malloc(9) -> kmem(9)

For struct timecounter, use C99 initializers.
Compile tested. No functional changes intended.

in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

add event counters for int0 at mainbus

switch sgimips to common bus_dma and bus_space in arch/mips/
Tested on O2 and Indy.
Things that are compile-tested only for lack of hardware:
- GIO ethernet cards with PCI bridges
- IP2x hardware not

switch sgimips to common bus_dma and bus_space in arch/mips/
Tested on O2 and Indy.
Things that are compile-tested only for lack of hardware:
- GIO ethernet cards with PCI bridges
- IP2x hardware not found on Indy
- IP1x

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actually get rid of actually unused variables, still works on my Indy
thanks mrg

sprinkle __unused()

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

#include <sys/bus.h> instead of <machine/bus.h>.

Set correct struct clockframe .intr value for hardclock(9).

Merge forward matt-nb5-mips64
Adapt to new interrupt/spl framework
Deal with arcbios calls being O32 and kernels being N32/N64.
Need to save/restore T8 across arcbios calls.

Merge from matt-nb5-mips64
Merge mips-specific arch files.

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits in arcemu
- Sprinkle MACH_SGI_IP6 as necessary
- Enable IP6/IP10 devices in GENERIC32_IP12. Yes, the naming is poor but
there's no winning with kernel/hw compatibility on sgimips...

Tested on my 4D/25. Doesn't (appear to) break macallan@'s IP22.

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KNF and misc cosmetics.

Remove all initialization of obsolete ci_divisor_recip in
mips struct cpu_info and related macroes.
The member was prepared for a hack in MD microtime(9) implementation
but it has been superseded by

Remove all initialization of obsolete ci_divisor_recip in
mips struct cpu_info and related macroes.
The member was prepared for a hack in MD microtime(9) implementation
but it has been superseded by MI timecounter(9).

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Fix typo in macro name and comments.

Change printing such that our 'timecounter:' message gets its own line on
IP12.

Move the mips1_clock_intr handling into int.c where it belongs.

Add i8254 timecounter support for use on IP12.

Now pings aren't 0.000 ms anymore.

Sprinkle static.

Remove the 'FIFO Full' hack for interrupt vector 0.

It is unclear that this interrupt fails to latch as int2_wait_fifo()
depends on it doing so and appears to work. Furthermore, we were previously
u

Remove the 'FIFO Full' hack for interrupt vector 0.

It is unclear that this interrupt fails to latch as int2_wait_fifo()
depends on it doing so and appears to work. Furthermore, we were previously
unconditionally unmasking the interrupt 0 vector, which led to more
'unexpected interrupt' messages on the console, rather than avoiding them.

Approved by sekiya@.

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merge ktrace-lwp.

TAB/space cleanup.

Fake a FIFO interrupt iff the FIFO interrupt is unmasked. Should eliminate
the "spurious interrupt" messages on machines without grtwo displays.

Add the following to the int driver:

* if the driver hasn't been properly initialized, spin for a bit in wait_fifo()
rather than try to access the local0 status register.
* allow interrupt sharing

Add the following to the int driver:

* if the driver hasn't been properly initialized, spin for a bit in wait_fifo()
rather than try to access the local0 status register.
* allow interrupt sharing (from Steve Rumble; necessary for IP20 glass TTY
support).

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