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History log of /src/sys/arch/next68k/include
RevisionDateAuthorComments
 1.24 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.
 1.23 12-Jul-2018  maxv branches: 1.23.36;
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.
 1.22 24-Dec-2015  christos branches: 1.22.16; 1.22.18;
fenv for m68k
 1.21 17-Jul-2011  joerg branches: 1.21.12; 1.21.30;
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.
 1.20 09-Feb-2007  ad Merge newlock2 to head.
 1.19 26-Jul-2006  drochner branches: 1.19.4;
don't install <machine/db_machdep.h>, this is kernel only
 1.18 11-Dec-2005  christos branches: 1.18.4; 1.18.8;
merge ktrace-lwp.
 1.17 08-May-2004  kleink branches: 1.17.12;
Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.
 1.16 18-Jan-2003  thorpej branches: 1.16.2;
Merge the nathanw_sa branch.
 1.15 26-Nov-2002  lukem Remove KDIR=, since SYS_INCLUDE=symlinks and KDIR are not supported any more.
 1.14 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.
 1.13 28-Nov-2001  kleink branches: 1.13.8;
No point in installing svr4_machdep.h.
 1.12 15-Apr-2001  kleink branches: 1.12.2; 1.12.8;
Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.
 1.11 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.
 1.10 14-Apr-2001  kleink Add definitions of C99 integer constant macros.
Tidy Makefiles up a little.
 1.9 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.
 1.8 26-Jun-2000  kleink branches: 1.8.2;
Add <machine/int_types.h>, which provides namespace-pure definitions
of exact-width integer types.
 1.7 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>.
 1.6 17-Mar-2000  tron Install "machineendian_machdep.h".
 1.5 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.
 1.4 19-Apr-1999  kleink branches: 1.4.2;
Add COMPAT_SVR4 for m68k.
 1.3 15-Mar-1999  minoura branches: 1.3.4;
Pullin m68k/ieee.h.
 1.2 15-Jan-1999  bouyer 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 12-Jul-1998  veego New Makefile to install the includes, like all the other ports do.
 1.3.4.1 21-Jun-1999  thorpej Sync w/ -current.
 1.4.2.2 21-Apr-2001  bouyer Sync with HEAD
 1.4.2.1 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.
 1.8.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.12.8.5 11-Dec-2002  thorpej Sync with HEAD.
 1.12.8.4 13-Aug-2002  nathanw Catch up to -current.
 1.12.8.3 08-Jan-2002  nathanw Catch up to -current.
 1.12.8.2 10-Nov-2001  scw Kernel mcontext glue for Scheduler Activations on m68k from
Klaus Klein <kleink@netbsd.org>.
 1.12.8.1 15-Apr-2001  scw file Makefile was added on branch nathanw_sa on 2001-11-10 21:22:52 +0000
 1.12.2.2 06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.12.2.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.13.8.1 31-Aug-2002  gehenna catch up with -current.
 1.16.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.16.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.16.2.1 03-Aug-2004  skrll Sync with HEAD
 1.17.12.2 26-Feb-2007  yamt sync with head.
 1.17.12.1 30-Dec-2006  yamt sync with head.
 1.18.8.1 11-Aug-2006  yamt sync with head
 1.18.4.1 09-Sep-2006  rpaulo sync with head
 1.19.4.1 01-Feb-2007  ad Header file cleanup.
 1.21.30.1 27-Dec-2015  skrll Sync with HEAD (as of 26th Dec)
 1.21.12.1 03-Dec-2017  jdolecek update from HEAD
 1.22.18.1 10-Jun-2019  christos Sync with HEAD
 1.22.16.1 28-Jul-2018  pgoyette Sync with HEAD
 1.23.36.1 02-Aug-2025  perseant Sync with HEAD
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.7 16-Jun-2017  jdolecek dumpconf(void) long doesn't exist, remove the prototype

