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History log of /src/sys/arch/mac68k/include
RevisionDateAuthorComments
 1.26 30-Nov-2024  christos Create a new header lwp_private.h to contain _lwp_getprivate_fast,
_lwp_gettcb_fast, _lwp_settcb and remove them from mcontext.h, so that:
1. we don't need special hacks to hide them
2. we can include <lwp.h> where needed to get the necessary prototypes
without redefining them locally.
 1.25 12-Jul-2018  maxv branches: 1.25.36;
Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.
 1.24 24-Dec-2015  christos branches: 1.24.16; 1.24.18;
fenv for m68k
 1.23 17-Jul-2011  joerg branches: 1.23.12; 1.23.30;
Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.
 1.22 09-Feb-2007  ad Merge newlock2 to head.
 1.21 26-Jul-2006  drochner branches: 1.21.4;
don't install <machine/db_machdep.h>, this is kernel only
 1.20 11-Dec-2005  christos branches: 1.20.4; 1.20.8;
merge ktrace-lwp.
 1.19 08-May-2004  kleink branches: 1.19.12;
Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.
 1.18 17-Jan-2003  thorpej branches: 1.18.2;
Merge the nathanw_sa branch.
 1.17 26-Nov-2002  lukem Remove KDIR=, since SYS_INCLUDE=symlinks and KDIR are not supported any more.
 1.16 07-Aug-2002  briggs Implement pmc(9) -- An interface to hardware performance monitoring
counters. These counters do not exist on all CPUs, but where they
do exist, can be used for counting events such as dcache misses that
would otherwise be difficult or impossible to instrument by code
inspection or hardware simulation.

pmc(9) is meant to be a general interface. Initially, the Intel XScale
counters are the only ones supported.
 1.15 28-Nov-2001  kleink branches: 1.15.8;
No point in installing svr4_machdep.h.
 1.14 06-May-2001  kleink branches: 1.14.2; 1.14.8;
Cosmetical oversight.
 1.13 15-Apr-2001  kleink Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.12 15-Apr-2001  kleink Add definitions of C99 specified-width integer type limits.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.11 14-Apr-2001  kleink Add definitions of C99 integer constant macros.
Tidy Makefiles up a little.
 1.10 14-Apr-2001  kleink Add definitions of C99 minimum-width and greatest-width integer types.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.9 26-Jun-2000  kleink branches: 1.9.2;
Add <machine/int_types.h>, which provides namespace-pure definitions
of exact-width integer types.
 1.8 29-Apr-2000  thorpej Require that each each MACHINE/MACHINE_ARCH supply a lock.h. This file
contains the values __SIMPLELOCK_LOCKED and __SIMPLELOCK_UNLOCKED, which
replace the old SIMPLELOCK_LOCKED and SIMPLELOCK_UNLOCKED. These files
are also required to supply inline functions __cpu_simple_lock(),
__cpu_simple_lock_try(), and __cpu_simple_unlock() if locking is to be
supported on that platform (i.e. if MULTIPROCESSOR is defined in the
_KERNEL case). Change these functions to take an int * (&alp->lock_data)
rather than the struct simplelock * itself.

These changes make it possible for userland to use the locking primitives
by including <machine/lock.h>.
 1.7 17-Mar-2000  tron Install "machineendian_machdep.h".
 1.6 23-Dec-1999  kleink C99: Define a NAN macro in <math.h> which evaulates to a constant expression of
a single-precision quiet NaN; only to be defined on platforms that do support
this value.
 1.5 19-Apr-1999  kleink branches: 1.5.2;
Add COMPAT_SVR4 for m68k.
 1.4 15-Mar-1999  minoura branches: 1.4.4;
Pullin m68k/ieee.h.
 1.3 15-Jan-1999  bouyer branches: 1.3.2;
Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.
 1.2 12-Jul-1998  veego Add elf_machdep.h to the INCS list.
 1.1 12-Jun-1998  cgd Rework the way kernel include files are installed. In the new method,
as with user-land programs, include files are installed by each directory
in the tree that has includes to install. (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change. Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.
 1.3.2.2 13-Feb-2000  scottr Sync with main branch.
 1.3.2.1 16-May-1999  scottr Sync with main branch.
 1.4.4.1 21-Jun-1999  thorpej Sync w/ -current.
 1.5.2.2 21-Apr-2001  bouyer Sync with HEAD
 1.5.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.9.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.14.8.5 11-Dec-2002  thorpej Sync with HEAD.
 1.14.8.4 13-Aug-2002  nathanw Catch up to -current.
 1.14.8.3 08-Jan-2002  nathanw Catch up to -current.
 1.14.8.2 10-Nov-2001  scw Kernel mcontext glue for Scheduler Activations on m68k from
Klaus Klein <kleink@netbsd.org>.
 1.14.8.1 06-May-2001  scw file Makefile was added on branch nathanw_sa on 2001-11-10 21:22:51 +0000
 1.14.2.2 06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.14.2.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.15.8.1 31-Aug-2002  gehenna catch up with -current.
 1.18.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.18.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.18.2.1 03-Aug-2004  skrll Sync with HEAD
 1.19.12.2 26-Feb-2007  yamt sync with head.
 1.19.12.1 30-Dec-2006  yamt sync with head.
 1.20.8.1 11-Aug-2006  yamt sync with head
 1.20.4.1 09-Sep-2006  rpaulo sync with head
 1.21.4.1 01-Feb-2007  ad Header file cleanup.
 1.23.30.1 27-Dec-2015  skrll Sync with HEAD (as of 26th Dec)
 1.23.12.1 03-Dec-2017  jdolecek update from HEAD
 1.24.18.1 10-Jun-2019  christos Sync with HEAD
 1.24.16.1 28-Jul-2018  pgoyette Sync with HEAD
 1.25.36.1 02-Aug-2025  perseant Sync with HEAD
 1.13 14-Feb-2000  scottr Merge wscons work onto the main development branch.
 1.12 23-Oct-1998  ender branches: 1.12.6; 1.12.14;
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)
 1.11 11-Aug-1998  briggs Patch from Takashi NAKAMURA <QZM00427@nifty.ne.jp> to support the
Contour 3-button mouse from the Contour Design Corp.
It looks like a Microspeed mouse.
 1.10 05-Nov-1997  ender Recognize Apple Standard Keyboard (ISO layout)
 1.9 02-Oct-1997  briggs branches: 1.9.2;
port-mac68k/4158: current kernel doesn't recognize some adb devices.
Patch applied. Thanks to SUNAGAWA Keiki for the change-request.
 1.8 09-Aug-1997  ender o Fixed definition of PowerBook extended keyboard from previous commit
o Added recognition of some additional ADB device types
 1.7 08-Aug-1997  ender Add recognition of more keyboard types (including ISO layouts)
 1.6 16-Jun-1997  scottr branches: 1.6.4;
Add support for Mouse Systems A3 mouse. From Colin Wood.
 1.5 05-May-1996  briggs MicroSpeed mouse support from Taras Ivanenko <ivanenko@ctpa03.mit.edu>.
Also some updates to actually used #defined constants instead of numeric
constants.
 1.4 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.3 03-Dec-1994  briggs Mac ROM Glue changes from grantham@tenon.com.
 1.2 26-Oct-1994  cgd new RCS ID format.
 1.1 30-Jul-1994  lkestel branches: 1.1.2;
Moved adbsys.h grfioctl.h and keyboard.h to include to make desktop
and X compile more cleanly.
 1.1.2.2 30-Jul-1994  lkestel Moved adbsys.h grfioctl.h and keyboard.h to include to make desktop
and X compile more cleanly.
 1.1.2.1 30-Jul-1994  lkestel file adbsys.h was added on branch netbsd-1-0 on 1994-07-30 04:21:59 +0000
 1.6.4.2 14-Oct-1997  thorpej Update marc-pcmcia branch from trunk.
 1.6.4.1 23-Aug-1997  thorpej Update marc-pcmcia branch from trunk.
 1.9.2.1 07-Nov-1997  mellon Pull rev 1.10 up from trunk (ender)
 1.12.14.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.12.6.1 05-Mar-1999  scottr checkpoint: input side code should work. no output side yet.
 1.4 26-Oct-1994  cgd new RCS ID format.
 1.3 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.10 08-Oct-1996  cgd repoint at shared aout_machdep.h, not exec.h
 1.9 08-Sep-1996  thorpej Use <m68k/exec.h>.
 1.8 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.7 26-Oct-1994  cgd new RCS ID format.
 1.6 06-Dec-1993  briggs Move MID_MACHINE to param.h from exec.h and get rid of bogus includes.
 1.5 03-Dec-1993  briggs Added struct relocation_info_mac68k. Copied from hp300.
 1.4 02-Dec-1993  briggs Update MACHINE to mac68k in param.h.
Update MACHINE_MID to MID_M68K -- untested.
Add __LDPGSZ as 8192 -- untested.
 1.3 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.2 18-Oct-1993  pk Put definition of __LDPGSZ and `struct relocation_info' where they belong:
in <machine/exec.h>.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.2 26-Oct-1994  cgd new RCS ID format.
 1.1 23-Jan-1994  cgd stub
 1.13 16-Jun-2017  jdolecek dumpconf(void) long doesn't exist, remove the prototype

PR kern/39714 by Henning Petersen
 1.12 04-Mar-2007  christos branches: 1.12.88; 1.12.108;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.11 20-Nov-2006  hauke branches: 1.11.4;
Add Timecounter support for mac68k, using the otherwise idle second
timer of VIA1. Passes regression/sys/kern/time regression test.

While we are here, GC leftover prototypes from MI todr integration,
and clean up clockreg.h in the light of "Guide to the Macintosh
Hardware" information.

(Reviewed and okayed by Martin Husemann)
 1.10 11-Dec-2005  christos branches: 1.10.20; 1.10.22;
merge ktrace-lwp.
 1.9 15-Jan-2005  chs branches: 1.9.10;
de-__P, remove register, ansify, b* -> mem*.
 1.8 10-Apr-2002  briggs branches: 1.8.10;
Use m68k/m68k/cacheops.[ch]
Use m68k/m68k/bus_dma.c
- Add mainbus_attach_args with bus_space_tag_t and bus_dma_tag_t.
- Use passed-in tags for nubus scan.
 1.7 22-Dec-1998  scottr branches: 1.7.24; 1.7.28;
vm_offset_t -> {paddr_t, vaddr_t}
 1.6 06-Oct-1998  thorpej configure() prototype is in <sys/device.h>
 1.5 17-Dec-1996  scottr Revamp mainbus and obio autoconfiguration, with some direction (and the
indirect bus code framework) from Jason Thorpe. This allows us to dump
bus_scan() and bus_print(), and move bus_peek() and bus_mapin() to the
NuBus code (since they'll eventually go away, anyway).
 1.4 16-Dec-1996  scottr Convert all foo_match() functions to use a `struct cfdata *' for their
second argument. The NuBus autoconfig code had to be reorganized as a
result of this, and looks much more like a directly-attached bus now.
These changes eliminate __BROKEN_INDIRECT_CONFIG.
 1.3 14-Sep-1996  scottr Update prototypes to match Chris' cfprint_t change. Also, update comments
in autoconf.h to reflect the mainbus.c split.
 1.2 18-May-1996  briggs Fixup a few prototypes and put 'em in their place.
 1.1 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.7.28.1 17-Apr-2002  nathanw Catch up to -current.
 1.7.24.1 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.8.10.1 17-Jan-2005  skrll Sync with HEAD.
 1.9.10.2 03-Sep-2007  yamt sync with head.
 1.9.10.1 30-Dec-2006  yamt sync with head.
 1.10.22.1 10-Dec-2006  yamt sync with head.
 1.10.20.1 12-Jan-2007  ad Sync with head.
 1.11.4.1 12-Mar-2007  rmind Sync with HEAD.
 1.12.108.1 28-Aug-2017  skrll Sync with HEAD
 1.12.88.1 03-Dec-2017  jdolecek update from HEAD
 1.2 21-Aug-1999  simonb Include <sys/bswap.h> for function prototypes. i386, pc532 and vax
still include <machine/byte_swap.h> and define macros for some of
the bswap*() functions.
 1.1 15-Jan-1999  bouyer branches: 1.1.2;
Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.
 1.1.2.1 01-Nov-1999  scottr Sync with main branch.
 1.30 23-Jan-2021  christos Remove cargo-culted '#if 0' code that was designed to produce a
compile-time error if any of the bus_space_*_8 functions was used,
but was documented that it produces a link-time error.
 1.29 02-Apr-2020  msaitoh branches: 1.29.4;
s/impliment/implement/ in comment.
 1.28 23-Sep-2019  skrll Provide PRIxBUSADDR, PRIxBUSSIZE, PRIuBUSSIZE, and PRIxBSH for all arches
to follow arm and (generic) mips.

Reviewed by christos.
 1.27 23-Jul-2019  rin PR port-mac68k/24883

Style-only changes in preparation to import AV DMA code:

- G/C unused from esp_softc
- clean up headers:
- prefer <sys/bus.h> over <machine/bus.h>
- G/C unused
- sort
- staticify private functions and variables
- stop using inline qualifier for functions called via function pointers
- use C99 initializer
- provide bus_space_vaddr(9) and use it, instead of using member of
bus_handle_t directly
- use uint*_t:
- u_char --> uint8_t
- u_int*_t --> uint*_t
- use proper names from ncr53c9xreg.h instead of magic numbers
- and some KNF, and etc.

No functional changes intended.
 1.26 28-Apr-2008  martin branches: 1.26.88;
Remove clause 3 and 4 from TNF licenses
 1.25 09-Sep-2006  tsutsui branches: 1.25.54; 1.25.56; 1.25.58;
Apply patch in PR port-mac68k/33636 from Dave Huang (with wrapping long lines).
i.e. args in macro should be wrapped with parentheses.
 1.24 16-Feb-2006  perry branches: 1.24.2; 1.24.12; 1.24.14;
Change "inline" back to "__inline" in .h files -- C99 is still too
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.
 1.23 24-Dec-2005  perry branches: 1.23.2; 1.23.4; 1.23.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.
 1.22 11-Dec-2005  christos merge ktrace-lwp.
 1.21 15-Jan-2005  chs branches: 1.21.8; 1.21.10;
de-__P, remove register, ansify, b* -> mem*.
 1.20 10-Apr-2002  briggs branches: 1.20.10; 1.20.16;
Use m68k/m68k/cacheops.[ch]
Use m68k/m68k/bus_dma.c
- Add mainbus_attach_args with bus_space_tag_t and bus_dma_tag_t.
- Use passed-in tags for nubus scan.
 1.19 09-Apr-2002  briggs Constify bus_space_write_multi_N() and bus_space_write_region_N().
Addresses PR port-mac68k/16233.
 1.18 14-Sep-2001  briggs branches: 1.18.4;
Define __BUS_SPACE_HAS_STREAM_METHODS since the functions are there. Noted
on tech-kern & port-mac68k by "John Ruschmeyer" <jruschme@mac.com>.
 1.17 31-Jul-2000  briggs branches: 1.17.2; 1.17.4;
Add bus_space_*_stream_N functions.
 1.16 31-Jul-2000  briggs Add a DIAGNOSTIC panic if (count-using) bus_space macros are called with
a count of zero. Some drivers do this accidentally and some bus_space
implementations will fail if count is passed as zero (they are set up in
a do-{}-while structure).
 1.15 30-Jul-2000  briggs Make sure that bus_space read/write functions that take a count will not be
called if count is zero. The smc91cxx driver, for example, may try to call
bus_space_write_multi_2() with a count of 0.
 1.14 30-Jul-2000  briggs Add byte-swap and stride options to bus_space. Allocate as normal, then
call mac68k_bus_space_handle_swapped() or mac68k_bus_space_handle_set_stride().
Stride is untested. Swapped code works for SMC ethernet.
 1.13 25-Jan-2000  drochner branches: 1.13.4;
define a "BUS_SPACE_MAP_PREFETCHABLE" flag which basically means that
device accesses are idempotent (but should not be cached by the CPU)
 1.12 23-Mar-1999  drochner branches: 1.12.8;
Add a macro to check for sufficient pointer alignment in bus.h context,
"BUS_SPACE_ALIGNED_POINTER()".
Equal to the param.h "ALIGNED_POINTER()" normally, but obeys additional
requirements of the bus_space_xxx_n() macros. (BUS_SPACE_DEBUG)
 1.11 06-Jan-1999  briggs branches: 1.11.2;
Fix PR port-mac68k/6665 from Paul Goyette with some minor mods.
Cast values is bus_space macros to the appropriate types so we end up
with valid assembly.
 1.10 16-Aug-1998  scottr Remove semicolons from the end of bus_space_*_multi_*(). From Ken Nakata
in PR 5965.
 1.9 13-Jan-1998  scottr Conform to spec, and make bus_space_copy() handle overlapping copies.
From Jason Thorpe.
 1.8 10-Oct-1997  scottr Remove advertising clause.
 1.7 04-Oct-1997  thorpej Copyright assigned to The NetBSD Foundation.
 1.6 24-Feb-1997  scottr branches: 1.6.4;
The bus space tag really isn't used; stop the compiler from complaining.
 1.5 22-Feb-1997  scottr Remove niggles that made it into the copyright, and correct the
license terms (added Jason Thorpe).
 1.4 20-Feb-1997  scottr Implement bus_space_set_multi_N(), bus_space_set_region_N(), and
bus_space_copy_N(). Bus space support is now complete.
 1.3 14-Feb-1997  scottr Add prototypes for bus_space_alloc() and bus_space_free()
 1.2 11-Feb-1997  scottr Initialize and use extent manager for bus space mapping functions.
Tweak bus_space_{tag,handle}_t types slightly to facilitate this.
 1.1 03-Feb-1997  scottr branches: 1.1.2;
Implement basic bus space access macros/functions.

