avoid using 'extern <func|data>;' inside a .c file, but instead
use header files and ensure definitions are not duplicated or
are technically (if not in codegen) wrong.

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

add an explicit "bool mpsafe" to intr_establish(). only set it to true
for the sun4m timer/counter interrupts. this gets lev10/14 working again
on SMP systems, where those interrupts started taking the kernel lock and
hanging...

Remove clause 3 and 4 from TNF licenses

branches: 1.17.2; 1.17.4;
Don't forget to initialize sc_dev.

Split device_t and softc for MI mk48txx(4) and intersil7170(4) clocks,
and other related misc cosmetics.

branches: 1.15.6;
Move todr_attach(9) calls from each MD attachment to MI intersil7170_attach().

branches: 1.14.28; 1.14.34; 1.14.42;
Reorganize MI intersil7170(4) TOD clock driver:
- make intersil7170_softc more generic and allocate it during autoconf(9)
rather than MALLOC(9) in attachment
- put todr_chip_handle_t, year0 value, and the century adjustment flag
into the intersil7170_softc
- change the attachment function to just take the softc like mk48txx(4)
- split sys/dev/ic/intersil7170.h into intersil7170reg.h and intersil7170var.h
- cleanup some macro

Untested on real sun4 machines, but no objection on port-sparc
(and port-sun3) in three days.

branches: 1.13.2; 1.13.4;
Convert both sparc and sparc64 to MI todr.

branches: 1.12.4; 1.12.8;
Drop trailing whitespace.

ANSIify. Same binary code is produced for GENERIC.MP + KGDB + DDB.

branches: 1.10.12; 1.10.18;
Avoid unnecessary stores of discarded values.

Revision 1.27 of clock.c applies to the Intersil interrupt, not sun4m timers.

branches: 1.8.2;
__KERNEL_RCSID()

branches: 1.7.2;
Move all `ID prom' stuff into the prom library.

intr_establish() signature change: pass NULL for the `fast trap' argument.

Pass the `device class interrupt level' on to intr_establish() and use to
raise the ipl in the interrupt handlers to the appropriate level. This avoids
interrupt handler interference if one of the devices actually interrupts at
a lower hardware level than the maximum level assined to a device class.

Based on code from Art Grabowski in openbsd.

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.1.2; 1.1.8;
Untangle clock.c:
* put various time-of-day clock, timer and eeprom drivers in separate files
* avoid unnecessary overhead in interrupt handlers
* make the MSIIEP timer attach through the regular autoconf mechanisms