PR kern/39714 by Henning Petersen
 1.6 04-Mar-2007  christos branches: 1.6.88; 1.6.108;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.5 11-Dec-2005  christos branches: 1.5.26;
merge ktrace-lwp.
 1.4 19-Jan-2005  chs branches: 1.4.8;
de-__P, remove register, ansify.
 1.3 11-Sep-2002  mycroft branches: 1.3.6; 1.3.14;
Comprehensive patches from Christian Limpach:
* Fix problems with the DMA and SCSI drivers.
* Make turbo machines sort of work.
Additional fixes from me:
* Determine if we're a turbo at boot time, by looking at the ROM machine type.
* Set the display size correctly (1120 pixels wide, but padded to 1152 only on
non-turbo machines).
Caveats:
* SCSI doesn't work on the turbo (or at least it blows chunks with no devices
attached).
* Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on
turbo machines).
* The boot block is prone to timing out.
 1.2 06-Oct-1998  thorpej branches: 1.2.26; 1.2.30;
configure() prototype is in <sys/device.h>
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2.30.1 17-Sep-2002  nathanw Catch up to -current.
 1.2.26.1 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
 1.3.14.1 29-Apr-2005  kent sync with -current
 1.3.6.1 24-Jan-2005  skrll Sync with HEAD.
 1.4.8.1 03-Sep-2007  yamt sync with head.
 1.5.26.1 12-Mar-2007  rmind Sync with HEAD.
 1.6.108.1 28-Aug-2017  skrll Sync with HEAD
 1.6.88.1 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 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.
 1.3 11-Sep-2002  mycroft Comprehensive patches from Christian Limpach:
* Fix problems with the DMA and SCSI drivers.
* Make turbo machines sort of work.
Additional fixes from me:
* Determine if we're a turbo at boot time, by looking at the ROM machine type.
* Set the display size correctly (1120 pixels wide, but padded to 1152 only on
non-turbo machines).
Caveats:
* SCSI doesn't work on the turbo (or at least it blows chunks with no devices
attached).
* Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on
turbo machines).
* The boot block is prone to timing out.
 1.2 03-Aug-1999  dbj branches: 1.2.16; 1.2.20;
resync bus_dma functions with current alpha versions.
added a field to a dma segment to return the actual length of that segment that
was successfully transferred.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2.20.1 17-Sep-2002  nathanw Catch up to -current.
 1.2.16.1 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
 1.10 11-Sep-2002  mycroft Comprehensive patches from Christian Limpach:
* Fix problems with the DMA and SCSI drivers.
* Make turbo machines sort of work.
Additional fixes from me:
* Determine if we're a turbo at boot time, by looking at the ROM machine type.
* Set the display size correctly (1120 pixels wide, but padded to 1152 only on
non-turbo machines).
Caveats:
* SCSI doesn't work on the turbo (or at least it blows chunks with no devices
attached).
* Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on
turbo machines).
* The boot block is prone to timing out.
 1.9 19-Jul-2001  thorpej branches: 1.9.6;
Add BUS_DMA_READ and BUS_DMA_WRITE flags, that hint the back-end
at dmamap load time that the mapping will be used for a unidirectional
transfer of the specified direction.
 1.8 21-Jun-2001  wiz branches: 1.8.2;
constraint, not contraint.
 1.7 16-Apr-2001  dbj make sure that dm_segs is last field of next68k_bus_dmamap,
so that variable length allocations work
 1.6 16-Apr-2001  dbj add receive ethernet bpf tap
keep receive ethernet crc and set M_HASFCS
change bus_dma MD fields to keep xfer_len for entire map
instead of per segment
turn off automatic dma restarts in preparation for changing
scsi driver to handle them.
add dma debugging routines to keep history of dma states
tweak checking for unusual dma limit register
 1.5 07-Mar-2001  thorpej Add the BUS_DMA_STREAMING flag.
 1.4 26-Jun-2000  simonb branches: 1.4.2;
Change the kernel mmap interface so that the offset to map is an
"off_t" and the return value is a "paddr_t" to allow mappings
at offsets past 2^31 bytes. Somewhat inspired by FreeBSD, which
only changed the offset to a "vm_offset_t".