Note: we currently do not use the extent manager.
 1.1.2.1 12-Mar-1997  is Merge in changes from The Trunk, partially just reimplementing newarp.
 1.6.4.1 14-Oct-1997  thorpej Update marc-pcmcia branch from trunk.
 1.11.2.2 13-Feb-2000  scottr Sync with main branch.
 1.11.2.1 16-May-1999  scottr Sync with main branch.
 1.12.8.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.13.4.2 08-Oct-2001  he Pull up revision 1.18 (requested by briggs):
Define __BUS_SPACE_HAS_STREAM_METHODS since that fits what we
have.
 1.13.4.1 06-Aug-2000  briggs Pullups approved by thorpej --
Add byte-swap and stride options to bus_space. Allocate as normal, then
call mac68k_bus_space_handle_swapped() or mac68k_bus_space_handle_set_stride().
Stride is untested. Swapped code works for SMC ethernet.

Add bus_space_*_stream_N functions to bus_space.

Add a DIAGNOSTIC panic if (count-using) bus_space macros are called with
a count of zero. Some drivers do this accidentally and some bus_space
implementations will fail if count is passed as zero (they are set up in
a do-{}-while structure).

There were some bogus assumptions about bus_space_handle_t and some
function calls that didn't match prototypes--fix those here, too.
 1.17.4.2 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.17.4.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.17.2.1 01-Oct-2001  fvdl Catch up with -current.
 1.18.4.2 17-Apr-2002  nathanw Catch up to -current.
 1.18.4.1 14-Sep-2001  nathanw file bus.h was added on branch nathanw_sa on 2002-04-17 00:03:33 +0000
 1.20.16.1 12-Sep-2006  tron Pull up following revision(s) (requested by tsutsui in ticket #10692):
sys/arch/mac68k/include/bus.h: revision 1.25
Apply patch in PR port-mac68k/33636 from Dave Huang (with wrapping long lines).
i.e. args in macro should be wrapped with parentheses.
 1.20.10.1 17-Jan-2005  skrll Sync with HEAD.
 1.21.10.1 30-Dec-2006  yamt sync with head.
 1.21.8.1 16-Sep-2006  ghen Pull up following revision(s) (requested by tsutsui in ticket #1512):
sys/arch/mac68k/include/bus.h: revision 1.25
sys/arch/mac68k/dev/if_ae.c: revision 1.78
Apply patch from Scott Reynolds in PR port-mac68k/32583
with some tweaks (add a comment and macro):
Handle odd byte case correctly in (ETHER_MIN_LEN-ETHER_CRC_LEN) padding
so that bus_space_set_region_2() won't be called with count==0.
Apply patch in PR port-mac68k/33636 from Dave Huang (with wrapping long lines).
i.e. args in macro should be wrapped with parentheses.
 1.23.6.1 22-Apr-2006  simonb Sync with head.
 1.23.4.1 09-Sep-2006  rpaulo sync with head
 1.23.2.1 18-Feb-2006  yamt sync with head.
 1.24.14.1 18-Nov-2006  ad Sync with head.
 1.24.12.1 14-Sep-2006  riz Pull up following revision(s) (requested by tsutsui in ticket #154):
sys/arch/mac68k/include/bus.h: revision 1.25
sys/arch/mac68k/dev/if_ae.c: revision 1.78
Apply patch from Scott Reynolds in PR port-mac68k/32583
with some tweaks (add a comment and macro):
Handle odd byte case correctly in (ETHER_MIN_LEN-ETHER_CRC_LEN) padding
so that bus_space_set_region_2() won't be called with count==0.
Apply patch in PR port-mac68k/33636 from Dave Huang (with wrapping long lines).
i.e. args in macro should be wrapped with parentheses.
 1.24.2.1 14-Sep-2006  yamt sync with head.
 1.25.58.1 16-May-2008  yamt sync with head.
 1.25.56.1 18-May-2008  yamt sync with head.
 1.25.54.1 02-Jun-2008  mjf Sync with HEAD.
 1.26.88.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.26.88.1 08-Apr-2020  martin Merge changes from current as of 20200406
 1.29.4.1 03-Apr-2021  thorpej Sync with HEAD.
 1.2 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.1 19-Jan-1995  jtc This file, which will be included by <sys/cdefs.h>, will contain macros
such as __warn_references() and __weak_reference() which are actually
machine dependant. This will make it easier for ports that are being
bootstraped with ELF and ECOFF based toolchains.

This change also introduces a new macro, _C_LABEL(x). _C_LABEL expands
its argument, an identifier, to a character string of the identifier
name as it is represented in an object file.

For most ports, _C_LABEL(x) will expand to "_x", for ELF based ports
_C_LABEL(x) will expand to "x".
 1.107 28-Feb-2024  thorpej Fix up the mac68k interrupt handlers to work with the new style common
clockframe layout and remove the CLOCK_FORMAT0 work-around. As a nice
side-effect, this also eliminates the super-sketchy stack unwinding used
by rtclock_intr to get at the interrupt stack frame.
 1.106 27-Feb-2024  nat Use proper clockframe size for those platforms that require it.

XXX This is a tempory measure, better to fix clock interrupts to take the
common clockframe size.

OK thorpej@.
 1.105 20-Jan-2024  thorpej Largely unify the <machine/cpu.h> headers on the m68k platforms.
 1.104 18-Jan-2024  thorpej Make the M68K_MMU_* defines real kernel options, available in opt_m68k_arch.h.
For 68030, 68040, and 68060, infer M68K_MMU_MOTOROLA. For 68010 and 68020, it
must be an explicit option (set in std.${MACHINE} or, in the case of hp300,
inferred from the specific model option).
 1.103 09-Jan-2024  thorpej Remove duplicated / slightly-tweaked loadustp() (load user segment table)
routines from all of the m68k ports using the shared pmap. Instead, in
pmap_init(), set up a function pointer to the appropriate mmu_load_urp*()
function in mmu_subr.s.
 1.102 23-Nov-2019  ad cpu_need_resched():

- Remove all code that should be MI, leaving the bare minimum under arch/.
- Make the required actions very explicit.
- Pass in LWP pointer for convenience.
- When a trap is required on another CPU, have the IPI set it locally.
- Expunge cpu_did_resched().
 1.101 18-Feb-2019  thorpej Refactor the 68040 writeback() from each m68k port's trap handler into a
shared copy: m68040_writeback(). It is essentially a copy of the Atari
version, with some minor cosmetic tweaks and one small performance optimization
from the mvme68k port.

Tested by rjs@ on a Quadra 950. (Thanks!)
 1.100 22-Aug-2018  msaitoh - Cleanup for dynamic sysctl:
- Remove unused *_NAMES macros for sysctl.
- Remove unused *_MAXID for sysctls.
- Move CTL_MACHDEP sysctl definitions for m68k into m68k/include/cpu.h and
use them on all m68k machines.
 1.99 17-Dec-2016  flxd branches: 1.99.14; 1.99.16;
Fix typo "one the" and architecture where appropriate.
 1.98 19-Oct-2013  christos branches: 1.98.6; 1.98.10;
make cpu_need_resched() macros consistent; __USE flags
 1.97 02-Feb-2012  tsutsui branches: 1.97.6; 1.97.10;
Always include <m68k/cpu.h> (i.e. outside #if defined(_KERNEL))
for crash(8) as amiga and sun3. There are _KERNEL protections in it.

Briefly tested by "build.sh -m news68k -U build".
Further possible botch will be fixed later.
 1.96 16-May-2011  tsutsui branches: 1.96.4; 1.96.8;
- merge and move pasted m68k MD setreg() functions into m68k/m68k_machdep.c
- move m68881_save() and m68881_restore() declarations into <m68k/m68k.h>

Briefly tested and no obvious breakage on atari, sun3, and x68k.
 1.95 08-Feb-2011  rmind Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.
 1.94 22-Dec-2010  matt branches: 1.94.2; 1.94.4;
Collect cpu_info and friends and move to m68k/include/cpu.h
Add a define __HAVE_CPU_DATA_FIRST which means that cpu_data is the first
member in struct cpu_info.
 1.93 21-Oct-2009  rmind branches: 1.93.4;
Remove uarea swap-out functionality:

- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code. Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.

Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).

Discussed on <tech-kern>, reviewed by <ad>.
 1.92 27-Feb-2008  xtraeme branches: 1.92.4;
Remove CTL_MACHDEP_NAMES, it's not used anywhere.

Ok by martin@.
 1.91 19-Feb-2008  dogcow branches: 1.91.2; 1.91.6;
revert previous; as yamt pointed out, these bits are in <sys/cpu.h>.
 1.90 19-Feb-2008  dogcow cargo-cult CPU_INFOITERATOR and _FOREACH to make kern_prf.c build again.
These should probably be abstracted out to sys/cpu.h at some point, since
they don't really change from arch to arch.
 1.89 17-Oct-2007  garbled Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.
 1.88 04-Aug-2007  ad branches: 1.88.2;
Add ci_cpuid where it's missing.
 1.87 02-Jun-2007  tsutsui branches: 1.87.2; 1.87.4; 1.87.8;
Rather than attaching fpu as a usual device during cpu_configure(9),
initialize it explicitly in identifycpu() (before cpu_configure(9))
because after yamt-idlelwp merge savectx() is called before
cpu_configure(9) and it requires fputype initialized properly,
otherwise a kernel fails in savectx() if a machine doesn't have an FPU.
 1.86 21-May-2007  tsutsui Move declarations of m68k common functions
from <machine/cpu.h> to <m68k/m68k.h>.
While here, remove some obsolete function decls.
 1.85 21-May-2007  tsutsui Remove obsolete decralations of switch_exit() and switch_lwp_ext().
 1.84 20-May-2007  mhitch Add missing call to lwp_startup() in lwp_trampoline() (which was renamed
from proc_trampoline to match the other ports).

A DIAGNOSTIC kernel will now boot and run. LOCKDEBUG still doesn't work yet.
Also, my amiga no longer loses time.
 1.83 17-May-2007  rjs Start yamt-idlelwp fixes.
 1.82 04-Mar-2007  christos branches: 1.82.2; 1.82.4; 1.82.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.81 16-Feb-2007  ad branches: 1.81.2;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.
 1.80 09-Feb-2007  ad Merge newlock2 to head.
 1.79 11-Dec-2005  christos branches: 1.79.20;
merge ktrace-lwp.
 1.78 03-Jun-2005  rjs branches: 1.78.2;
Add const.
 1.77 15-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*.
 1.76 26-Sep-2004  yamt don't expose cpu_info to userland.
 1.75 22-Sep-2004  yamt move some per-cpu data definitions to MI place so that they can be modified
without touching all ports. discussed on tech-kern@.
 1.74 04-Jan-2004  jdolecek Rearrange process exit path to avoid need to free resources from different
process context ('reaper').

From within the exiting process context:
* deactivate pmap and free vmspace while we can still block
* introduce MD cpu_lwp_free() - this cleans all MD-specific context (such
as FPU state), and is the last potentially blocking operation;
all of cpu_wait(), and most of cpu_exit(), is now folded into cpu_lwp_free()
* process is now immediatelly marked as zombie and made available for pickup
by parent; the remaining last lwp continues the exit as fully detached
* MI (rather than MD) code bumps uvmexp.swtch, cpu_exit() is now same
for both 'process' and 'lwp' exit

uvm_lwp_exit() is modified to never block; the u-area memory is now
always just linked to the list of available u-areas. Introduce (blocking)
uvm_uarea_drain(), which is called to release the excessive u-area memory;
this is called by parent within wait4(), or by pagedaemon on memory shortage.
uvm_uarea_free() is now private function within uvm_glue.c.

MD process/lwp exit code now always calls lwp_exit2() immediatelly after
switching away from the exiting lwp.

g/c now unneeded routines and variables, including the reaper kernel thread
 1.73 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.72 17-Jan-2003  thorpej branches: 1.72.2;
Merge the nathanw_sa branch.
 1.71 28-Oct-2002  chs untangle includes a bit:
don't include cpu.h in pmap.h, nor cacheops.h in cpu.h. instead,
include cpu.h and cacheops.h in just those .c files that need them.
 1.70 10-Apr-2002  briggs Use m68k/m68k/cacheops.[ch]
Use m68k/m68k/bus_dma.c
- Add mainbus_attach_args with bus_space_tag_t and bus_dma_tag_t.
- Use passed-in tags for nubus scan.
 1.69 04-Mar-2002  shiba Add the machine id of PowerBook 190CS.
 1.68 20-Nov-2001  chs 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.
 1.67 30-May-2001  mrg branches: 1.67.2; 1.67.8;
use _KERNEL_OPT
 1.66 19-Dec-2000  scw branches: 1.66.2;
Unification of the m68k syscall() function.
 1.65 25-Aug-2000  thorpej Make need_resched() take a "struct cpu_info *" argument. This
causes gives a primitive form of processor affinity. Its use in
roundrobin() still needs some work.
 1.64 26-May-2000  thorpej First sweep at scheduler state cleanup. Collect MI scheduler
state into global and per-CPU scheduler state:

- Global state: sched_qs (run queues), sched_whichqs (bitmap
of non-empty run queues), sched_slpque (sleep queues).
NOTE: These may collectively move into a struct schedstate
at some point in the future.

- Per-CPU state, struct schedstate_percpu: spc_runtime
(time process on this CPU started running), spc_flags
(replaces struct proc's p_schedflags), and
spc_curpriority (usrpri of processes on this CPU).

- Every platform must now supply a struct cpu_info and
a curcpu() macro. Simplify existing cpu_info declarations
where appropriate.

- All references to per-CPU scheduler state now made through
curcpu(). NOTE: this will likely be adjusted in the future
after further changes to struct proc are made.

Tested on i386 and Alpha. Changes are mostly mechanical, but apologies
in advance if it doesn't compile on a particular platform.
 1.63 10-Aug-1999  thorpej branches: 1.63.2;
Define cpu_number() as discussed on tech-smp.
 1.62 28-Jun-1999  briggs 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.
 1.61 06-Apr-1999  scottr Prototype kvtop() here.
 1.60 26-Feb-1999  is branches: 1.60.2; 1.60.4;
oops. void->int
 1.59 26-Feb-1999  is synchronize types, and s/curproc/p/ in one forgotten place
 1.58 25-Feb-1999  is mac68k part of pr 6152 fix, and missing bits for the others
 1.57 22-Dec-1998  scottr vm_offset_t -> {paddr_t, vaddr_t}
 1.56 11-Nov-1998  thorpej Changes to support fork_kthread():
- cpu_set_kpc() now takes void *arg third argument, passed to the
entry point.
- cpu_fork() allows parent to be non-curproc iff parent is proc0.
When forking non-curproc, assume its state has already been saved.
- Adjust various pieces of machine-dependent code to account of all of this.
 1.55 22-Aug-1998  scottr Add gestalt machine type for the PowerBook 190/190cs.
 1.54 13-Feb-1998  scottr Avoid declaring the "astpending" and "want_resched" globals in cpu.h,
as this breaks C++ code that happens to indirectly include this header.
Both Matthias Scheler and I noticed this, independently.

This problem notably does not affect the atari and sun3/sun3x ports,
which have already implemented a similar solution.
 1.53 26-Oct-1997  is Make these compile after m68k/m68k.h 1.4->1.5.
 1.52 20-Oct-1997  scottr branches: 1.52.2;
Convert to MI 8530 SCC driver, from Bill Studenmund. The new front end
also supports DTR/CTS flow control.
 1.51 02-Oct-1997  briggs port-mac68k/4175: Need to add support for 33 MHz LC475/Q605.
Fix applied. Thanks to David Johnston for the PR and the reminder.
 1.50 29-Jun-1997  scottr branches: 1.50.4;
Prototype DCIS().
 1.49 22-May-1997  scottr Remove redundant cpu_set_kpc() prototype, found by Paul Goyette.
 1.48 20-May-1997  scottr Adjust for previous m68k/pcb.h change
 1.47 13-Apr-1997  scottr Move all splxxx() and softint-related macros and prototypes to intr.h,
and include it where appropriate.
 1.46 15-Mar-1997  briggs Move physaccess/physunaccess prototypes.
 1.45 10-Feb-1997  scottr Console bell callback support prototypes
 1.44 20-Jan-1997  scottr branches: 1.44.2;
Define single-instruction implementations of setsoft*() and siroff(),
and declare ssir as volatile. This avoids the problem of lost softints
should a hard interrupt cause a softint to be flagged while we are
clearing a different one.

