Merge thorpej-cfargs2.

branches: 1.5.8;
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: 1.4.68;
Do the bus.h -> bus_{defs,funcs}.h split and change all occurrences of
<machine/bus.h> to <sys/bus.h>.

struct device * -> device_t
struct cfdata * -> cfdata_t
use device accessors, use device_private.
some softc/device_t splits (macppc needs a bunch more)
aprint*_dev used considerably more

branches: 1.2.32;
Remove clause 3 and 4 from TNF licenses

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.14; 1.1.16; 1.1.18;
Import the rs6000 port into the tree.

This port of NetBSD is intended to run on MCA-based IBM RS/6000
machines. The port so far has only been tested on a 7006-41T, which is a
601-based RS/6000. The port also contains a limited set of code for the
7012-3XX machines, but support for those is a long way off still.

The port builds and generates a working kernel, however, it still lacks
bus_dma code for the MCA bus, so at present, only the com ports work,
though any other device (such as the printer/keyboard) located on the
ioplanar could probably be made to work. Work will continue on this port
as I iron out the DMA code.

This port was made possible by a generous gonation of hardware by Kevin
Bowling, who also provided much of the documentation for the port.

rs6000: mca_machdep: Locally neglect GCC12 -Warray-bounds for 0-th page

as already done for, e.g., evbppc/wii.

branches: 1.5.24;
malloc(9) -> kmem(9)

branches: 1.4.66;
Do the bus.h -> bus_{defs,funcs}.h split and change all occurrences of
<machine/bus.h> to <sys/bus.h>.

struct device * -> device_t
struct cfdata * -> cfdata_t
use device accessors, use device_private.
some softc/device_t splits (macppc needs a bunch more)
aprint*_dev used considerably more

branches: 1.2.32;
Remove clause 3 and 4 from TNF licenses

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.14; 1.1.16; 1.1.18;
Import the rs6000 port into the tree.

This port of NetBSD is intended to run on MCA-based IBM RS/6000
machines. The port so far has only been tested on a 7006-41T, which is a
601-based RS/6000. The port also contains a limited set of code for the
7012-3XX machines, but support for those is a long way off still.

The port builds and generates a working kernel, however, it still lacks
bus_dma code for the MCA bus, so at present, only the com ports work,
though any other device (such as the printer/keyboard) located on the
ioplanar could probably be made to work. Work will continue on this port
as I iron out the DMA code.

This port was made possible by a generous gonation of hardware by Kevin
Bowling, who also provided much of the documentation for the port.

malloc(9) -> kmem(9)

branches: 1.3.66;
Do the bus.h -> bus_{defs,funcs}.h split and change all occurrences of
<machine/bus.h> to <sys/bus.h>.

Remove clause 3 and 4 from TNF licenses

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8; 1.1.14; 1.1.16; 1.1.18;
Import the rs6000 port into the tree.

This port of NetBSD is intended to run on MCA-based IBM RS/6000
machines. The port so far has only been tested on a 7006-41T, which is a
601-based RS/6000. The port also contains a limited set of code for the
7012-3XX machines, but support for those is a long way off still.

The port builds and generates a working kernel, however, it still lacks
bus_dma code for the MCA bus, so at present, only the com ports work,
though any other device (such as the printer/keyboard) located on the
ioplanar could probably be made to work. Work will continue on this port
as I iron out the DMA code.

This port was made possible by a generous gonation of hardware by Kevin
Bowling, who also provided much of the documentation for the port.