Includes updates for the i386, pc532 and sh3 mmmmap from Jason Thorpe.
 1.3 05-Aug-1999  dbj branches: 1.3.2; 1.3.12;
changed dma segment field "ds_read_len" to "ds_xfer_len" since it is valid for
either read or write transfers.
 1.2 03-Aug-1999  dbj resync bus_dma functions with current alpha versions.
added a field to a dma segment to return the actual length of that segment that
was successfully transferred.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.3.12.1 30-Jun-2000  simonb Pull up mmap paddr_t/off_t changes from trunk.
 1.3.2.3 21-Apr-2001  bouyer Sync with HEAD
 1.3.2.2 12-Mar-2001  bouyer Sync with HEAD.
 1.3.2.1 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.
 1.4.2.2 21-Jun-2001  nathanw Catch up to -current.
 1.4.2.1 09-Apr-2001  nathanw Catch up with -current.
 1.8.2.2 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
 1.8.2.1 03-Aug-2001  lukem update to -current
 1.9.6.2 17-Sep-2002  nathanw Catch up to -current.
 1.9.6.1 19-Jul-2001  nathanw file bus_dma.h was added on branch nathanw_sa on 2002-09-17 21:16:33 +0000
 1.23 11-Feb-2023  tsutsui Handle NeXT Turbo VRAM regions properly.

Info from Andreas Grabher on port-next68k@:
https://mail-index.netbsd.org/port-next68k/2023/02/06/msg000052.html

Also refactor bus_space_map(9) and fix (unused) bus_space_mmap(9).
 1.22 03-Feb-2023  tsutsui Use proper C99 int types.
 1.21 03-Feb-2023  tsutsui Misc KNF and cosmetics.
 1.20 27-Jan-2023  tsutsui next68k: Specify proper constraints for bus_space_read region and multi ops.

These functions write the read data into memory at a specified pointer,
but without the "memory" constraint gcc could optimize out these ops
if the memory is allocated on local stack.

With this fix nextkbd(4) works again.

Should be pulled up to netbsd-10 and netbsd-9.
 1.19 23-Jan-2021  christos branches: 1.19.18;
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.
 1.18 02-Apr-2020  msaitoh branches: 1.18.4;
s/impliment/implement/ in comment.
 1.17 23-Sep-2019  skrll Provide PRIxBUSADDR, PRIxBUSSIZE, PRIuBUSSIZE, and PRIxBSH for all arches
to follow arm and (generic) mips.

Reviewed by christos.
 1.16 12-Feb-2012  matt branches: 1.16.48; 1.16.52;
Change old-style function defintions to C89 prototypes.