Idea from atari mtpr.h, modified/optimized by me.
 1.43 15-Oct-1996  scottr Define MACH_CLASSQ2, used by Performa 575.
Remove susword() because of prototype conflict with <sys/systm.h>.
 1.42 12-Oct-1996  scottr Add second Quadra class and machineid (gestalt value) for Color Classic II
 1.41 11-Sep-1996  thorpej Use <m68k/cpu.h>.
 1.40 12-Jul-1996  scottr Back out previous; actually, this is never a problem for us. (Duh.)
 1.39 10-Jul-1996  scottr Fix from Leo Weppelman: Change accesses to 'ssir' to inline asm macro's.
 1.38 11-Jun-1996  scottr Add Powerbook 500 series machine ID
 1.37 07-Jun-1996  briggs Patches from Bill Studenmund to get serial default settings from the booter.
 1.36 25-May-1996  briggs More from Dave Huang (khym@bga.com)--set ROMLEN to 2MB and make another
class for AV machines (C660AV and Q840AV).
 1.35 22-May-1996  briggs Add MACH_CLASSDUO.
 1.34 05-May-1996  briggs branches: 1.34.4;
m68881_restore takes struct fpframe *, not int [].
 1.33 05-May-1996  briggs Prototype for sunos_sendsig() is now in sunos.h as suggested by veego.
 1.32 05-May-1996  briggs Include pcb.h for prototypes.
 1.31 05-May-1996  briggs Move a few prototypes into machine/cpu.h.
 1.30 05-May-1996  briggs Prototype for sunos_sendsig().
 1.29 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.28 27-Feb-1996  briggs Clean out some unneeded constants.
 1.27 09-Jan-1996  briggs Add #defines for some more machines.
 1.26 21-Dec-1995  mycroft Remove deprecated cpu_setstack().
 1.25 14-Sep-1995  briggs Shuffle MACH_CLASSes around a tad and add IIvx as a seperate class because
it may have a different method for accessing the 'via2' functions.
 1.24 12-Aug-1995  briggs Get rid of cpu040 for good.
 1.23 06-Jul-1995  briggs Change NBSBASE to 0x90000000 and let it and NBSTOP be defined.
 1.22 21-Jun-1995  briggs Remove cpu_set_init_frame() define.
Remove BROKEN_SWAP
Change cpu_swapout() to null-op.
Remove profile_tick() define.
Add some 040 stuff and make other 040 stuff compat. with hp300 port.
Cleanup a bit.
 1.21 17-May-1995  briggs Nuke cpu_exec and remove extra semicolon on cpu_swapout() panic string
(preparing for more changes in a bit...)
 1.20 05-May-1995  cgd define BROKEN_SWAP and/or cpu_swapout as appropriate.
 1.19 22-Apr-1995  christos - added sunos_machdep.c for sun3, atari, amiga and mac68k.
- changed machdep.c and trap.c to use struct emul.
- remove ep_setup references.
- added struct emul to all emulations.
 1.18 23-Mar-1995  briggs KERNEL -> _KERNEL
 1.17 03-Dec-1994  briggs Mac ROM Glue changes from grantham@tenon.com.
 1.16 26-Oct-1994  cgd new RCS ID format.
 1.15 31-Jul-1994  briggs Add a serial console flag that's passed in from the booter.
 1.14 21-Jul-1994  briggs Add a field for cpu-dependent structure to flag if SONIC is on-board.
 1.13 10-Jul-1994  briggs Be somewhat better at machine dependence.
 1.12 07-Jul-1994  briggs branches: 1.12.2;
Revert back to old HP MMU defines so we can use fpsp w/o changes.
 1.11 26-Jun-1994  briggs Cleanup a lot and bring in line w/ 4.4-lite.
 1.10 06-May-1994  briggs Get things to compile with latest changes.
 1.9 22-Apr-1994  briggs Make external definition for cpu040.
 1.8 21-Apr-1994  briggs '040 changes from Amiga.
Protect against multiple inclusion.
Swap arguments in struct clockframe.
 1.7 01-Mar-1994  briggs At least recognize different machine types.
 1.6 27-Feb-1994  briggs Add LCII machine id.
 1.5 22-Feb-1994  briggs Add a few new defined machine type constants and a few new globals.
 1.4 17-Jan-1994  briggs We aren't a VAX.
 1.3 15-Dec-1993  briggs Change constants and comments to reflect the current MACHINE value.
Define T_BRKPT and T_WATCHPOINT.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.12.2.3 11-Aug-1994  mycroft update from trunk
 1.12.2.2 24-Jul-1994  cgd update, as requested by briggs
 1.12.2.1 07-Jul-1994  cgd file cpu.h was added on branch netbsd-1-0 on 1994-07-24 01:23:22 +0000
 1.34.4.5 10-Jul-1996  scottr Whoops. This was _not_ supposed to be here.
 1.34.4.4 10-Jul-1996  scottr Fix from Leo Weppelman: Change accesses to 'ssir' to inline asm macro's.
 1.34.4.3 11-Jun-1996  scottr Pull up from trunk:
>Add Powerbook 500 series machine ID
 1.34.4.2 07-Jun-1996  briggs Bring in last changes from -current. ADB fixes for MacTV and serial state
from the booter.
 1.34.4.1 01-Jun-1996  scottr Pull up version 1.36 from the main branch; Duo/AV fixes.
 1.44.2.1 12-Mar-1997  is Merge in changes from The Trunk, partially just reimplementing newarp.
 1.50.4.1 14-Oct-1997  thorpej Update marc-pcmcia branch from trunk.
 1.52.2.1 23-Nov-1998  cgd pull up rev 1.55 from trunk (scottr)
 1.60.4.1 21-Apr-1999  perry branches: 1.60.4.1.2;
pullup 1.60->1.61 (scottr): sync to hp300 pmap
 1.60.4.1.2.2 01-Jul-1999  thorpej Sync w/ -current.
 1.60.4.1.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.60.2.2 01-Nov-1999  scottr Sync with main branch.
 1.60.2.1 16-May-1999  scottr Sync with main branch.
 1.63.2.2 05-Jan-2001  bouyer Sync with HEAD
 1.63.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.66.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.67.8.8 03-Dec-2002  gmcgarry Now use cpu_proc_fork().
 1.67.8.7 11-Nov-2002  nathanw Catch up to -current
 1.67.8.6 17-Apr-2002  nathanw Catch up to -current.
 1.67.8.5 01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.67.8.4 08-Jan-2002  nathanw Catch up to -current.
 1.67.8.3 08-Dec-2001  thorpej Add a cpu_proc_fork(), called from uvm_proc_fork(), which takes care
of machine-dependent handling a fork() time (this is different from
forking the actual context in an LWP world). #define it away on
platforms which do not need it.

Problem noted by Gregory McGarry.
 1.67.8.2 18-Nov-2001  scw MD Scheduler Activation bits for Mac68k.

XXX: I'm unable to even compile-test these changes since Mac68k hasn't
XXX: transitioned to ELF, and I don't have a -current m68k a.out toolchain
XXX: handy.
 1.67.8.1 30-May-2001  scw file cpu.h was added on branch nathanw_sa on 2001-11-18 18:12:01 +0000
 1.67.2.3 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.67.2.2 16-Mar-2002  jdolecek Catch up with -current.
 1.67.2.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.72.2.7 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.72.2.6 17-Jan-2005  skrll Sync with HEAD.
 1.72.2.5 19-Oct-2004  skrll Sync with HEAD
 1.72.2.4 24-Sep-2004  skrll Sync with HEAD.
 1.72.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.72.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.72.2.1 03-Aug-2004  skrll Sync with HEAD
 1.78.2.3 17-Mar-2008  yamt sync with head.
 1.78.2.2 03-Sep-2007  yamt sync with head.
 1.78.2.1 26-Feb-2007  yamt sync with head.
 1.79.20.1 06-Feb-2007  ad Make amiga & mac68k compile.
 1.81.2.1 12-Mar-2007  rmind Sync with HEAD.
 1.82.10.3 03-Oct-2007  garbled Sync with HEAD
 1.82.10.2 26-Jun-2007  garbled Sync with HEAD.
 1.82.10.1 22-May-2007  matt Update to HEAD.
 1.82.4.1 11-Jul-2007  mjf Sync with head.
 1.82.2.3 20-Aug-2007  ad Sync with HEAD.
 1.82.2.2 09-Jun-2007  ad Sync with head.
 1.82.2.1 27-May-2007  ad Sync with head.
 1.87.8.1 04-Aug-2007  jmcneill Sync with HEAD.
 1.87.4.1 15-Aug-2007  skrll Sync with HEAD.
 1.87.2.1 07-Aug-2007  matt Sync with HEAD.
 1.88.2.2 23-Mar-2008  matt sync with HEAD
 1.88.2.1 06-Nov-2007  matt sync with HEAD
 1.91.6.1 03-Apr-2008  mjf Sync with HEAD.
 1.91.2.1 24-Mar-2008  keiichi sync with head.
 1.92.4.1 11-Mar-2010  yamt sync with head
 1.93.4.2 31-May-2011  rmind sync with head
 1.93.4.1 05-Mar-2011  rmind sync with head
 1.94.4.1 17-Feb-2011  bouyer Sync with HEAD
 1.94.2.1 06-Jun-2011  jruoho Sync with HEAD.
 1.96.8.1 18-Feb-2012  mrg merge to -current.
 1.96.4.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.96.4.1 17-Apr-2012  yamt sync with head
 1.97.10.1 18-May-2014  rmind sync with head
 1.97.6.2 03-Dec-2017  jdolecek update from HEAD
 1.97.6.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.98.10.1 07-Jan-2017  pgoyette Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
 1.98.6.1 05-Feb-2017  skrll Sync with HEAD
 1.99.16.2 08-Apr-2020  martin Merge changes from current as of 20200406
 1.99.16.1 10-Jun-2019  christos Sync with HEAD
 1.99.14.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.5 06-Nov-2017  christos Cleanup and clarify the ELFSIZE mess:

We now have 2 variables automatically set in elf_machdep.h:

ARCH_ELFSIZE: the size for userland binaries
KERN_ELFSIZE: the size for the kernel binaries

DB_ELFSIZE has been deleted and KERN_ELFSIZE should have always the
same values DB_ELFSIZE used to have.

In sys/exec_elf.h, if ELFSIZE is not set, it is set to KERN_ELFSIZE
for the kernel and ARCH_ELFSIZE for userland. These defaults should
eliminate the need for most manual ELFSIZE setting.
 1.4 20-Nov-2001  chs branches: 1.4.166;
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.
 1.3 26-Oct-1994  cgd branches: 1.3.48; 1.3.52;
new RCS ID format.
 1.2 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.1 15-Dec-1993  briggs Added for ddb support. I think it's at least partially wrong. This and
the files in mac68k/db_* started off as the sun3 files...
 1.3.52.1 08-Jan-2002  nathanw Catch up to -current.
 1.3.48.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.4.166.1 03-Dec-2017  jdolecek update from HEAD
 1.8 03-Apr-2019  christos centralize setdisklabel(9)
 1.7 30-Aug-2011  bouyer branches: 1.7.54;
Add getlabelusesmbr(), as proposed in
http://mail-index.netbsd.org/tech-userlevel/2011/08/25/msg005404.html
This is used by disk tools such as disklabel(8) to dynamically decide is
the undelyling platform uses a disklabel-in-mbr-partition or not
(instead of using a compile-time list of ports).
getlabelusesmbr() reads the sysctl kern.labelusesmbr, takes its value from the
machdep #define LABELUSESMBR.
For evbmips, make LABELUSESMBR 1 if the platform uses pmon
as bootloader, and 0 (the previous value) otherwise.
 1.6 27-Jan-1999  thorpej Use <sys/disklabel_mbr.h>.
 1.5 30-Oct-1998  scottr Add DOS partition handling, from Ken Nakata in PR 4999, with
only slight tweaking by me.

XXX - does not currently handle NetBSD/i386 or 386BSD/FreeBSD partitions.
 1.4 02-Mar-1998  scottr Add magic number for driver map structure. (oops!)
 1.3 27-Feb-1998  scottr Integrate Macintosh partition map and driver descriptor map definitions.
 1.2 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.1 14-Oct-1994  cgd move arch dependence to archs. clean up a bit. deal with weird MAXPARTITONS.
 1.7.54.1 10-Jun-2019  christos Sync with HEAD
 1.1 12-Jul-1998  thorpej Basic elf_machdep.h for m68k; doesn't include relocations, yet.
 1.6 17-Mar-2000  mycroft In the `MY THAT'S GROSS' department...
Eliminate the recursive include of machine/endian.h from sys/endian.h.
 1.5 26-Oct-1994  cgd branches: 1.5.34;
new RCS ID format.
 1.4 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.3 02-Dec-1993  briggs Add symbols for quads to limits and endian and protect endian from mult.
inclusion.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.5.34.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.1 17-Mar-2000  mycroft branches: 1.1.6;
In the `MY THAT'S GROSS' department...
Eliminate the recursive include of machine/endian.h from sys/endian.h.
 1.1.6.2 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.1.6.1 17-Mar-2000  bouyer file endian_machdep.h was added on branch thorpej_scsipi on 2000-11-20 20:12:19 +0000
 1.10 08-Oct-1996  cgd moved to aout_machdep.h (via repository copy)
 1.9 08-Sep-1996  thorpej Use <m68k/exec.h>.
 1.8 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.7 26-Oct-1994  cgd new RCS ID format.
 1.6 06-Dec-1993  briggs Move MID_MACHINE to param.h from exec.h and get rid of bogus includes.
 1.5 03-Dec-1993  briggs Added struct relocation_info_mac68k. Copied from hp300.
 1.4 02-Dec-1993  briggs Update MACHINE to mac68k in param.h.
Update MACHINE_MID to MID_M68K -- untested.
Add __LDPGSZ as 8192 -- untested.
 1.3 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.2 18-Oct-1993  pk Put definition of __LDPGSZ and `struct relocation_info' where they belong:
in <machine/exec.h>.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.1 27-Dec-2023  thorpej Re-factor the 680x0 Function Code definitions into their own
separate file (as was done on the sun2/sun3 ports ages ago)
and switch everyone to the common header.
 1.1 24-Dec-2015  christos branches: 1.1.2; 1.1.18;
fenv for m68k
 1.1.18.2 03-Dec-2017  jdolecek update from HEAD
 1.1.18.1 24-Dec-2015  jdolecek file fenv.h was added on branch tls-maxphys on 2017-12-03 11:36:24 +0000
 1.1.2.2 27-Dec-2015  skrll Sync with HEAD (as of 26th Dec)
 1.1.2.1 24-Dec-2015  skrll file fenv.h was added on branch nick-nhusb on 2015-12-27 12:09:38 +0000
 1.7 03-Feb-1998  mycroft Prototype __flt_rounds() consistently.
 1.6 05-May-1996  briggs branches: 1.6.16;
Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.5 20-Jun-1995  jtc Wrap with #ifndef _XXX_FLOAT_H_/#define _XXX_FLOAT_H_/ ... /#endif.
 1.4 26-Oct-1994  cgd new RCS ID format.
 1.3 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.6.16.1 08-May-1998  mycroft Sync with trunk, per request of mycroft.
 1.5 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.4 26-Oct-1994  cgd new RCS ID format.
 1.3 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.15 07-Sep-2015  dholland Final bit of PR 41200: headers that declare ioctls should include sys/ioccom.h.
This covers most if not all of the MD headers.

