fix various typos in word `interrupt', mainly in comments.

Return early if PM data is not available.

This avoids random crashes on my Powerbook when using the mouse or keyboard.

The same was needed for the Powerbook 5xx/Duos (compile tested only).

XXX pullup-10, pullup-9, pullup-8.

branches: 1.30.4;
fix some more typos in comments/log messages, improve wording as well.

branches: 1.29.34;
Remove unused variables

branches: 1.28.82; 1.28.92; 1.28.98;
Remove duplicate #includes, patch contributed in private mail
by Slava Semushin <slava.semushin@gmail.com>.

To verify that no nasty side effects of duplicate includes (or their
removal) have an effect here, I've compiled an i386/ALL kernel with
and without the patch, and the only difference in the resulting .o
files was in shifted line numbers in some assert() calls.
The comparison of the .o files was based on the output of "objdump -D".

Thanks to martin@ for the input on testing.

branches: 1.27.20;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

PR/31942: Hauke Fath: -current DEBUG kernel build fails because of gcc whining

branches: 1.24.2; 1.24.4;
Shadowing and const fixes.

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

__KERNEL_RCSID()

branches: 1.21.6;
Support internal ADB keyboard of PowerBook 190,190cs.
The keyboard works fine now. I don't confirm working internal
ADB track pad.

But an internal IDE drive is not recognized, and
an internal SCSI host controller(sbc driver) don't work yet.

Don't use multi-line string literals.

branches: 1.19.6;
Fix up a bug which PB150 shuts down when one boots up in progress.
PB150 will work with SCSI disk. But we cannot use an internal IDE
disk yet.

Reviewed by briggs

prepare for ELF:
- add "%" prefix to register names in assembly code.
- use _C_LABEL() where necessary.
- use packed structures where necessary to match the old ABI.

branches: 1.17.4;
Grammar improvements in comments.

Spell 'occurred' with two 'r's.

branches: 1.15.2; 1.15.4;
The Duo ADB controller doesn't notify us that it needs to be polled
through the (emulated) VIA. Work around this problem by polling the
Power Manager chip directly. From Daishi Kato, PR 9852.

Stabilize ADB support for some non-Apple ADB peripherals. This is the
second (and final) part of the fix for PR 10086. (There are no longer
any infinite-wait busy loops in the ADB driver!)

branches: 1.13.4;
Correct a pasto in pm_pmgrop_pm1(); while there were no negative side
effects, the place this code ended up couldn't have had any positive
effect, either.

Correct a few instances where we returned from a function that
had set splhigh() but returned without restoring the previous spl.
The PowerBook keyboard works better, now, but still starts to flake
out pretty badly at 70+ wpm.

Add and use macros to build ADB FLUSH, LISTEN, and TALK commands.

ite_polling -> adb_polling

branches: 1.9.2; 1.9.4; 1.9.8;
Unfortunately, several changes that are intermingled:
- Add initial IOP support. ADB doesn't work yet for me, but it's here so
that others will be encouraged to work on it. ADB_HW_IOP basically
is configured as a NOP so that serial consoles will continue to work.
- Roll via1_intr and via2_intr into the intr.c scheme--this also required
changing rtclock_intr to grovel the stack differently so that hardclock
gets the right arguments and softclock() doesn't get all reentrant.
- Make via1 interrupts parallel to via2 interrupts--handlers get a pass-
through pointer and we can register handlers. Register via1 interrupt
with intr_establish()--normally level 1, level 6 for A/UX scheme.
- Use intr_establish() to set real via2 interrupt handler instead of the
hacked function pointer.
- Reorganize adb-direct interrupts so that a function call is removed.
- Implement A/UX interrupts for all Quadras right now. We may need to
special case some Quadras, but Linux folks are reporting success on
several models.
- Fix intrnames to be accurate for the normal, PSC, and A/UX interrupt
configurations.

branches: 1.8.2; 1.8.4; 1.8.6;
Add the PowerBook 170 to what appears to be the correct
class of systems, based on the Apple dev notes for this system.

New ADB "bus" interface:
o Separate ms and kbd drivers
o aed device for compatibility
o debug message cleanup in hardware direct support (from scottr)

New framework for handling processor interrupts, derived in part from
the hp300 port.

- Interrupts 3-6 use this immediately. Interrupt 7 is a special case,
and the VIA interrupts (1 and 2) will be addressed when that code is
rototilled.

- Modify the zs front end to register with the appropriate interrupt
controller: through the PSC on the AV Quadras, and direct to
interrupt 4 on the rest. Arrange to have the appropriate zsc_softc
supplied to us at interrupt time.

- Modify the direct ADB driver (and its PowerManager cousin) to call
intr_dispatch(), rather than zshard(). XXX This is a kludge, but at
least limits the brokenness to the ADB drivers, now.

As a side effect, this should fix PR 5590. Thanks to Bill Studenmund for
correctly determining the cause of the problem reported there.

Better integration of Power Manager IC ADB driver into the direct ADB driver framework,
from Takashi Hamada. Also includes a handler for unsolicited ADB
packets.

Mostly KNF. There's still a bunch of ugly comments and some problems
with long lines, but this is at least a big step in the right direction.

Unify ADB options and place them all into opt_adb.h. Provide a knob to
enable ADB debugging messages if ADB_DEBUG is configured.

Make #include directives consistent. All MD headers are of the form:

#include <mac68k/{dev,mac68k}/foo.h>

branches: 1.1.4;
Power Manager interface/driver, written by Takashi Hamada.

