Merge thorpej-cfargs2.

branches: 1.61.8;
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: 1.60.34;
- Use aprint*() more in xxx_attach().
- Add missing aprint_naive("\n").
- Remove extra spaces and tabs.
- KNF.

KNF. No functional change.

branches: 1.58.14;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.57.12; 1.57.22;
struct device * -> device_t, no functional changes intended.

struct cfdata * -> cfdata_t, no functional changes intended.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.54.4; 1.54.12; 1.54.18;
use aprint_*_dev and device_xname

branches: 1.53.16;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.52.8; 1.52.22; 1.52.24; 1.52.28;
__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.50.20; 1.50.22;
merge ktrace-lwp.

branches: 1.49.6;
de-__P

branches: 1.48.4; 1.48.6;
Separate the namespace for default (ie unspecified) locators used
by the isa.c bus driver and the "address/whatever not specified"
argument passed to leaf device drivers.
The former is "ISACF_XXX_DEFAULT" as generaterd by config(8), the latter
"ISA_UNKNOWN_XXX", defined in isavar.h.
This way we save a dependency of every ISA device driver on "locators.h".

replace 7 identical instances if cfprint functions by a single one

branches: 1.46.2;
Use aprint_normal() in cfprint routines.

Fix sizeof and whitespace bug from the script I'm using to do the
CFATTACH_DECL conversion. (Grumble.)

Use CFATTACH_DECL().

Declare all cfattach structures const.

Overhaul of the ISA autoconfiguration code to support direct
configuration of devices logically attached to the ISA bus:

* Change the isa_attach_args to have arrays of io, mem, irq, drq
resources.
* Add a "pnpnames" and a linked list of "pnpcompatnames" to the
isa_attach_args. If either of these members are non-NULL,
direct configuration of the bus is being performed. Add an
ISA_DIRECT_CONFIG() macro to test for this.
* Drivers are not allowed to modify the isa_attach_args unless
direct configuration is not being performed and the probe fucntion
is returning success.
* Adapt device drivers -- currently, all driver probe routines return
"no match" if ISA_DIRECT_CONFIG() evaluates to true.

add RCSID

branches: 1.40.24; 1.40.26;
Make these files compile again; no longer necessary to pass
iobase to comprobe1.

Make copyright notices with my name consistent.

Nuke __BROKEN_INDIRECT_CONFIG.

make it compile without BROKEN_INDIRECT_CONFIG

Update for config changes.

Don't panic if we fail to remap i/o or mem space in the attach function.
Instead, print a diagnostic and return. (Some drivers do this already.)

Also, normalize the diagnostic message, and fix some places where the
printfs were getting ugly.

Make sure the i/o and/or mem addresses aren't wildcarded (i.e. -1) before
using the address in a bus_space_map() call.

Adjust for the new "com" driver home.

Make console on multiport cards more likely to work (obvious bug,
fix still untested).
Closes PR kern/4095 by enami tsugutomo.

Use the new com_is_console() to decide if the port is already initialized.
XXX shouldn't the attach() use the existing handle if present???

Bring back the "comconsattached" flag. It is necessary for starred
com devices (on non "__BROKEN_INDIRECT_CONFIG" ISA).

fix multi-port serial drivers to reflect recent changes to com driver for console/kgdb

branches: 1.28.4;
Update for new com driver.

New bus.h implementation/interface:
- No more distinction between i/o-mapped and memory-mapped
devices. It's all "bus space" now, and space tags
differentiate the space with finer grain than the
bus chipset tag.
- Add memory barrier methods.
- Implement space alloc/free methods.
- Implement region read/write methods (like memcpy to/from
bus space).
This interface provides a better abstraction for dealing with
machine-independent chipset drivers.

backout kprintf changes

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).

Use intr.h.

Make those compile again; they were missing a declaration for bc.
Also fix prototypes.

include <sys/termios.h> to make comvar.h happy

update for addition of a machine-dependent cookie as the first argument
to isa_intr_{,dis}establish().

remove tricky open-coded variants of config_found(), by using the
child device pointer now returned by config_found(). (previously,
the code played games to get that pointer; now they are unnecesary.)

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.

convert these to use new <machine/bus.h> interfaces. This involved
substantial reworking of the multi-port drivers, as they need to frob
bits in the io-port spaces of their children. As a result, the
commulti->com attachment interface is substantially more complex.
(This may be fixable in the future by making some of the code common,
but as long as io-port allocation checking is planned, it's necessary.)

Include comvar.h, for comprobe1() prototype and for commulti_attach_args.
Remove multiple identical definitions for the arg struct used by multiport
boards' to attach slave com ports.

minor cleanup. mostly: use COM_NPORTS and a new (driver-specific) NSLAVES
macro where appropriate. No point in hard-coding numbers in multiple places.
At the very least, this makes the drivers slightly easier to diff/understand.

The IST_* and IPL_* constants are not bus-specific; don't treat them as such.
Change splimp -> splnet in Ethernet, ARCnet, and FDDI drivers.

if subdevices specified with wildcarded unit number, config_attach()
can change the cf_unit, so save it before attach and use saved value.

clean up several ISA device interfaces: autoconfiguration, header
inclusion, and interrupt configuration. more work still needs to be done,
but it's getting better...

Fix oversight in previous.

\
These files have been 99% rewritten from the original ast driver. Add an
appropriate copyright notice.

Add interrupt sharing types.

Use direct config for subdevices.

Stylistic changes.

Convert port, IRQ, and DRQ numbers to ints.

Update for new autoconfig.

No longer needs icu.h.

Change all of the uses of IRQ{0-15} and bit masks to use plain numbers
rather than bit shifting.

new RCS ID format.

Add multiplexer for RT 4-port serial cards.