XXX: a lot of the ioctl definitions in some of these files are cutpasted.
 1.14 08-Feb-2011  rmind branches: 1.14.14; 1.14.32;
Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.
 1.13 04-Mar-2007  christos branches: 1.13.66; 1.13.72; 1.13.74;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.12 11-Dec-2005  christos branches: 1.12.26;
merge ktrace-lwp.
 1.11 29-Apr-2004  fredb branches: 1.11.12;
Protect against multiple inclusion. Lets "kdump" and "ktrace" build again
on mac68k.
 1.10 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.9 20-Nov-2001  chs branches: 1.9.16;
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.
 1.8 14-Feb-2000  scottr branches: 1.8.8; 1.8.12;
Merge wscons work onto the main development branch.
 1.7 01-Jul-1998  scottr branches: 1.7.8; 1.7.16;
Whoops, forgot to bracket struct grfinfo with #ifdef GRF_COMPAT.
 1.6 01-Jul-1998  scottr Add a GRF_COMPAT option so that old-style grf ioctl() code can be
removed from the kernel.
 1.5 02-Jul-1995  briggs Add missing interface for getting a grfmode structure from kernel.
 1.4 02-Jul-1995  briggs Add a couple elements to the grfmode structure.
 1.3 29-Apr-1995  briggs Add new nubus handling that's much more robust.
Update via, if_ae, and grf accordingly.
Revamp grf.
 1.2 26-Oct-1994  cgd new RCS ID format.
 1.1 30-Jul-1994  lkestel branches: 1.1.2;
Moved adbsys.h grfioctl.h and keyboard.h to include to make desktop
and X compile more cleanly.
 1.1.2.2 30-Jul-1994  lkestel Moved adbsys.h grfioctl.h and keyboard.h to include to make desktop
and X compile more cleanly.
 1.1.2.1 30-Jul-1994  lkestel file grfioctl.h was added on branch netbsd-1-0 on 1994-07-30 04:22:00 +0000
 1.7.16.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.7.8.2 20-Nov-1999  scottr The grf pseudo-device obviates WSDISPLAY_COMPAT_GRF; translate tests on the latter to
tests against NGRF instead.
 1.7.8.1 11-Mar-1999  scottr First cut at grf emulation. Neither GRFIOCMAP nor mmap'ing a wsdisplay device
work, though several other grf ioctls are properly emulated.
 1.8.12.1 08-Jan-2002  nathanw Catch up to -current.
 1.8.8.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.9.16.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.9.16.2 18-Sep-2004  skrll Sync with HEAD.
 1.9.16.1 03-Aug-2004  skrll Sync with HEAD
 1.11.12.1 03-Sep-2007  yamt sync with head.
 1.12.26.1 12-Mar-2007  rmind Sync with HEAD.
 1.13.74.1 17-Feb-2011  bouyer Sync with HEAD
 1.13.72.1 06-Jun-2011  jruoho Sync with HEAD.
 1.13.66.1 05-Mar-2011  rmind sync with head
 1.14.32.1 22-Sep-2015  skrll Sync with HEAD
 1.14.14.1 03-Dec-2017  jdolecek update from HEAD
 1.2 30-Aug-1999  mycroft A foolish consistency.
 1.1 15-Mar-1999  minoura branches: 1.1.4;
Pullin m68k/ieee.h.
 1.1.4.3 01-Nov-1999  scottr Sync with main branch.
 1.1.4.2 16-May-1999  scottr Sync with main branch.
 1.1.4.1 15-Mar-1999  scottr file ieee.h was added on branch scottr-mac68k-wscons on 1999-05-16 22:38:10 +0000
 1.2 16-Apr-1995  jtc Fix typo: ieefp.h -> ieeefp.h.
 1.1 09-Apr-1995  mycroft Move fp_except and fp_rnd definitions to machine/include.
 1.1 14-Apr-2001  kleink branches: 1.1.2; 1.1.4; 1.1.12;
Add definitions of C99 integer constant macros.
 1.1.12.2 14-Apr-2001  kleink Add definitions of C99 integer constant macros.
 1.1.12.1 14-Apr-2001  kleink file int_const.h was added on branch nathanw_sa on 2001-04-14 22:38:39 +0000
 1.1.4.1 21-Jun-2001  nathanw Catch up to -current.
 1.1.2.2 21-Apr-2001  bouyer Sync with HEAD
 1.1.2.1 14-Apr-2001  bouyer file int_const.h was added on branch thorpej_scsipi on 2001-04-21 17:53:56 +0000
 1.1 15-Apr-2001  kleink branches: 1.1.2; 1.1.4; 1.1.12;
Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.1.12.2 15-Apr-2001  kleink Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.1.12.1 15-Apr-2001  kleink file int_fmtio.h was added on branch nathanw_sa on 2001-04-15 17:13:13 +0000
 1.1.4.1 21-Jun-2001  nathanw Catch up to -current.
 1.1.2.2 21-Apr-2001  bouyer Sync with HEAD
 1.1.2.1 15-Apr-2001  bouyer file int_fmtio.h was added on branch thorpej_scsipi on 2001-04-21 17:53:56 +0000
 1.1 15-Apr-2001  kleink branches: 1.1.2; 1.1.4; 1.1.12;
Add definitions of C99 specified-width integer type limits.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.1.12.2 15-Apr-2001  kleink Add definitions of C99 specified-width integer type limits.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.1.12.1 15-Apr-2001  kleink file int_limits.h was added on branch nathanw_sa on 2001-04-15 15:29:08 +0000
 1.1.4.1 21-Jun-2001  nathanw Catch up to -current.
 1.1.2.2 21-Apr-2001  bouyer Sync with HEAD
 1.1.2.1 15-Apr-2001  bouyer file int_limits.h was added on branch thorpej_scsipi on 2001-04-21 17:53:57 +0000
 1.1 14-Apr-2001  kleink branches: 1.1.2; 1.1.4; 1.1.12;
Add definitions of C99 minimum-width and greatest-width integer types.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.1.12.2 14-Apr-2001  kleink Add definitions of C99 minimum-width and greatest-width integer types.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.1.12.1 14-Apr-2001  kleink file int_mwgwtypes.h was added on branch nathanw_sa on 2001-04-14 12:19:56 +0000
 1.1.4.1 21-Jun-2001  nathanw Catch up to -current.
 1.1.2.2 21-Apr-2001  bouyer Sync with HEAD
 1.1.2.1 14-Apr-2001  bouyer file int_mwgwtypes.h was added on branch thorpej_scsipi on 2001-04-21 17:53:57 +0000
 1.1 26-Jun-2000  kleink branches: 1.1.2;
Add <machine/int_types.h>, which provides namespace-pure definitions
of exact-width integer types.
 1.1.2.2 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.1.2.1 26-Jun-2000  bouyer file int_types.h was added on branch thorpej_scsipi on 2000-11-20 20:12:20 +0000
 1.33 28-Feb-2024  thorpej Fix up the mac68k interrupt handlers to work with the new style common
clockframe layout and remove the CLOCK_FORMAT0 work-around. As a nice
side-effect, this also eliminates the super-sketchy stack unwinding used
by rtclock_intr to get at the interrupt stack frame.
 1.32 11-Jul-2023  riastradh mac68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).
 1.31 17-Jul-2008  tsutsui branches: 1.31.112;
Revert part of previous changes:
> make makeiplcookie() return PSL bits via ipl2psl_table[]
> rather than IPL_FOO indexes
because ipl2psl_table[] could be updated during autoconf(9)
and we can't use it as cookie before cpu_configure(9).
 1.30 19-Jun-2008  tsutsui branches: 1.30.2;
Unify splraiseipl(9) implementation among m68k ports as per
suggestion from isaki@ on port-m68k.

For mac68k:
- rename mac68k_ipls[] to common ipl2psl_table[]
- make makeiplcookie() return PSL bits via ipl2psl_table[]
rather than IPL_FOO indexes
 1.29 26-Jan-2008  tsutsui branches: 1.29.6; 1.29.10; 1.29.12; 1.29.14;
Remove unused splfoo() definitions.
 1.28 03-Dec-2007  ad Interrupt handling changes, in discussion since February:

- Reduce available SPL levels for hardware devices to none, vm, sched, high.
- Acquire kernel_lock only for interrupts at IPL_VM.
- Implement threaded soft interrupts.
 1.27 11-Mar-2007  thorpej branches: 1.27.16; 1.27.18; 1.27.24;
- Shrink ipl_cookie_t from 32-bits to 16-bits (large enough to hold
an SR value or an IPL_* constant).
- Take advange of the smaller ipl_cookie_t to shrink kmutex_t from
16 bytes to 8 bytes by overlapping storage where possible.
- Implement a RAS-based _lock_cas() for mc68010 systems (Sun2). See
sun68k/sun68k/isr.c.

Tested on various m68k platforms, but NOT Sun2. In any case, at least
Sun2 compiles now.
 1.26 08-Mar-2007  tsutsui branches: 1.26.2;
MI softintr(9)'fy.
Probably problematic, but LC630 is running at single user.
 1.25 16-Feb-2007  ad branches: 1.25.2;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.
 1.24 21-Dec-2006  yamt merge yamt-splraiseipl branch.

- finish implementing splraiseipl (and makeiplcookie).
http://mail-index.NetBSD.org/tech-kern/2006/07/01/0000.html
- complete workqueue(9) and fix its ipl problem, which is reported
to cause audio skipping.
- fix netbt (at least compilation problems) for some ports.
- fix PR/33218.
 1.23 24-Dec-2005  perry branches: 1.23.20; 1.23.22;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.
 1.22 27-Nov-2005  yamt implement splraiseipl() for the following ports.
evbppc, evbmips, evbsh3, hp700, mac68k, vax, x68k.
 1.21 15-Jan-2005  chs branches: 1.21.10; 1.21.16;
de-__P, remove register, ansify, b* -> mem*.
 1.20 13-Apr-2001  thorpej branches: 1.20.8; 1.20.24;
Remove the use of splimp() from the NetBSD kernel. splnet()
and only splnet() is allowed for the protection of data structures
used by network devices.
 1.19 14-Jan-2001  thorpej branches: 1.19.2;
Make sure everybody has an splvm() and equate it with splimp() (splimp()
is the historical name for this interrupt level, and the historical name
is going to go away in the near future).
 1.18 22-Aug-2000  thorpej Add spllock(). See spl(9) for details.
 1.17 06-Nov-1999  scottr Change the behavior of spladb() so that it raises the IPL only
high enough to block ADB interrupts.
 1.16 05-Aug-1999  thorpej branches: 1.16.2; 1.16.4; 1.16.8;
Change the semantics of splsoftclock() to be like other spl*() functions,
that is priority is rasied. Add a new spllowersoftclock() to provide the
atomic drop-to-softclock semantics that the old splsoftclock() provided,
and update calls accordingly.

This fixes a problem with using the "rnd" pseudo-device from within
interrupt context to extract random data (e.g. from within the softnet
interrupt) where doing so would incorrectly unblock interrupts (causing
all sorts of lossage).

XXX 4 platforms do not have priority-raising capability: newsmips, sparc,
XXX sparc64, and VAX. This platforms still have this bug until their
XXX spl*() functions are fixed.
 1.15 04-Aug-1999  thorpej Use an array for PSL values, rather than individual shortwords, like
the hp300 port.
 1.14 15-Jun-1999  kleink Slightly rearrange the SSIR inline assembly implementation in order to avoid
making assumptions on C symbol name prefixes.
 1.13 28-Feb-1999  scottr branches: 1.13.2; 1.13.6;
Move all IPL setup to intr.c, and do some sanity checking.
 1.12 17-Feb-1999  scottr Fix a typo in the (unused!) splsched() macro.
 1.11 25-Aug-1998  scottr The return value from intr_dispatch() is no longer necessary.
 1.10 25-Aug-1998  scottr Implement splaudio().
 1.9 12-Aug-1998  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.
 1.8 07-Nov-1997  scottr Update from John Wittkoski: bug fixes for Cuda support.
 1.7 04-Nov-1997  briggs Add in the if_mc ethernet driver for the AMD "MACE" part. This is the
internal ethernet on the Quadra/Centris 660av/840av.
Add initial support for the PSC (DMA controller) to support the above
(DMA SCSI remains unsupported). This involved also changing the way
that several interrupts are handled.
Above from David Huang <khym@bga.com>
Since the interrupts changed somewhat, we must also make the ipls
dynamic, defaulting to their prior levels and adjusted for the AVs.
I modelled this on the hp300.
 1.6 10-Oct-1997  scottr branches: 1.6.2;
Remove advertising clause.
 1.5 03-Aug-1997  scottr Drop splsched() to spl3(), so that it no longer blocks serial interrupts.
 1.4 23-Jul-1997  scottr branches: 1.4.2;
New implementation of _splraise(): use word-length operands where possible
by implementing entirely in assembly. This saves some 6 bytes on all MPUs,
and about 8 cycles on the 030.

Now that it's optimized, define spltty() in terms of _splraise() so that
we don't inadvertantly lower the SPL.
 1.3 12-May-1997  scottr Add en implementation of the Deferred Task Manager, contributed by Paul
Goyette <paul@pgoyette.bdt.com>.
 1.2 14-Apr-1997  scottr Add copyright notice.
 1.1 13-Apr-1997  scottr Move all splxxx() and softint-related macros and prototypes to intr.h,
and include it where appropriate.
 1.4.2.2 14-Oct-1997  thorpej Update marc-pcmcia branch from trunk.
 1.4.2.1 23-Aug-1997  thorpej Update marc-pcmcia branch from trunk.
 1.6.2.2 11-Nov-1997  mellon Pull rev 1.8 up from trunk (scottr)
 1.6.2.1 05-Nov-1997  mellon Pull rev 1.7 up from trunk (scottr)
 1.13.6.1 21-Jun-1999  thorpej Sync w/ -current.
 1.13.2.2 09-Nov-1999  scottr Sync with main branch.
 1.13.2.1 01-Nov-1999  scottr Sync with main branch.
 1.16.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.16.4.1 15-Nov-1999  fvdl Sync with -current
 1.16.2.3 21-Apr-2001  bouyer Sync with HEAD
 1.16.2.2 18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.16.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.19.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.20.24.2 11-Dec-2005  christos Sync with head.
 1.20.24.1 17-Jan-2005  skrll Sync with HEAD.
 1.20.8.2 13-Apr-2001  thorpej Remove the use of splimp() from the NetBSD kernel. splnet()
and only splnet() is allowed for the protection of data structures
used by network devices.
 1.20.8.1 13-Apr-2001  thorpej file intr.h was added on branch nathanw_sa on 2001-04-13 23:30:01 +0000
 1.21.16.1 29-Nov-2005  yamt sync with head.
 1.21.10.6 04-Feb-2008  yamt sync with head.
 1.21.10.5 07-Dec-2007  yamt sync with head
 1.21.10.4 03-Sep-2007  yamt sync with head.
 1.21.10.3 26-Feb-2007  yamt sync with head.
 1.21.10.2 30-Dec-2006  yamt sync with head.
 1.21.10.1 21-Jun-2006  yamt sync with head.
 1.23.22.1 21-Sep-2006  yamt implement new api for mac68k.
 1.23.20.1 12-Jan-2007  ad Sync with head.
 1.25.2.1 12-Mar-2007  rmind Sync with HEAD.
 1.26.2.2 03-Dec-2007  ad Sync with HEAD.
 1.26.2.1 13-Mar-2007  ad Sync with head.
 1.27.24.2 18-Feb-2008  mjf Sync with HEAD.
 1.27.24.1 08-Dec-2007  mjf Sync with HEAD.
 1.27.18.2 23-Mar-2008  matt sync with HEAD
 1.27.18.1 09-Jan-2008  matt sync with HEAD
 1.27.16.1 09-Dec-2007  jmcneill Sync with HEAD.
 1.29.14.2 18-Jul-2008  simonb Sync with head.
 1.29.14.1 27-Jun-2008  simonb Sync with head.
 1.29.12.2 18-Sep-2008  wrstuden Sync with wrstuden-revivesa-base-2.
 1.29.12.1 23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.29.10.1 04-May-2009  yamt sync with head.
 1.29.6.2 28-Sep-2008  mjf Sync with HEAD.
 1.29.6.1 29-Jun-2008  mjf Sync with HEAD.
 1.30.2.1 19-Oct-2008  haad Sync with HEAD.
 1.31.112.1 09-Aug-2023  martin Pull up following revision(s) (requested by maya in ticket #316):

sys/arch/m68k/include/mutex.h: revision 1.13
sys/arch/arm/include/cpu.h: revision 1.125
sys/arch/sun68k/include/intr.h: revision 1.21
sys/arch/arm/include/mutex.h: revision 1.28
sys/sys/rwlock.h: revision 1.18
sys/arch/powerpc/include/mutex.h: revision 1.7
sys/arch/arm/include/mutex.h: revision 1.29
sys/arch/powerpc/include/mutex.h: revision 1.8
sys/uvm/uvm_param.h: revision 1.42
sys/sys/ksem.h: revision 1.16
sys/arch/x86/include/mutex.h: revision 1.10
sys/sys/proc.h: revision 1.372
sys/sys/ksem.h: revision 1.17
sys/arch/ia64/include/mutex.h: revision 1.8
sys/arch/evbarm/include/intr.h: revision 1.29
sys/sys/lua.h: revision 1.9
sys/arch/next68k/include/intr.h: revision 1.23
sys/arch/ia64/include/mutex.h: revision 1.9
sys/arch/hp300/include/intr.h: revision 1.35
sys/arch/hp300/include/intr.h: revision 1.36
sys/arch/sparc/include/cpu.h: revision 1.111
sys/arch/hppa/include/mutex.h: revision 1.16
sys/arch/vax/include/intr.h: revision 1.31
sys/arch/hppa/include/mutex.h: revision 1.17
sys/arch/news68k/include/intr.h: revision 1.28
sys/arch/hppa/include/mutex.h: revision 1.18
sys/arch/hppa/include/intr.h: revision 1.3
sys/arch/hppa/include/mutex.h: revision 1.19
sys/arch/hppa/include/intr.h: revision 1.4
sys/sys/sched.h: revision 1.92
sys/opencrypto/cryptodev.h: revision 1.51
sys/arch/vax/include/mutex.h: revision 1.20
sys/arch/sparc64/include/mutex.h: revision 1.10
sys/arch/ia64/include/sapicvar.h: revision 1.2
sys/arch/riscv/include/mutex.h: revision 1.5
sys/arch/amiga/dev/grfabs_cc.c: revision 1.39
sys/external/bsd/drm2/include/linux/idr.h: revision 1.11
sys/arch/riscv/include/mutex.h: revision 1.6
sys/ddb/files.ddb: revision 1.16
sys/arch/mac68k/include/intr.h: revision 1.32
share/man/man4/ddb.4: revision 1.203
sys/ddb/db_command.c: revision 1.183
sys/arch/mips/include/mutex.h: revision 1.10
sys/ddb/db_command.c: revision 1.184
sys/arch/x68k/include/intr.h: revision 1.22
sys/arch/sparc/include/psl.h: revision 1.51
sys/arch/or1k/include/mutex.h: revision 1.4
sys/arch/mips/include/mutex.h: revision 1.11
sys/arch/arm/xscale/pxa2x0_intr.h: revision 1.16
sys/arch/sparc64/include/cpu.h: revision 1.134
sys/arch/sparc/include/psl.h: revision 1.52
sys/arch/or1k/include/mutex.h: revision 1.5
sys/arch/mvme68k/include/intr.h: revision 1.22
sys/arch/luna68k/include/intr.h: revision 1.16
external/cddl/osnet/sys/sys/kcondvar.h: revision 1.6
sys/arch/sparc/include/mutex.h: revision 1.12
sys/arch/sparc/include/mutex.h: revision 1.13
sys/arch/usermode/include/mutex.h: revision 1.5
sys/arch/usermode/include/mutex.h: revision 1.6
sys/kern/kern_core.c: revision 1.38
usr.sbin/crash/Makefile: revision 1.49
sys/arch/amiga/include/intr.h: revision 1.23
sys/arch/alpha/include/mutex.h: revision 1.12
sys/arch/alpha/include/mutex.h: revision 1.13
sys/arch/evbarm/lubbock/sacc_obio.c: revision 1.16
sys/ddb/ddb.h: revision 1.6
sys/arch/sparc64/include/mutex.h: revision 1.8
sys/arch/sh3/include/mutex.h: revision 1.12
sys/arch/evbarm/lubbock/sacc_obio.c: revision 1.17
sys/ddb/db_syncobj.c: revision 1.1
sys/arch/vax/include/mutex.h: revision 1.18
sys/arch/sparc64/include/psl.h: revision 1.63
sys/arch/sparc64/include/mutex.h: revision 1.9
sys/arch/sh3/include/mutex.h: revision 1.13
sys/arch/evbarm/lubbock/obio.c: revision 1.13
sys/arch/atari/include/intr.h: revision 1.23
sys/ddb/db_syncobj.c: revision 1.2
sys/arch/vax/include/mutex.h: revision 1.19
sys/arch/evbarm/g42xxeb/obio.c: revision 1.14
sys/arch/evbarm/g42xxeb/obio.c: revision 1.15
sys/arch/cesfic/include/intr.h: revision 1.14
sys/ddb/db_syncobj.h: revision 1.1
sys/arch/x86/include/cpu.h: revision 1.134
sys/arch/evbarm/g42xxeb/obio.c: revision 1.16
sys/arch/cesfic/include/intr.h: revision 1.15
sys/arch/arm/xscale/pxa2x0_intr.c: revision 1.26
sys/sys/cpu_data.h: revision 1.54
sys/arch/m68k/include/mutex.h: revision 1.12
sys/arch/ia64/acpi/madt.c: revision 1.6

sys/rwlock.h: Make this more self-contained for bool.

machine/mutex.h: Sprinkle includes so this can be used by crash(8).

ddb: New `show all tstiles' command.
Shows who's waiting for which locks and what the owner is up to.