Return early if PM data is not available.

This avoids random crashes on my Powerbook when using the mouse or keyboard.

The same was needed for the Powerbook 5xx/Duos (compile tested only).

XXX pullup-10, pullup-9, pullup-8.

fix some more typos in comments/log messages, improve wording as well.

Remove unused variables

branches: 1.28.82; 1.28.92; 1.28.98;
Remove duplicate #includes, patch contributed in private mail
by Slava Semushin <slava.semushin@gmail.com>.

To verify that no nasty side effects of duplicate includes (or their
removal) have an effect here, I've compiled an i386/ALL kernel with
and without the patch, and the only difference in the resulting .o
files was in shifted line numbers in some assert() calls.
The comparison of the .o files was based on the output of "objdump -D".

Thanks to martin@ for the input on testing.

branches: 1.27.20;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

PR/31942: Hauke Fath: -current DEBUG kernel build fails because of gcc whining

branches: 1.24.2; 1.24.4;
Shadowing and const fixes.

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

__KERNEL_RCSID()

branches: 1.21.6;
Support internal ADB keyboard of PowerBook 190,190cs.
The keyboard works fine now. I don't confirm working internal
ADB track pad.

But an internal IDE drive is not recognized, and
an internal SCSI host controller(sbc driver) don't work yet.

Don't use multi-line string literals.

branches: 1.19.6;
Fix up a bug which PB150 shuts down when one boots up in progress.
PB150 will work with SCSI disk. But we cannot use an internal IDE
disk yet.

Reviewed by briggs

prepare for ELF:
- add "%" prefix to register names in assembly code.
- use _C_LABEL() where necessary.
- use packed structures where necessary to match the old ABI.

branches: 1.17.4;
Grammar improvements in comments.

Spell 'occurred' with two 'r's.

branches: 1.15.2; 1.15.4;
The Duo ADB controller doesn't notify us that it needs to be polled
through the (emulated) VIA. Work around this problem by polling the
Power Manager chip directly. From Daishi Kato, PR 9852.

Stabilize ADB support for some non-Apple ADB peripherals. This is the
second (and final) part of the fix for PR 10086. (There are no longer
any infinite-wait busy loops in the ADB driver!)

branches: 1.13.4;
Correct a pasto in pm_pmgrop_pm1(); while there were no negative side
effects, the place this code ended up couldn't have had any positive
effect, either.

Correct a few instances where we returned from a function that
had set splhigh() but returned without restoring the previous spl.
The PowerBook keyboard works better, now, but still starts to flake
out pretty badly at 70+ wpm.

Add and use macros to build ADB FLUSH, LISTEN, and TALK commands.

ite_polling -> adb_polling

branches: 1.9.2; 1.9.4; 1.9.8;
Unfortunately, several changes that are intermingled:
- Add initial IOP support. ADB doesn't work yet for me, but it's here so
that others will be encouraged to work on it. ADB_HW_IOP basically
is configured as a NOP so that serial consoles will continue to work.
- Roll via1_intr and via2_intr into the intr.c scheme--this also required
changing rtclock_intr to grovel the stack differently so that hardclock
gets the right arguments and softclock() doesn't get all reentrant.
- Make via1 interrupts parallel to via2 interrupts--handlers get a pass-
through pointer and we can register handlers. Register via1 interrupt
with intr_establish()--normally level 1, level 6 for A/UX scheme.
- Use intr_establish() to set real via2 interrupt handler instead of the
hacked function pointer.
- Reorganize adb-direct interrupts so that a function call is removed.
- Implement A/UX interrupts for all Quadras right now. We may need to
special case some Quadras, but Linux folks are reporting success on
several models.
- Fix intrnames to be accurate for the normal, PSC, and A/UX interrupt
configurations.

branches: 1.8.2; 1.8.4; 1.8.6;
Add the PowerBook 170 to what appears to be the correct
class of systems, based on the Apple dev notes for this system.

New ADB "bus" interface:
o Separate ms and kbd drivers
o aed device for compatibility
o debug message cleanup in hardware direct support (from scottr)

New framework for handling processor interrupts, derived in part from
the hp300 port.

- Interrupts 3-6 use this immediately. Interrupt 7 is a special case,
and the VIA interrupts (1 and 2) will be addressed when that code is
rototilled.

- Modify the zs front end to register with the appropriate interrupt
controller: through the PSC on the AV Quadras, and direct to
interrupt 4 on the rest. Arrange to have the appropriate zsc_softc
supplied to us at interrupt time.

- Modify the direct ADB driver (and its PowerManager cousin) to call
intr_dispatch(), rather than zshard(). XXX This is a kludge, but at
least limits the brokenness to the ADB drivers, now.

As a side effect, this should fix PR 5590. Thanks to Bill Studenmund for
correctly determining the cause of the problem reported there.

Better integration of Power Manager IC ADB driver into the direct ADB driver framework,
from Takashi Hamada. Also includes a handler for unsolicited ADB
packets.

Mostly KNF. There's still a bunch of ugly comments and some problems
with long lines, but this is at least a big step in the right direction.

Unify ADB options and place them all into opt_adb.h. Provide a knob to
enable ADB debugging messages if ADB_DEBUG is configured.

Make #include directives consistent. All MD headers are of the form:

#include <mac68k/{dev,mac68k}/foo.h>

branches: 1.1.4;
Power Manager interface/driver, written by Takashi Hamada.