Include psl.h for ipl_cookie_t if __MUTEX_PRIVATE

sys: Rip <sys/resourcevar.h> out of <uvm/uvm_param.h>.

And thus out of <sys/param.h>, which is exceedingly overused and
fragile and delenda est.

Should fix (some) issues with the recent inclusion of machine/lock.h
in various machine/mutex.h files.

arm/mutex.h: Need machine/intr.h, machine/lock.h.

For ipl_cookie_t and __cpu_simple_lock_t.
evbarm/intr.h: Define ipl_cookie_t before including ARM_INTR_IMPL.

Otherwise arm/mutex.h doesn't work, due to a cyclic dependency which
should really be fixed.
opencrypto/cryptodev.h: Fix includes.
- Move sys/condvar.h under #ifdef _KERNEL.
- Add some other necessary includes and forward declarations.
- Sort.

hp300/intr.h: Fix missing includes.
linux/idr.h: Need <sys/mutex.h> for kmutex_t.
amiga/intr.h: Don't define spl*() functions if !_KERNEL.

This is used by crash(8) now, and what's important is ipl_cookie_t.
cesfic/intr.h: Expose ipl_cookie_t to userland for crash(8).
cesfic/intr.h: Expose ipl_cookie_t to userland only with _KMEMUSER.

Probably not necessary but let's be a little more cautious about
this.

atari/intr.h: Expose ipl_cookie_t with _KMEMUSER for crash(8).

arm/cpu.h: Need sys/param.h for COHERENCY_UNIT.

Nix machine/param.h -- not meant to be used directly, pulled in by
sys/param.h.

Move the definition of ipl_cookie_t out of the kernel-only sections,
some _KMEMUSER applications need it.

ddb: Cast pointer to uintptr_t first before db_expr_t.

hppa/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

luna68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

mvme68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

news68k/intr.h: Fix includes. Put some definitions under _KERNEL.

next68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

sys/ksem.h: Hack around fstat(8) abuse of _KERNEL.

sun68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

vax/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).

x68k/intr.h: Put functions under _KERNEL so crash(8) can use this.

Make ipl_cookie_t visible for _KMEMUSER userland applications.

fix editor mishap in previous

Explicitly include <sys/mutex.h> for kmutex_t.

Replace kmutex_t * (which may be undefined here) with struct kmutex *,
suggested by Taylor.

hp300/intr.h: Put most of this under #ifdef _KERNEL.
Only ipl_cookie_t really needs to be exposed now, for crash(8).

mac68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).
Make inclusion of sys/intr.h explicit for spl*.

fix hppa and vax builds.

machine/lock.h isn't necessary for __cpu_simple_lock_t, it's in
sys/types.h. avoids cpu_data.h vs sched.h include order issues.

move the hppa ipl_t typedef with the moved usage of it.
machine/mutex.h: Sprinkle sys/types.h, omit machine/lock.h.

Turns out machine/lock.h is not needed for __cpu_simple_lock_t, which
always comes from sys/types.h. And, really, sys/types.h (or at least
sys/stdint.h) is needed for uintN_t and uintptr_t.

ddb: Cast pointer to uintptr_t, then to db_expr_t.
Avoids warnings about conversion between pointer and integer of
different size on some architectures.

re-fix hppa builds.

this file uses __cpu_simple_lock(), not just the underlying type,
so it does need machine/lock.h.

Break cycle by using `struct kmutex *' instead of `kmutex_t *'.
sys/sched.h included sys/mutex.h
which includes sys/intr.h
which includes machine/intr.h
which on cats includes arm/footbridge/footbridge_intr.h
which includes arm/cpu.h
which includes sys/cpu_data.h
which includes sys/sched.h

But there was never any real need for sys/mutex.h in sys/sched.h,
because it only uses pointers to the opaque struct kmutex. Cycle
broken by using `struct kmutex *' instead of pulling in sys/mutex.h
for the definition of kmutex_t.

Side effect: This revealed that sys/cpu_data.h needed sys/intr.h
(which was pulled in accidentally by sys/mutex.h via sys/sched.h) for
SOFTINT_COUNT. Also revealed some other machine/cpu.h header files
were missing includes of sys/mutex.h for kmutex_t.

ia64: Need sys/types.h for u_int, vaddr_t; sys/mutex.h for kmutex_t.

explicitly include no longer implicitly included sys/mutex.h.

arm/xscale: Use sys/bitops.h fls32 - 1 instead of 31 - __builtin_clz.
Sidesteps namespace collision with `#define bits ...' in net/zlib.c.

complete the previous - there were two calls to find_first_bit() to fix.

arm/xscale: Missed a spot with previous find_first_bit commit.

evbarm/g42xxeb: Fix off-by-one in previous.

The original find_first_bit(x) was 31 - __builtin_clz((uint32_t)x),
which is equivalent to fls32(x) - 1, not to fls32(x).

Note that fls32 is 1-based and returns 0 for x=0.
 1.7 11-Dec-2005  christos merge ktrace-lwp.
 1.6 08-Jun-2005  rjs Add message definitions for SWIM and for ADB autopoll.
 1.5 15-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*.
 1.4 30-Jul-2000  briggs branches: 1.4.24;
Some uncommitted poking around. No functional change.
 1.3 21-Feb-2000  scottr Explicitly include headers needed by iopreg.h
 1.2 28-Jun-1999  briggs branches: 1.2.2; 1.2.4; 1.2.8;
Include a bit more info about what's not happening with IOP.
 1.1 28-Jun-1999  briggs 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.
 1.2.8.2 28-Jun-1999  briggs Include a bit more info about what's not happening with IOP.
 1.2.8.1 28-Jun-1999  briggs file iopreg.h was added on branch scottr-mac68k-wscons on 1999-06-28 04:33:22 +0000
 1.2.4.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.2.2.2 01-Jul-1999  thorpej Sync w/ -current.
 1.2.2.1 28-Jun-1999  thorpej file iopreg.h was added on branch chs-ubc2 on 1999-07-01 23:10:00 +0000
 1.4.24.2 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.4.24.1 17-Jan-2005  skrll Sync with HEAD.
 1.4 11-Dec-2005  christos merge ktrace-lwp.
 1.3 29-Apr-2004  fredb Protect against multiple inclusion. Lets "kdump" and "ktrace" build again
on mac68k.
 1.2 13-Oct-1997  lukem branches: 1.2.52;
rcsid fascism
 1.1 03-Dec-1994  briggs branches: 1.1.14;
Mac ROM Glue changes from grantham@tenon.com.
 1.1.14.1 14-Oct-1997  thorpej Update marc-pcmcia branch from trunk.
 1.2.52.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.2.52.2 18-Sep-2004  skrll Sync with HEAD.
 1.2.52.1 03-Aug-2004  skrll Sync with HEAD
 1.1 23-Apr-1997  scottr Implement new crash dump format. Mostly taken from hp300, extended to
support multiple physical RAM segments by me. Garbage collect functions
obsoleted by this change.
 1.6 09-Apr-1997  scottr Make C-\\ work; from Bill Studenmund, who noticed the swapped keycodes.
Closes PR #3294.
 1.5 23-Feb-1996  scottr Add ^^ and ^_ codes to default keyboard layout
 1.4 03-Dec-1994  briggs Mac ROM Glue changes from grantham@tenon.com.
 1.3 26-Oct-1994  cgd new RCS ID format.
 1.2 31-Jul-1994  lkestel branches: 1.2.2;
Added a few macros for keys; cleaned up; only define key array
ifdef KEYBOARD_ARRAY, else just declare it.
 1.1 30-Jul-1994  lkestel Moved adbsys.h grfioctl.h and keyboard.h to include to make desktop
and X compile more cleanly.
 1.2.2.2 31-Jul-1994  lkestel Added a few macros for keys; cleaned up; only define key array
ifdef KEYBOARD_ARRAY, else just declare it.
 1.2.2.1 31-Jul-1994  lkestel file keyboard.h was added on branch netbsd-1-0 on 1994-07-31 06:33:42 +0000
 1.8 28-Mar-2012  christos - Normalize inclusion protection (remove)
- Move CHAR_{MIN,MAX} to a common file.
- Fix broken comments
 1.7 09-Jan-1998  perry branches: 1.7.190; 1.7.194;
multiple include protect machine/limits.h, fixes pr 4473 (from Mika Nystrom)
 1.6 26-Oct-1994  cgd new RCS ID format.
 1.5 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.4 02-Dec-1993  briggs Add symbols for quads to limits and endian and protect endian from mult.
inclusion.
 1.3 02-Dec-1993  briggs Get rid of CLK_TCK. Theo reminds me that the value isn't
machine-dependent, which is why it's defined in time.h.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.7.194.1 05-Apr-2012  mrg sync to latest -current.
 1.7.190.1 17-Apr-2012  yamt sync with head
 1.1 29-Apr-2000  thorpej branches: 1.1.6;
Require that each each MACHINE/MACHINE_ARCH supply a lock.h. This file
contains the values __SIMPLELOCK_LOCKED and __SIMPLELOCK_UNLOCKED, which
replace the old SIMPLELOCK_LOCKED and SIMPLELOCK_UNLOCKED. These files
are also required to supply inline functions __cpu_simple_lock(),
__cpu_simple_lock_try(), and __cpu_simple_unlock() if locking is to be
supported on that platform (i.e. if MULTIPROCESSOR is defined in the
_KERNEL case). Change these functions to take an int * (&alp->lock_data)
rather than the struct simplelock * itself.

These changes make it possible for userland to use the locking primitives
by including <machine/lock.h>.
 1.1.6.2 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.1.6.1 29-Apr-2000  bouyer file lock.h was added on branch thorpej_scsipi on 2000-11-20 20:12:20 +0000
 1.1 30-Nov-2024  christos branches: 1.1.4;
Create a new header lwp_private.h to contain _lwp_getprivate_fast,
_lwp_gettcb_fast, _lwp_settcb and remove them from mcontext.h, so that:
1. we don't need special hacks to hide them
2. we can include <lwp.h> where needed to get the necessary prototypes
without redefining them locally.
 1.1.4.2 02-Aug-2025  perseant Sync with HEAD
 1.1.4.1 30-Nov-2024  perseant file lwp_private.h was added on branch perseant-exfatfs on 2025-08-02 05:55:50 +0000
 1.1 23-Dec-1999  kleink branches: 1.1.2; 1.1.8;
C99: Define a NAN macro in <math.h> which evaulates to a constant expression of
a single-precision quiet NaN; only to be defined on platforms that do support
this value.
 1.1.8.2 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.1.8.1 23-Dec-1999  bouyer file math.h was added on branch thorpej_scsipi on 2000-11-20 20:12:20 +0000
 1.1.2.2 13-Feb-2000  scottr Sync with main branch.
 1.1.2.1 23-Dec-1999  scottr file math.h was added on branch scottr-mac68k-wscons on 2000-02-13 04:17:42 +0000
 1.2 17-Jan-2003  thorpej Merge the nathanw_sa branch.
 1.1 10-Nov-2001  scw branches: 1.1.2;
file mcontext.h was initially added on branch nathanw_sa.
 1.1.2.1 10-Nov-2001  scw Kernel mcontext glue for Scheduler Activations on m68k from
Klaus Klein <kleink@netbsd.org>.
 1.3 17-Jan-1994  mycroft Clean up deleted files.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.2 09-Feb-2007  ad branches: 1.2.4;
Merge newlock2 to head.
 1.1 22-Dec-2006  ad branches: 1.1.2;
file mutex.h was initially added on branch newlock2.
 1.1.2.1 22-Dec-2006  ad Pull in CPU specific stubs.
 1.2.4.2 26-Feb-2007  yamt sync with head.
 1.2.4.1 09-Feb-2007  yamt file mutex.h was added on branch yamt-lazymbuf on 2007-02-26 09:07:17 +0000
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.2 01-Mar-1995  mycroft Clean up deleted files.
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.46 06-Jun-2019  jklos As per port-m68k/54254 and a few months of testing, mac68k will switch
to 8KB pages. OK with hauke@, rjs@ and tsutsui@.
 1.45 10-Feb-2012  para branches: 1.45.48;
proper sizing of kmem_arena on different ports

PR port-i386/45946: Kernel locks up in VMEM system
 1.44 08-Feb-2011  rmind branches: 1.44.4; 1.44.8;
Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.
 1.43 11-Dec-2009  tsutsui branches: 1.43.4; 1.43.6; 1.43.8;
Refactoring MD segment related definitions on m68k ports:
- move macro SEGSHIFT, NBSEG, and SEGOFSET from <machine/param.h>
to <m68k/pmap_motorola.h> where they should belong
- also simplify NBSEG macro for both 020/030 and 040/060 cases
- also move m68k_trunc_seg(), m68k_round_seg(), and m68k_seg_offset()
(that use SEGOFSET) from <m68k/param.h> to <m68k/pmap_motorola.h>
- add comments about each segment size value used on pmap_motorola
implementation
- add TIA_SIZE, TIA_SHIFT, TIB_SIZE, and TIB_SHIFT macro which can be
used for ste/pte index sizes
- use proper vaddr_t cast instead of unsigned for SEGOFSET/PGOFSET macro

Tested on atari, hp300, and news68k.
 1.42 09-Dec-2009  tsutsui Fix wrong NBSEG values for all hp300 pmap derived m68k ports.
They were incorrect since 1997 on amiga and atari, and since 2002
on other ports, but fortunately they don't look so fatal.

Anyway, these values will be moved into <m68k/pmap_motorola.h> soon
since they are quite pmap implementation dependent.
 1.41 11-Dec-2005  christos branches: 1.41.78;
merge ktrace-lwp.
 1.40 15-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*.
 1.39 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.38 03-Nov-2002  chs branches: 1.38.6;
merge pmap.h for all 4k-page motorola-MMU (or compatible) m68k platforms.
 1.37 20-May-2002  scottr From John Klos, originally committed to the amiga port:
Updated NKMEMPAGES_MAX_DEFAULT so that large memory systems won't crash
when allocating/deallocating lots of memory at once.
 1.36 11-Feb-2000  thorpej branches: 1.36.8; 1.36.12; 1.36.20;
Update for the NKMEMPAGES changes.
 1.35 04-Dec-1999  ragge CL* discarding.
 1.34 20-Sep-1997  leo branches: 1.34.10; 1.34.18; 1.34.24;
Move the definition of MSGBUFSIZE up to the machine-arch level if
possible. Pointed out by Bernd Ernesti.
 1.33 19-Sep-1997  leo Implement the kernel part of pr-1891. This allows for a more flexible sized
msgbuf. Note that old 'dmesg' and 'syslogd' binaries will continue running,
though old 'dmesg' binaries will output a few bytes of junk at the start of
the buffer, and will miss a few bytes at the end of the buffer.
 1.32 10-Jul-1997  veego branches: 1.32.2;
Restore the define of NPTEPG.
 1.31 10-Jun-1997  veego The 'Mach derived conversion macros' are now in <m68k/param.h>
 1.30 10-Jun-1997  veego Use the MI <m68k/param.h> include.
 1.29 13-Apr-1997  scottr Move all splxxx() and softint-related macros and prototypes to intr.h,
and include it where appropriate.
 1.28 01-Mar-1997  scottr Protect MCLSHIFT definition so users can customize MCLBYTES, from Jonathan.
 1.27 24-Feb-1997  fvdl Define ALIGNED_POINTER
 1.26 05-May-1996  briggs branches: 1.26.8;
Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.25 04-Mar-1996  cgd add _MACHINE and _MACHINE_ARCH, which are like MACHINE and MACHINE_ARCH,
execpt without quotes. meant to be __CONCAT()ted for easy #includes
of machine-dependent headers for MI code (e.g. for the MI ISA/EISA/PCI/TC
bus code).
 1.24 17-Feb-1996  briggs Move spl stuff from param.h to psl.h. Prototype delay() in param.h.
 1.23 02-Feb-1996  mycroft Fix #includes.
 1.22 13-Jan-1996  briggs Move splimp to 2 and spltty to 1.
 1.21 13-Aug-1995  briggs Document spl()s a bit, order the splfoo()s in splX() order.
 1.20 13-Aug-1995  mycroft Replace splnet() with splsoftnet(). Add splnet(). Make splimp() > spltty().
 1.19 26-Jun-1995  cgd clean up definitions of ctod(), dtoc(), ctob(), btoc(), btodb(), and
dbtob(). remove unused definitions of ctos(), stoc(), and dtob().
 1.18 21-Jun-1995  briggs Update to look more like hp300. Clean up a lot.
 1.17 22-Apr-1995  briggs Define DELAY.
 1.16 29-Mar-1995  briggs Get rid of some BARFs and assign some semi-reasonable spl()s...
 1.15 18-Mar-1995  cgd don't be so quick to cast macro arguments to unsigned; if the
arguments are really off_t's (e.g. to btodb), then you can lose
information. This was the "> 4G file systems don't work" bug; physio
uses btodb, which was broken.
 1.14 01-Nov-1994  briggs Raise MCLBYTES to 2048.
 1.13 26-Oct-1994  cgd new RCS ID format.
 1.12 16-Sep-1994  jtc asm -> __asm (PR #463).
 1.11 23-Aug-1994  briggs Add USPACE.
 1.10 06-May-1994  briggs Get things to compile with latest changes.
 1.9 21-Apr-1994  briggs '040 changes from Amiga.
Protect against multiple inclusion.
 1.8 30-Jan-1994  briggs Get rid of DELAY defines. These are bogus. There has to be a better
way. And there will be.
 1.7 15-Dec-1993  briggs Change constants and comments to reflect the current MACHINE value.
Define T_BRKPT and T_WATCHPOINT.
 1.6 06-Dec-1993  briggs Dumb typo. Must be dyslexic. Changed MACHINE_MID to MID_MACHINE.
 1.5 06-Dec-1993  briggs Move MID_MACHINE to param.h from exec.h and get rid of bogus includes.
 1.4 04-Dec-1993  briggs Change USRTEXT to 8192 in vmparam.h.
Add MACHINE_ARCH (m68k) to param.h.
 1.3 02-Dec-1993  briggs Update MACHINE to mac68k in param.h.
Update MACHINE_MID to MID_M68K -- untested.
Add __LDPGSZ as 8192 -- untested.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.26.8.1 12-Mar-1997  is Merge in changes from The Trunk, partially just reimplementing newarp.
 1.32.2.1 22-Sep-1997  thorpej Update marc-pcmcia branch from trunk.
 1.34.24.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.34.18.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.34.10.2 13-Feb-2000  scottr Sync with main branch.
 1.34.10.1 12-Dec-1999  scottr Sync with main branch.
 1.36.20.1 30-May-2002  gehenna Catch up with -current.
 1.36.12.2 11-Nov-2002  nathanw Catch up to -current
 1.36.12.1 20-Jun-2002  nathanw Catch up to -current.
 1.36.8.1 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.38.6.4 17-Jan-2005  skrll Sync with HEAD.
 1.38.6.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.38.6.2 18-Sep-2004  skrll Sync with HEAD.
 1.38.6.1 03-Aug-2004  skrll Sync with HEAD
 1.41.78.1 11-Mar-2010  yamt sync with head
 1.43.8.1 17-Feb-2011  bouyer Sync with HEAD
 1.43.6.1 06-Jun-2011  jruoho Sync with HEAD.
 1.43.4.1 05-Mar-2011  rmind sync with head
 1.44.8.1 18-Feb-2012  mrg merge to -current.
 1.44.4.1 17-Apr-2012  yamt sync with head
 1.45.48.1 10-Jun-2019  christos Sync with HEAD
 1.8 19-May-1997  scottr Use common m68k/pcb.h; noted by Erik Bertelsen <erik@sockdev.uni-c.dk>,
closes PR 3650.
 1.7 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.6 21-Jun-1995  briggs Get rid of pcb_cmap2.
 1.5 17-May-1995  briggs Make comment fit reality.
 1.4 26-Oct-1994  cgd new RCS ID format.
 1.3 26-Jun-1994  briggs Add md_coredump.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.4 24-Dec-2005  perry bare asm -> __asm
 1.3 26-Oct-1994  cgd branches: 1.3.84;
new RCS ID format.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.3.84.1 21-Jun-2006  yamt sync with head.
 1.39 18-Aug-2025  andvar Fix various typos, mainly in comments:
s/invaid/invalid/
s/instad/instead/
s/wich/with/
s/tranform/transform/
s/tranmist/transmit/
s/tranceiver/transceiver/
s/Tranparent/Transparent/
s/tranlated/translated/
s/tranfer/transfer/
s/tranmissions/transmissions/
s/condtions/conditions/
s/Recient/Recent/
 1.38 27-Dec-2023  thorpej Define values for the 68030 TT registers in terms of the definitions
in <m68k/mmu_30.h> rather than using magic numbers.
 1.37 03-Nov-2002  chs merge pmap.h for all 4k-page motorola-MMU (or compatible) m68k platforms.
 1.36 28-Oct-2002  chs untangle includes a bit:
don't include cpu.h in pmap.h, nor cacheops.h in cpu.h. instead,
include cpu.h and cacheops.h in just those .c files that need them.
 1.35 22-Sep-2002  chs it really helps to get the stub right before cutting + pasting it 27 times.
alas, I did not. doh.
 1.34 22-Sep-2002  chs add pmap_remove_all() hook (empty on most platforms so far).
 1.33 10-Sep-2001  chris branches: 1.33.4;
Update pmap_update to now take the updated pmap as an argument.
This will allow improvements to the pmaps so that they can more easily defer expensive operations, eg tlb/cache flush, til the last possible moment.

Currently this is a no-op on most platforms, so they should see no difference.

Reviewed by Jason.
 1.32 26-May-2001  chs branches: 1.32.2; 1.32.4;
replace vm_page_t with struct vm_page *.
 1.31 26-May-2001  chs replace {simple_,}lock{_data,}_t with struct {simple,}lock {,*}.
 1.30 22-Apr-2001  thorpej Undo a misguided previous change to the pmap_update() API.
 1.29 22-Apr-2001  thorpej Give pmap_update() an argument (a pmap_t) so that it knows which
pmap it should be updating.
 1.28 21-Apr-2001  thorpej #define away pmap_update() in <machine/pmap.h> so that no function
call overhead is incurred as we start sprinkling pmap_update() calls
throughout the source tree (no pmaps currently defer operations, but
we are adding the infrastructure to allow them to do so).
 1.27 28-Nov-1999  scottr branches: 1.27.6;
Sync cachectl1() implementation with other m68k ports.
 1.26 21-Jul-1999  briggs branches: 1.26.2; 1.26.8;
Declare struct pmap kernel_pmap_store extern.
 1.25 25-Feb-1999  is branches: 1.25.2; 1.25.4; 1.25.6;
mac68k part of pr 6152 fix, and missing bits for the others
 1.24 22-Dec-1998  scottr vm_offset_t -> {paddr_t, vaddr_t}
 1.23 24-Apr-1998  scottr Checkpoint of UVM work to date. This includes a fully-functioning
MACHINE_NEW_NONCONTIG interface implementation, which is now enabled
on all systems. Thanks to Jason Thorpe for his work on the hp300 port,
from which most of the code used here was derived.

XXX In spite of the fact that it works on the hp300, UVM does not (yet)
work well under load on mac68k.
 1.22 18-Feb-1998  cgd Move pmap_map() function definition to MD headers, as appropriate. It's
an internal function, and the VM system shouldn't try to prototype it.
(Note that some ports _don't_ prototype it.)
 1.21 06-Jan-1998  thorpej Garbage-collect pm_stchanged; it's not used by anything.
 1.20 06-Jan-1998  thorpej Garbage-collect use of the PCB's copy of the user segment table pointer.
 1.19 03-Jan-1998  thorpej Now that all ports have pmap_activate(), and it has an identical interface,
prototype it in <vm/pmap.h>
 1.18 01-Jan-1998  thorpej Change an argument name to PMAP_ACTIVATE() to more accurately describe the
semantics of the argument.
 1.17 01-Jan-1998  thorpej - Make pmap_activate() and pmap_deactivate() take a struct proc *.
- Define active_user_pmap() and use it in the appropriate places (from hp300
port).
 1.16 10-Jun-1997  veego s/mac68k_btop/m68k_btop/
 1.15 20-May-1997  scottr Adjust for previous m68k/pcb.h change
 1.14 02-Feb-1997  scottr copypage() is now declared in m68k/cpu.h
 1.13 18-May-1996  briggs Fixup a few prototypes and put 'em in their place.
 1.12 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.11 24-Jun-1995  briggs pmap_page_index isn't a macro.
 1.10 21-Jun-1995  briggs Cleanup some and make these look more like hp300 versions.
 1.9 10-Apr-1995  mycroft Bring back pmap_kernel(), for now always inlined as a pointer to
kernel_pmap_store.
 1.8 23-Mar-1995  briggs KERNEL -> _KERNEL
 1.7 26-Oct-1994  cgd new RCS ID format.
 1.6 31-Jul-1994  lkestel Different pa_index() ifdef MACHINE_NONCONTIG.
 1.5 26-Jun-1994  briggs branches: 1.5.2;
Fix warnings...
 1.4 21-Apr-1994  briggs '040 changes from Amiga.
 1.3 15-Dec-1993  briggs Change constants and comments to reflect the current MACHINE value.
Define T_BRKPT and T_WATCHPOINT.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.5.2.1 11-Aug-1994  mycroft update from trunk
 1.25.6.1 02-Aug-1999  thorpej Update from trunk.
 1.25.4.1 29-Nov-1999  he Pull up revision 1.27 (reqyested by scottr):
Fix i-cache/d-cache synchronization for M68040 cpus (see M68040
UM p.4-10). Makes regress/sys/kern/sigtramp work even on M68040.
 1.25.2.2 28-Nov-1999  scottr Sync with main branch.
 1.25.2.1 01-Nov-1999  scottr Sync with main branch.
 1.26.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.26.2.2 23-Apr-2001  bouyer Sync with HEAD.
 1.26.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.27.6.1 21-Jun-2001  nathanw Catch up to -current.
 1.32.4.1 01-Oct-2001  fvdl Catch up with -current.
 1.32.2.2 10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.32.2.1 13-Sep-2001  thorpej Update the kqueue branch to HEAD.
 1.33.4.6 11-Nov-2002  nathanw Catch up to -current
 1.33.4.5 18-Oct-2002  nathanw Catch up to -current.
 1.33.4.4 02-Jul-2002  nathanw Adjust whitespace so that this matches the trunk.
 1.33.4.3 24-Jun-2002  nathanw Curproc->curlwp renaming.

Change uses of "curproc->l_proc" back to "curproc", which is more like the
original use. Bare uses of "curproc" are now "curlwp".

"curproc" is now #defined in proc.h as ((curlwp) ? (curlwp)->l_proc) : NULL)
so that it is always safe to reference curproc (*de*referencing curproc
is another story, but that's always been true).
 1.33.4.2 18-Nov-2001  scw MD Scheduler Activation bits for Mac68k.

XXX: I'm unable to even compile-test these changes since Mac68k hasn't
XXX: transitioned to ELF, and I don't have a -current m68k a.out toolchain
XXX: handy.
 1.33.4.1 10-Sep-2001  scw file pmap.h was added on branch nathanw_sa on 2001-11-18 18:12:01 +0000
 1.2 12-Jul-2018  maxv Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.
 1.1 07-Aug-2002  briggs branches: 1.1.2; 1.1.4; 1.1.6; 1.1.202; 1.1.204;
Implement pmc(9) -- An interface to hardware performance monitoring
counters. These counters do not exist on all CPUs, but where they
do exist, can be used for counting events such as dcache misses that
would otherwise be difficult or impossible to instrument by code
inspection or hardware simulation.

pmc(9) is meant to be a general interface. Initially, the Intel XScale
counters are the only ones supported.
 1.1.204.1 10-Jun-2019  christos Sync with HEAD
 1.1.202.1 28-Jul-2018  pgoyette Sync with HEAD
 1.1.6.2 06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.1.6.1 07-Aug-2002  jdolecek file pmc.h was added on branch kqueue on 2002-09-06 08:36:54 +0000
 1.1.4.2 31-Aug-2002  gehenna catch up with -current.
 1.1.4.1 07-Aug-2002  gehenna file pmc.h was added on branch gehenna-devsw on 2002-08-31 13:45:03 +0000
 1.1.2.2 13-Aug-2002  nathanw Catch up to -current.
 1.1.2.1 07-Aug-2002  nathanw file pmc.h was added on branch nathanw_sa on 2002-08-13 02:18:27 +0000
 1.7 13-Jul-2002  scw m68k syscall rototill:

- Switch all m68k-based ports over to __HAVE_SYSCALL_INTERN.
- Add systrace glue.
- Define struct mdproc in <m68k/proc.h> instead of <machine/proc.h>.
(They were all defined exactly the same anyway, other than a couple
of the MDP_* flags.)
 1.6 11-Jun-1997  kleink branches: 1.6.38; 1.6.42; 1.6.50;
GC obsolete MDP_AST flag.
 1.5 26-Oct-1994  cgd new RCS ID format.
 1.4 06-May-1994  briggs Get things to compile with latest changes.
 1.3 27-Feb-1994  briggs Add MDP_STACKADJ for compat_sunos.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.6.50.1 16-Jul-2002  gehenna catch up with -current.
 1.6.42.2 01-Aug-2002  nathanw Catch up to -current.
 1.6.42.1 18-Nov-2001  scw MD Scheduler Activation bits for Mac68k.

XXX: I'm unable to even compile-test these changes since Mac68k hasn't
XXX: transitioned to ELF, and I don't have a -current m68k a.out toolchain
XXX: handy.
 1.6.38.1 06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.4 31-Aug-2001  simonb branches: 1.4.6;
Use comments around the token after a #endif.
 1.3 05-May-1996  briggs branches: 1.3.46;
Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.2 26-Oct-1994  cgd new RCS ID format.
 1.1 23-May-1994  briggs Copied from Amiga. Just include m68k/profile.h.
 1.3.46.1 13-Sep-2001  thorpej Update the kqueue branch to HEAD.
 1.4.6.2 31-Aug-2001  simonb Use comments around the token after a #endif.
 1.4.6.1 31-Aug-2001  simonb file profile.h was added on branch nathanw_sa on 2001-08-31 04:44:57 +0000
 1.8 23-Jul-2019  rin PR port-mac68k/24883

Support DMA xfer for SCSI adapter of AV Mac (660/840AV), written by
Michael Zucca.

This improves disk I/O performance by nearly one order of magnitude.
In addition, interrupt storm due to heavy disk PIO is resolved.

I'm deeply grateful to Michael Zucca for his analysis of DMA engine
and submission of PR. I also thank Izumi Tsutsui (useful comments on
port-mac68k@) and Martin Husemann (test on 660AV).
 1.7 11-Dec-2005  christos branches: 1.7.166;
merge ktrace-lwp.
 1.6 15-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*.
 1.5 26-Mar-2004  wiz Update David Huang's email address in the license
per his request in PR 24907.
 1.4 28-Jun-1999  briggs branches: 1.4.36;
Add some constants from Linux/mac68k to note SCC, floppy, and SCSI registers.
Add some code, inspired by Linux/mac68k, to shutdown all DMA on the PSC
at startup and to disable and clear all interrupts except the SCC.
 1.3 24-Apr-1998  scottr branches: 1.3.8; 1.3.12;
Checkpoint of UVM work to date. This includes a fully-functioning
MACHINE_NEW_NONCONTIG interface implementation, which is now enabled
on all systems. Thanks to Jason Thorpe for his work on the hp300 port,
from which most of the code used here was derived.

XXX In spite of the fact that it works on the hp300, UVM does not (yet)
work well under load on mac68k.
 1.2 07-Nov-1997  briggs NetBSD RCSIds.
 1.1 04-Nov-1997  briggs branches: 1.1.2;
Add in the if_mc ethernet driver for the AMD "MACE" part. This is the
internal ethernet on the Quadra/Centris 660av/840av.
Add initial support for the PSC (DMA controller) to support the above
(DMA SCSI remains unsupported). This involved also changing the way
that several interrupts are handled.
Above from David Huang <khym@bga.com>
Since the interrupts changed somewhat, we must also make the ipls
dynamic, defaulting to their prior levels and adjusted for the AVs.
I modelled this on the hp300.
 1.1.2.2 12-Nov-1997  mellon Pull rev 1.2 up from trunk (briggs)
 1.1.2.1 04-Nov-1997  mellon file psc.h was added on branch netbsd-1-3 on 1997-11-12 02:16:42 +0000
 1.3.12.1 01-Jul-1999  thorpej Sync w/ -current.
 1.3.8.1 01-Nov-1999  scottr Sync with main branch.
 1.4.36.4 17-Jan-2005  skrll Sync with HEAD.
 1.4.36.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.4.36.2 18-Sep-2004  skrll Sync with HEAD.
 1.4.36.1 03-Aug-2004  skrll Sync with HEAD
 1.7.166.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.13 13-Apr-1997  scottr Move all splxxx() and softint-related macros and prototypes to intr.h,
and include it where appropriate.
 1.12 12-Sep-1996  scottr Define spladb() (conservatively, at least for now).
 1.11 21-Jun-1996  briggs Move splimp back to spl2 (from spl4).
 1.10 14-Jun-1996  scottr raise splimp() to spl4(); we need to block zs interrupts, too.
 1.9 19-May-1996  briggs branches: 1.9.4;
Ooops. cut 'n' pasto. splzs should 4, not 2.
 1.8 18-May-1996  briggs Serial driver with interface to a slightly modified version of the machine-
independent z8530 driver. When that driver is updated, the local copy
of those files may be removed. From Bill Studenmund.
Compiler warnings fixed by me.
 1.7 06-May-1996  scottr Update several comments.
 1.6 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.5 17-Feb-1996  briggs Move spl stuff from param.h to psl.h. Prototype delay() in param.h.
 1.4 26-Oct-1994  cgd new RCS ID format.
 1.3 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.9.4.2 25-Jun-1996  jtc Pulled up from rev 1.11 by request from Allen Briggs
 1.9.4.1 14-Jun-1996  scottr Pull up from trunk:
>1.10: raise splimp() to spl4(); we need to block zs interrupts, too.
 1.11 14-Oct-2002  chs merge pte.h for m68k w/ motorola or compatible MMU
(only 4k-page platforms so far).
 1.10 12-Dec-1999  scottr branches: 1.10.12;
Replace references to PGOFSET with m68k_trunc_page() and m68k_page_offset(),
as appropriate.
 1.9 05-May-1996  briggs branches: 1.9.24; 1.9.32; 1.9.38;
Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.8 21-Jun-1995  briggs Cleanup some and make these look more like hp300 versions.
 1.7 26-Oct-1994  cgd new RCS ID format.
 1.6 29-Jun-1994  briggs Oops. w/ 4k pages, PTSIZE is larger.
 1.5 26-Jun-1994  briggs PG_CC -> PG_CCB
 1.4 21-Apr-1994  briggs Add '040 stuff from Amiga pte.h.
Also protect against multiple inclusion.
 1.3 22-Feb-1994  briggs Moved PTBASE from 60000000 to 60100000 for PowerBooks. From grantham.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.9.38.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.9.32.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.9.24.1 12-Dec-1999  scottr Sync with main branch.
 1.10.12.1 18-Oct-2002  nathanw Catch up to -current.
 1.2 26-Oct-1994  cgd new RCS ID format.
 1.1 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.13 11-Dec-2005  christos merge ktrace-lwp.
 1.12 22-Sep-2003  cl SA_SIGINFO support for m68k (port specific changes)
 1.11 09-Apr-1997  thorpej branches: 1.11.58;
regdump() is prototyped in m68k/cpu.h now
 1.10 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.9 26-Oct-1994  cgd new RCS ID format.
 1.8 27-Jan-1994  cgd HP300 -> MACHINE
 1.7 08-Jan-1994  cgd stubs which pint to m68k include
 1.6 06-Jan-1994  mycroft Still need old #defines for now.
 1.5 06-Jan-1994  mycroft Implement `struct reg'.
 1.4 08-Dec-1993  mycroft Move #define of NIPCREG outside #fidef.
 1.3 02-Sep-1993  mycroft Ditto.
 1.2 22-May-1993  cgd add rcsids to everything and clean up headers
 1.1 13-May-1993  cgd branches: 1.1.1;
Initial revision
 1.1.1.1 13-May-1993  cgd add hp300 kernel files. generic kernel files might need some help...
 1.11.58.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.11.58.2 18-Sep-2004  skrll Sync with HEAD.
 1.11.58.1 03-Aug-2004  skrll Sync with HEAD
 1.2 09-Feb-2007  ad branches: 1.2.4;
Merge newlock2 to head.
 1.1 22-Dec-2006  ad branches: 1.1.2;
file rwlock.h was initially added on branch newlock2.
 1.1.2.1 22-Dec-2006  ad Pull in CPU specific stubs.
 1.2.4.2 26-Feb-2007  yamt sync with head.
 1.2.4.1 09-Feb-2007  yamt file rwlock.h was added on branch yamt-lazymbuf on 2007-02-26 09:07:17 +0000
 1.6 15-Nov-1996  briggs Remove scsi96 driver.
 1.5 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.4 26-Oct-1994  cgd new RCS ID format.
 1.3 08-Jul-1994  briggs Add a constant for masking off the scsi phase from the status register.
 1.2 07-Jul-1994  briggs branches: 1.2.2;
Apparently the registers for the NCR 53c96 in the mac are laid out
the same as they arefor the 5380--15 bytes of padding between each
reg. Define a structure for that here, now.
 1.1 26-Jun-1994  briggs First pass at a header file for the NCR 53C96 driver (still under
construction).
 1.2.2.2 24-Jul-1994  cgd update, as requested by briggs
 1.2.2.1 07-Jul-1994  cgd file scsi96reg.h was added on branch netbsd-1-0 on 1994-07-24 01:23:24 +0000
 1.6 03-May-2003  wiz DMA, not dma nor Dma.
 1.5 12-Apr-1999  pk Quote "AS IS" as in the majority of Carnegy Mellon notices.
 1.4 06-Apr-1999  pk Fix a pasto in copyright text which has been procreating like rabbits..
 1.3 26-Oct-1994  cgd branches: 1.3.26; 1.3.28;
new RCS ID format.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.3.28.2 12-Apr-1999  pk branches: 1.3.28.2.2;
Pullup copyright text corrections.
 1.3.28.1 07-Apr-1999  pk Pull up from trunk: copyright text warts.
 1.3.28.2.2.1 21-Jun-1999  thorpej Sync w/ -current.
 1.3.26.1 16-May-1999  scottr Sync with main branch.
 1.1 20-Dec-1994  cgd make the definition of _JBLEN mach. dep. header-dependent.
 1.3 26-Oct-1994  cgd new RCS ID format.
 1.2 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.1 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.7 17-Jul-2011  joerg Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.
 1.6 22-Jan-1999  mycroft Standardize format.
 1.5 26-Oct-1994  cgd new RCS ID format.
 1.4 15-Oct-1994  cgd make <stdarg.h> a symlink, and clean up ports' stdarg.h and varargs.h files.
 1.3 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.2 11-Dec-2005  christos branches: 1.2.18;
merge ktrace-lwp.
 1.1 11-Jul-2005  christos branches: 1.1.6;
Add m68k sunos_machdep.h
 1.1.6.2 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.1.6.1 11-Jul-2005  skrll file sunos_machdep.h was added on branch ktrace-lwp on 2005-11-10 13:57:13 +0000
 1.2.18.2 21-Jun-2006  yamt sync with head.
 1.2.18.1 11-Dec-2005  yamt file sunos_machdep.h was added on branch yamt-lazymbuf on 2006-06-21 14:53:13 +0000
 1.4 19-Dec-2018  maxv Remove compat_svr4 and compat_svr4_32, as discussed on tech-kern@ recently,
but also as discussed several times in the past.
 1.3 09-Nov-1999  kleink branches: 1.3.40; 1.3.218;
Rip protection against multiple inclusion from wrapper headers.
 1.2 29-Apr-1999  kleink branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8; 1.2.12;
Pull in the right generic m68k header. (Where was my mind?)
 1.1 19-Apr-1999  kleink Add COMPAT_SVR4 for m68k.
 1.2.12.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.2.8.1 15-Nov-1999  fvdl Sync with -current
 1.2.6.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.2.4.1 21-Jun-1999  thorpej Sync w/ -current.
 1.2.2.3 28-Nov-1999  scottr Sync with main branch.
 1.2.2.2 16-May-1999  scottr Sync with main branch.
 1.2.2.1 29-Apr-1999  scottr file svr4_machdep.h was added on branch scottr-mac68k-wscons on 1999-05-16 22:38:10 +0000
 1.3.218.1 10-Jun-2019  christos Sync with HEAD
 1.3.40.1 26-Dec-2018  pgoyette Sync with HEAD, resolve a few conflicts
 1.5 26-Oct-1994  cgd new RCS ID format.
 1.4 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.3 15-Dec-1993  briggs Change constants and comments to reflect the current MACHINE value.
Define T_BRKPT and T_WATCHPOINT.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.21 01-Apr-2021  simonb Define __HAVE_LEGACY_INTRCNT to indicate this port uses legacy intrcnt
interrupt accounting.
 1.20 20-Jan-2008  joerg branches: 1.20.110; 1.20.112;
Now that __HAVE_TIMECOUNTER and __HAVE_GENERIC_TODR are invariants,
remove the conditionals and the code associated with the undef case.
 1.19 17-Oct-2007  garbled branches: 1.19.2; 1.19.8;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.
 1.18 14-Jul-2007  ad branches: 1.18.10;
Generic soft interrupts are mandatory.
 1.17 08-Mar-2007  tsutsui branches: 1.17.2; 1.17.10;
MI softintr(9)'fy.
Probably problematic, but LC630 is running at single user.
 1.16 20-Nov-2006  hauke branches: 1.16.4;
Add Timecounter support for mac68k, using the otherwise idle second
timer of VIA1. Passes regression/sys/kern/time regression test.

While we are here, GC leftover prototypes from MI todr integration,
and clean up clockreg.h in the light of "Guide to the Macintosh
Hardware" information.

(Reviewed and okayed by Martin Husemann)
 1.15 20-Sep-2006  gdamore Convert mac68k to generic todr. Thanks to Robert Swindells for testing.
 1.14 11-Dec-2005  christos branches: 1.14.20; 1.14.22;
merge ktrace-lwp.
 1.13 19-Jan-2005  chs branches: 1.13.8;
mac68k no longer abuses cf_unit.
 1.12 28-Feb-2002  simonb branches: 1.12.16; 1.12.24;
Use "#define<tab>".
 1.11 05-Feb-2000  cgd branches: 1.11.8; 1.11.12;
add __BROKEN_CONFIG_UNIT_USAGE #define, becuase these ports do very
wrong things with device configuration data "cf_unit" information.
 1.10 17-Dec-1996  scottr branches: 1.10.22; 1.10.30;
Remove __BROKEN_INDIRECT_CONFIG, since we are no longer broken.
 1.9 05-Dec-1996  cgd First step inn removing config_scan() and the hacks that gave devices
on indirect-config busses a (permanent) softc that they could share
between 'match' and 'attach' routines:

Define __BROKEN_INDIRECT_CONFIG so that old autoconfiguration
interfaces are used, until drivers are converted to use the new
interfaces (actually, converted back to use the _older_ interfaces)
which prohibit indirect configuration devices from receiving a softc
in their match routine that they can share with their attach routine.
 1.8 05-May-1996  briggs Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.7 01-Jul-1995  briggs Remove this define--we're using the new dump type.
 1.6 26-Jun-1995  cgd define __BDEVSW_DUMP_OLD_TYPE for ports where it's true. clean up
some m68k ports inclusion of common header.
 1.5 26-Oct-1994  cgd new RCS ID format.
 1.4 14-Mar-1994  cgd add comment for consistency.
 1.3 10-Jan-1994  briggs Fixup to use m68k headers, now. Thanks, Chris.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.10.30.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.10.22.1 13-Feb-2000  scottr Sync with main branch.
 1.11.12.1 01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.11.8.1 16-Mar-2002  jdolecek Catch up with -current.
 1.12.24.1 29-Apr-2005  kent sync with -current
 1.12.16.1 24-Jan-2005  skrll Sync with HEAD.
 1.13.8.2 21-Jan-2008  yamt sync with head
 1.13.8.1 30-Dec-2006  yamt sync with head.
 1.14.22.2 10-Dec-2006  yamt sync with head.
 1.14.22.1 22-Oct-2006  yamt sync with head
 1.14.20.2 12-Jan-2007  ad Sync with head.
 1.14.20.1 18-Nov-2006  ad Sync with head.
 1.16.4.1 12-Mar-2007  rmind Sync with HEAD.
 1.17.10.1 03-Oct-2007  garbled Sync with HEAD
 1.17.2.1 15-Jul-2007  ad Sync with head.
 1.18.10.2 23-Mar-2008  matt sync with HEAD
 1.18.10.1 06-Nov-2007  matt sync with HEAD
 1.19.8.1 23-Jan-2008  bouyer Sync with HEAD.
 1.19.2.1 18-Feb-2008  mjf Sync with HEAD.
 1.20.112.1 03-Apr-2021  thorpej Sync with HEAD.
 1.20.110.1 03-Apr-2021  thorpej Sync with HEAD.
 1.3 17-Jul-2011  joerg Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.
 1.2 26-Oct-1994  cgd new RCS ID format.
 1.1 27-Jan-1994  mycroft Pointer to common version.
 1.14 11-Dec-2005  christos merge ktrace-lwp.
 1.13 15-Jan-2005  chs de-__P, remove register, ansify, b* -> mem*.
 1.12 28-Jun-1999  briggs branches: 1.12.36;
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.
 1.11 20-Feb-1999  scottr branches: 1.11.2; 1.11.6;
Rename via_shutdown() to via_powerdown() for clarity and consistency.
 1.10 06-Jan-1999  scottr Update video-related RBV constants to reflect reality.
 1.9 06-Jan-1999  scottr G/C rbv_vidstatus() and related constant.
 1.8 25-Apr-1998  scottr Garbage collect the second (slot number) parameter to NuBus interrupt
handlers. (Only slot_ignore() and slot_noint() need this, and we already
have a place to put this information.) Adjust add_nubus_intr() so that if
the client_data arg is specified as NULL, pass the slot number as
client_data to the interrupt handler.
 1.7 10-Sep-1997  scottr For consistency: VIA_initialize() -> via_init()
 1.6 28-Feb-1997  scottr branches: 1.6.4;
Generalize VIA1 and VIA2 interrupt registration a bit, and do a slight
optimization on the VIA interrupt handlers.
 1.5 29-Oct-1996  briggs branches: 1.5.6;
Add prototype for mac68k_register_scsi_b_irq().
 1.4 07-Jun-1996  briggs Changes from Bill Studenmund to support external clocks on the modem port.
 1.3 05-May-1996  briggs branches: 1.3.4;
Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.
 1.2 04-Apr-1996  scottr Add v2IRQ0 define for IIci-style internal video.
 1.1 29-Mar-1996  briggs via.h -> machine/viareg.h.
 1.3.4.1 07-Jun-1996  briggs Pull up changes from trunk. Console fix and external serial clock support.
 1.5.6.1 12-Mar-1997  is Merge in changes from The Trunk, partially just reimplementing newarp.
 1.6.4.1 16-Sep-1997  thorpej Update marc-pcmcia branch from trunk.
 1.11.6.1 01-Jul-1999  thorpej Sync w/ -current.
 1.11.2.1 01-Nov-1999  scottr Sync with main branch.
 1.12.36.1 17-Jan-2005  skrll Sync with HEAD.
 1.3 28-Apr-2008  martin Remove clause 3 and 4 from TNF licenses
 1.2 29-Aug-2007  jmmv branches: 1.2.2; 1.2.4; 1.2.6; 1.2.10; 1.2.16; 1.2.30; 1.2.32; 1.2.34;
Pack all global video-related variables into a structure for clarity.

A comment said that they weren't in a struct for speed reasons but...
this should not affect performance because these variables are mostly
used to set other variables (hence they are read few times).
 1.1 29-Aug-2007  jmmv Move the definition of multiple video-related variables into a new
header file (machine/video.h) so that we can kill all the "manual"
externs spread around the code (which were inconsistent among them).
 1.2.34.1 16-May-2008  yamt sync with head.
 1.2.32.1 18-May-2008  yamt sync with head.
 1.2.30.1 02-Jun-2008  mjf Sync with HEAD.
 1.2.16.2 06-Nov-2007  matt sync with HEAD
 1.2.16.1 29-Aug-2007  matt file video.h was added on branch matt-armv6 on 2007-11-06 23:18:20 +0000
 1.2.10.2 09-Oct-2007  ad Sync with head.
 1.2.10.1 29-Aug-2007  ad file video.h was added on branch vmlocking on 2007-10-09 13:38:06 +0000
 1.2.6.2 03-Sep-2007  jmcneill Sync with HEAD.
 1.2.6.1 29-Aug-2007  jmcneill file video.h was added on branch jmcneill-pm on 2007-09-03 16:47:29 +0000
 1.2.4.2 03-Sep-2007  yamt sync with head.
 1.2.4.1 29-Aug-2007  yamt file video.h was added on branch yamt-lazymbuf on 2007-09-03 14:27:23 +0000
 1.2.2.2 03-Sep-2007  skrll Sync with HEAD.
 1.2.2.1 29-Aug-2007  skrll file video.h was added on branch nick-csl-alignment on 2007-09-03 10:19:09 +0000
 1.46 01-Feb-2020  tsutsui Add MAX/MIN PAGE_SIZE and PAGE_SHIFT definitions of m68k for jemalloc(3).

Background:
- All m68k ports have fixed PAGE_SIZE value in their kernels,
but each port uses different PAGE_SIZE value (4096 or 8192)
due to historical reasons.
- Currently module(7) binaries are built per each port so
all m68k kernel sources don't support run-time variable PAGE_SIZE.
- MI <uvm/uvm_param.h> assumes that the port supports a variable
PAGE_SIZE on module(7) builds if both MAX_PAGE_SIZE and MIN_PAGE_SIZE
are defined and they have different values.
- On the other hand, jemalloc(3) checks MAX_PAGE_SHIFT in
src/external/bsd/jemalloc/include/jemalloc/internal/jemalloc_internal_defs.h
for internal optimization.
- m68k ports share userland binaries (especially pkgsrc binaries)
among all ports, so we need to define MAX_PAGE_SHIFT as 13 to
support m68k ports where PAGE_SIZE==8192.
(though this would affect only if static binaries built on
4k page hosts are executed on 8k page hosts)

To solve these inconsistency on PAGE_SIZE definitions,
we should have an independent PAGE_SIZE related definitions
for userland, but it requires major reorganization.
For now (especially for netbsd-9) we define MAX/MIN PAGE_SIZE and
PAGE_SHIFT values in <m68k/vmparam.h> only in !defined(_KERNEL) case.

Discussed on source-changes-d@ and tech-kern@ with christos@ and thorpej@:
https://mail-index.netbsd.org/source-changes-d/2020/01/thread1.html#012035
https://mail-index.netbsd.org/tech-kern/2020/01/thread1.html#025954

Should be pulled up to netbsd-9.
 1.45 28-Jun-2019  tsutsui branches: 1.45.2; 1.45.4;
Fix lingering page size comments.

Pointed out by christos@ on port-m68k@:
http://mail-index.netbsd.org/port-m68k/2019/06/06/msg000726.html

XXX: we also need MAX_PAGE_SIZE in somewhere for newer jemalloc?
 1.44 02-Feb-2017  rin branches: 1.44.14;
PR port-mac68k/51923
Bump default MAXTSIZ to 32MB for m68k ports, which allos us to use GCC 5.4 on
GENERIC kernels.
Ok jklos
 1.43 02-Feb-2017  rin PR port-mac68k/51923
Remove unused SYSPTSIZE and USRPTSIZE from m68k ports.
Ok jklos
 1.42 08-Feb-2011  rmind branches: 1.42.14; 1.42.32; 1.42.36; 1.42.40;
Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.
 1.41 06-Nov-2010  uebayasi branches: 1.41.2; 1.41.4;
Remove incomplete, never worked dynamic run-time memory registration
(uvm_page_physload(9)). This functionality will be re-added later.
 1.40 08-Dec-2009  tsutsui branches: 1.40.2; 1.40.4;
Use PGSHIFT from <machine/param.h> for PAGE_SHIFT.
We can assume PGSHIFT is always constant on current
m68k pmap_motorola implementation.
Also fix some leftover HP300 comments on some ports.
 1.39 26-Aug-2009  thorpej Minor tweak to the pv_table management in the Hibler-derived m68k pmaps:
The head of the list is now a pv_header, which contains the first pv_entry
as well as a 16-bit attributes field (replaces the pmap_attributes array
plus the pv_entry::pv_flags field) as a 16-bit count of caller-specified
cache-inhibited mappings.

Tested on hp300 (shared pmap_motorola.c), changes to atari and amiga copies
are purely mechanical.
 1.38 06-Mar-2009  joerg Remove SHMMAXPGS from all kernel configs. Dynamically compute the
initial limit as 1/4 of the physical memory. Ensure the limit is at
least 1024 pages, the old default on most platforms.
 1.37 10-Jan-2009  tsutsui branches: 1.37.2;
Remove unnecessary "last kernel PT page" mapping.
The lkptpa was required for hp300 (where PA != VA)
to prepare a page PA == VA to turn on the MMU,
and it is not needed for mac68k which has PA == VA
mappings even in kernel text/data/bss. Tested on LC630.
 1.36 11-Dec-2005  christos branches: 1.36.74; 1.36.78; 1.36.86;
merge ktrace-lwp.
 1.35 01-Apr-2005  yamt merge yamt-km branch.
- don't use managed mappings/backing objects for wired memory allocations.
save some resources like pv_entry. also fix (most of) PR/27030.
- simplify kernel memory management API.
- simplify pmap bootstrap of some ports.
- some related cleanups.
 1.34 07-Aug-2003  agc branches: 1.34.8; 1.34.10;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.33 02-Apr-2003  thorpej branches: 1.33.2;
Use PAGE_SIZE rather than NBPG.
 1.32 10-Dec-2002  thorpej Use __LDPGSZ (which must be == USRTEXT) as the text address for a.out
executables, and eliminate the USRTEXT constant, which was only used
by the a.out exec code.
 1.31 15-Nov-2001  soren MAXSLP is defined to be a machine-independent scheduling parameter,
so move it into sys/param.h.
 1.30 01-May-2001  thorpej branches: 1.30.2; 1.30.8;
Per discussion w/ chuck and chuck, restructure the md page stuff
to use a structure called "vm_page_md", and use __HAVE_VM_PAGE_MD
and __HAVE_PMAP_PHYSSEG.
 1.29 29-Apr-2001  thorpej Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for
each vm_page structure. Add a VM_MDPAGE_INIT() macro to init this
data when pages are initialized by UVM. These macros are mandatory,
but ports may #define them to nothing if they are not needed/used.

This deprecates struct pmap_physseg. As a transitional measure,
allow a port to #define PMAP_PHYSSEG so that it can continue to
use it until its pmap is converted to use VM_MDPAGE_MEMBERS.

Use all this stuff to eliminate a lot of extra work in the Alpha
pmap module (it's smaller and faster now). Changes to other pmap
modules will follow.
 1.28 01-Dec-2000  tsutsui branches: 1.28.2;
Remove unused pcbb() macro.
 1.27 14-Nov-2000  thorpej We use 4K pages on the mac68k. Make PAGE_SIZE and friends into
compile-time constants.
 1.26 11-Feb-2000  thorpej Update for the NKMEMPAGES changes.
 1.25 27-Jan-2000  tsutsui Revert (accidentally removed) MAXSLP macro.
 1.24 26-Jan-2000  tsutsui Remove obsoleted macros.
 1.23 04-Dec-1999  ragge CL* discarding.
 1.22 26-Apr-1999  thorpej branches: 1.22.2; 1.22.8;
Garbage-collect the VM_MBUF_SIZE constant. Instead, use the size
(nmbclusters * mclbytes), so that the right amount of KVA space is
allocated if those variables are patched.
 1.21 07-Apr-1999  scottr vm_size_t -> vsize_t
 1.20 31-Mar-1999  scottr branches: 1.20.4;
The last change wasn't quite enough to build libc during a 'make build'.
Bump DFLDSIZ, too.
 1.19 31-Mar-1999  scottr Bump DFLSSIZ so that we can build libc.so.*, and limit MAXSSIZ independently
of MAXDSIZ.
 1.18 16-Jan-1999  chuck branches: 1.18.2;
MNN is no longer an option
 1.17 22-Dec-1998  scottr vm_offset_t -> {paddr_t, vaddr_t}
 1.16 08-Jul-1998  thorpej Define one page free list, and put all pages on it.
 1.15 26-Apr-1998  scottr GC the old MACHINE_NONCONTIG code.
 1.14 26-Apr-1998  scottr Use VM_PSTRAT_BIGFIRST, and add a comment explaining the decision.
 1.13 25-Apr-1998  scottr Missed removal of MACHINE_NONCONTIG. Pointed out by Allen.
 1.12 24-Apr-1998  scottr Checkpoint of UVM work to date. This includes a fully-functioning
MACHINE_NEW_NONCONTIG interface implementation, which is now enabled
on all systems. Thanks to Jason Thorpe for his work on the hp300 port,
from which most of the code used here was derived.

XXX In spite of the fact that it works on the hp300, UVM does not (yet)
work well under load on mac68k.
 1.11 23-Jul-1997  scottr GC unused MMSEG definition, from Erik Bertelsen <erik@erik-be.uni-c.dk>.
Closes PR 3898.
 1.10 12-Jul-1997  perry update comment from 1981 on memory and disk prices -- pr-2754 from Curt Sampson
 1.9 12-Jun-1997  mrg bring mrg-vm-swap2 onto mainilne.
 1.8 15-Nov-1996  briggs branches: 1.8.4; 1.8.8;
Include MACHINE_NONCONTIG here. It isn't needed on all macs, but it has been
used for all macs for quite some time.
 1.7 21-Jun-1995  briggs Raise MAXTSIZ, double DFLDSIZ and quadruple MAXDSIZ. Lower USRPTSIZE.
Remove unused mapin() macro. Update VM_MAX* macros to look like the
amiga's (easier to read than hp300's).
 1.6 26-Oct-1994  cgd new RCS ID format.
 1.5 26-Jun-1994  briggs Cleanup some. Deprecate a few defines that are no longer needed.
 1.4 15-Dec-1993  briggs Change constants and comments to reflect the current MACHINE value.
Define T_BRKPT and T_WATCHPOINT.
 1.3 04-Dec-1993  briggs Change USRTEXT to 8192 in vmparam.h.
Add MACHINE_ARCH (m68k) to param.h.
 1.2 29-Nov-1993  briggs Added signal.h for -current. The rest is formatting changes.
 1.1 29-Sep-1993  briggs branches: 1.1.1;
Initial revision
 1.1.1.1 29-Sep-1993  briggs The current MacBSD architecture sub-directory for NetBSD-0.9--more or
less. It needs some help to get to be -current. Support for minimal
hardware on the SE/30, II, IIx, and IIcx exists.
 1.8.8.1 04-May-1997  mrg re-merge mrg-vm-swap into -current, and call it mrg-vm-swap2.
 1.8.4.1 12-Feb-1997  mrg initial work for dynamic swap additions.
 1.18.2.3 13-Feb-2000  scottr Sync with main branch.
 1.18.2.2 12-Dec-1999  scottr Sync with main branch.
 1.18.2.1 16-May-1999  scottr Sync with main branch.
 1.20.4.2 06-Aug-1999  chs take an initial guess at UBC parameters.
 1.20.4.1 21-Jun-1999  thorpej Sync w/ -current.
 1.22.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.22.2.3 08-Dec-2000  bouyer Sync with HEAD.
 1.22.2.2 22-Nov-2000  bouyer Sync with HEAD.
 1.22.2.1 20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.28.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.30.8.3 11-Dec-2002  thorpej Sync with HEAD.
 1.30.8.2 08-Jan-2002  nathanw Catch up to -current.
 1.30.8.1 01-May-2001  nathanw file vmparam.h was added on branch nathanw_sa on 2002-01-08 00:26:02 +0000
 1.30.2.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.33.2.4 01-Apr-2005  skrll Sync with HEAD.
 1.33.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.33.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.33.2.1 03-Aug-2004  skrll Sync with HEAD
 1.34.10.1 23-Feb-2005  yamt change mac68k's kernel address space layout in order to simplify
interaction between upper layer of the vm during bootstrap.
- move Sysmap to the end of address space.
- move IOBase etc immediately after proc0 uarea.
- tweak virtual_avail/end accordingly.

tested by Chuck Silvers, on his quadra 950.
XXX this breaks other m68k platforms. i'll fix them later.
 1.34.8.1 29-Apr-2005  kent sync with -current
 1.36.86.2 28-Apr-2009  skrll Sync with HEAD.
 1.36.86.1 19-Jan-2009  skrll Sync with HEAD.
 1.36.78.3 11-Mar-2010  yamt sync with head
 1.36.78.2 16-Sep-2009  yamt sync with head
 1.36.78.1 04-May-2009  yamt sync with head.
 1.36.74.1 17-Jan-2009  mjf Sync with HEAD.
 1.37.2.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.40.4.1 05-Mar-2011  rmind sync with head
 1.40.2.1 26-Apr-2010  uebayasi Remove the unfinished code to add a memory segment after uvm_page_init().
It doesn't even compile.

(In the future, we should allocate struct vm_page [] on the added memory
segment for NUMA's sake.)
 1.41.4.1 17-Feb-2011  bouyer Sync with HEAD
 1.41.2.1 06-Jun-2011  jruoho Sync with HEAD.
 1.42.40.1 21-Apr-2017  bouyer Sync with HEAD
 1.42.36.1 20-Mar-2017  pgoyette Sync with HEAD
 1.42.32.1 05-Feb-2017  skrll Sync with HEAD
 1.42.14.1 03-Dec-2017  jdolecek update from HEAD
 1.44.14.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.45.4.1 29-Feb-2020  ad Sync with head.
 1.45.2.1 10-Feb-2020  martin Pull up following revision(s) (requested by tsutsui in ticket #682):

sys/arch/next68k/include/vmparam.h: revision 1.27
sys/arch/mac68k/include/vmparam.h: revision 1.46
sys/arch/sun3/include/vmparam.h: revision 1.38
sys/arch/m68k/include/vmparam.h: revision 1.1
sys/arch/hp300/include/vmparam.h: revision 1.41
sys/arch/m68k/include/Makefile: revision 1.32
sys/arch/amiga/include/vmparam.h: revision 1.48
distrib/sets/lists/comp/ad.m68k: revision 1.63
sys/arch/x68k/include/vmparam.h: revision 1.40
sys/arch/mvme68k/include/vmparam.h: revision 1.38
sys/arch/luna68k/include/vmparam.h: revision 1.23
sys/arch/news68k/include/vmparam.h: revision 1.23
sys/arch/atari/include/vmparam.h: revision 1.34
sys/arch/cesfic/include/vmparam.h: revision 1.19

Add MAX/MIN PAGE_SIZE and PAGE_SHIFT definitions of m68k for jemalloc(3).

Background:
- All m68k ports have fixed PAGE_SIZE value in their kernels,
but each port uses different PAGE_SIZE value (4096 or 8192)
due to historical reasons.
- Currently module(7) binaries are built per each port so
all m68k kernel sources don't support run-time variable PAGE_SIZE.
- MI <uvm/uvm_param.h> assumes that the port supports a variable
PAGE_SIZE on module(7) builds if both MAX_PAGE_SIZE and MIN_PAGE_SIZE
are defined and they have different values.
- On the other hand, jemalloc(3) checks MAX_PAGE_SHIFT in
src/external/bsd/jemalloc/include/jemalloc/internal/jemalloc_internal_defs.h
for internal optimization.
- m68k ports share userland binaries (especially pkgsrc binaries)
among all ports, so we need to define MAX_PAGE_SHIFT as 13 to
support m68k ports where PAGE_SIZE==8192.
(though this would affect only if static binaries built on
4k page hosts are executed on 8k page hosts)

To solve these inconsistency on PAGE_SIZE definitions,
we should have an independent PAGE_SIZE related definitions
for userland, but it requires major reorganization.

For now (especially for netbsd-9) we define MAX/MIN PAGE_SIZE and
PAGE_SHIFT values in <m68k/vmparam.h> only in !defined(_KERNEL) case.

Discussed on source-changes-d@ and tech-kern@ with christos@ and thorpej@:
https://mail-index.netbsd.org/source-changes-d/2020/01/thread1.html#012035
https://mail-index.netbsd.org/tech-kern/2020/01/thread1.html#025954

Should be pulled up to netbsd-9.
 1.2 11-Dec-2005  christos merge ktrace-lwp.
 1.1 08-May-2004  kleink branches: 1.1.2;
Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.
 1.1.2.4 21-Sep-2004  skrll Fix the sync with head I botched.
 1.1.2.3 18-Sep-2004  skrll Sync with HEAD.
 1.1.2.2 03-Aug-2004  skrll Sync with HEAD
 1.1.2.1 08-May-2004  skrll file wchar_limits.h was added on branch ktrace-lwp on 2004-08-03 10:37:08 +0000
 1.14 25-Apr-2025  andvar s/cahnge/change/ in comments.
 1.13 29-Mar-2008  tsutsui branches: 1.13.128;
Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.
 1.12 07-Nov-2007  ad branches: 1.12.14;
Merge tty changes from the vmlocking branch.
 1.11 08-Mar-2007  tsutsui branches: 1.11.2; 1.11.18; 1.11.20; 1.11.24; 1.11.26;
MI softintr(9)'fy.
Probably problematic, but LC630 is running at single user.
 1.10 04-Mar-2007  christos Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.9 11-Dec-2005  christos branches: 1.9.26;
merge ktrace-lwp.
 1.8 15-Jan-2005  chs branches: 1.8.10;
de-__P, remove register, ansify, b* -> mem*.
 1.7 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.6 17-Mar-2002  atatat branches: 1.6.12;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.
 1.5 20-Oct-1997  scottr branches: 1.5.32; 1.5.36;
Convert to MI 8530 SCC driver, from Bill Studenmund. The new front end
also supports DTR/CTS flow control.
 1.4 13-Oct-1996  christos backout previous kprintf change
 1.3 11-Oct-1996  christos printf -> kprintf, sprintf -> ksprintf
 1.2 07-Jun-1996  briggs Add constants for booter interface.
 1.1 18-May-1996  briggs branches: 1.1.4;
Serial driver with interface to a slightly modified version of the machine-
independent z8530 driver. When that driver is updated, the local copy
of those files may be removed. From Bill Studenmund.
Compiler warnings fixed by me.
 1.1.4.1 07-Jun-1996  briggs Pull up changes from trunk. Console fix and external serial clock support.
 1.5.36.1 01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.5.32.1 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.6.12.4 17-Jan-2005  skrll Sync with HEAD.
 1.6.12.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.6.12.2 18-Sep-2004  skrll Sync with HEAD.
 1.6.12.1 03-Aug-2004  skrll Sync with HEAD
 1.8.10.2 15-Nov-2007  yamt sync with head.
 1.8.10.1 03-Sep-2007  yamt sync with head.
 1.9.26.1 12-Mar-2007  rmind Sync with HEAD.
 1.11.26.1 19-Nov-2007  mjf Sync with HEAD.
 1.11.24.1 13-Nov-2007  bouyer Sync with HEAD
 1.11.20.1 08-Nov-2007  matt sync with -HEAD
 1.11.18.1 11-Nov-2007  joerg Sync with HEAD.
 1.11.2.1 03-Dec-2007  ad Sync with HEAD.
 1.12.14.1 03-Apr-2008  mjf Sync with HEAD.
 1.13.128.1 02-Aug-2025  perseant Sync with HEAD

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