Approved by releng.
 1.15 28-Apr-2008  martin branches: 1.15.34; 1.15.38;
Remove clause 3 and 4 from TNF licenses
 1.14 16-Feb-2006  perry branches: 1.14.68; 1.14.70; 1.14.72;
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@.
 1.13 24-Dec-2005  perry branches: 1.13.2; 1.13.4; 1.13.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.
 1.12 11-Dec-2005  christos merge ktrace-lwp.
 1.11 19-Jan-2005  chs branches: 1.11.8;
de-__P, remove register, ansify.
 1.10 01-Oct-2003  mycroft branches: 1.10.8;
Some small cleanup -- make the base,limit values vaddr_t, not char*.
Also add some code that attempts to deal with C16_VIDEO interrupts, though it
does not seem to make my color slabs work again.
 1.9 11-Sep-2002  mycroft branches: 1.9.6;
Comprehensive patches from Christian Limpach:
* Fix problems with the DMA and SCSI drivers.
* Make turbo machines sort of work.
Additional fixes from me:
* Determine if we're a turbo at boot time, by looking at the ROM machine type.
* Set the display size correctly (1120 pixels wide, but padded to 1152 only on
non-turbo machines).
Caveats:
* SCSI doesn't work on the turbo (or at least it blows chunks with no devices
attached).
* Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on
turbo machines).
* The boot block is prone to timing out.
 1.8 11-Jun-2002  deberg bus_space_mmap(), same as atari port. untested, as it is unused.
 1.7 12-May-2001  chs branches: 1.7.2; 1.7.8; 1.7.16;
switch next68k to ELF. highlight include:
add "%" prefix to register names in assembly code.
change assembly functions to return pointer values in %a0 instead of %d0.
C symbols no longer prepend an underscore, adjust assembly code for this.
32-bit values are now 32-bit aligned instead of 16-bit aligned,
adjust structure packing and padding to override this where necessary.
make EXEC_ELF std, make EXEC_AOUT and COMPAT_AOUT_M68K optional.
use the MI loadfile() instead of several home-grown versions.
 1.6 29-Sep-2000  deberg branches: 1.6.2;
add support for 12-bit color displays, from Timm Wetzel w/ changes by
me. closes 10741.
 1.5 10-Apr-1999  drochner branches: 1.5.2; 1.5.12;
add BUS_SPACE_ALIGNED_POINTER() definitions for completeness
 1.4 24-Mar-1999  dbj branches: 1.4.4;
Applied patches from Matt Debergalis <deberg@mit.edu>.
These patches include:
Added framebuffer mapping for color framebuffer to support color wscons
which is coming soon.
Renamed wskbdmap_mfii[ch] to wskbdmap_next[ch]
Changed video to be white on black instead of black on white.
Now handles and discards mouse interrupts.
Video and keyboard is now working on mono machines.
 1.3 02-Jan-1999  dbj Applied supplied patches from pr port-next68k/6709
add bus_space support for mono framebuffer
 1.2 05-Jul-1998  dbj Started the esp scsi driver.
Fixed bus_space_handle_t in nextdma device.
Fixed scsi interrupt define.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.4.4.1 21-Jun-1999  thorpej Sync w/ -current.
 1.5.12.1 06-Oct-2000  deberg pullup 1.6, approved by thorpej

add support for 12-bit color displays, from Timm Wetzel w/ changes by
me. closes 10741.
 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.
 1.6.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.7.16.1 15-Jul-2002  gehenna catch up with -current.
 1.7.8.3 17-Sep-2002  nathanw Catch up to -current.
 1.7.8.2 20-Jun-2002  nathanw Catch up to -current.
 1.7.8.1 12-May-2001  nathanw file bus_space.h was added on branch nathanw_sa on 2002-06-20 03:40:22 +0000
 1.7.2.2 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
 1.7.2.1 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.9.6.4 24-Jan-2005  skrll Sync with HEAD.
 1.9.6.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.9.6.2 18-Sep-2004  skrll Sync with HEAD.
 1.9.6.1 03-Aug-2004  skrll Sync with HEAD
 1.10.8.1 29-Apr-2005  kent sync with -current
 1.11.8.1 21-Jun-2006  yamt sync with head.
 1.13.6.1 22-Apr-2006  simonb Sync with head.
 1.13.4.1 09-Sep-2006  rpaulo sync with head
 1.13.2.1 18-Feb-2006  yamt sync with head.
 1.14.72.1 16-May-2008  yamt sync with head.
 1.14.70.1 18-May-2008  yamt sync with head.
 1.14.68.1 02-Jun-2008  mjf Sync with HEAD.
 1.15.38.1 18-Feb-2012  mrg merge to -current.
 1.15.34.1 17-Apr-2012  yamt sync with head
 1.16.52.2 15-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #1598):

sys/arch/next68k/next68k/nextrom.h: revision 1.13
sys/arch/next68k/dev/nextdisplayvar.h: revision 1.6
sys/arch/next68k/dev/intiovar.h: revision 1.8
sys/arch/next68k/dev/nextcons.c: revision 1.12
sys/arch/next68k/next68k/locore.s: revision 1.69
sys/arch/next68k/dev/nextcons.c: revision 1.13
sys/arch/next68k/dev/nextcons.c: revision 1.14
sys/arch/next68k/include/bus_space.h: revision 1.18
sys/arch/next68k/dev/nextdisplay.c: revision 1.30
sys/arch/next68k/include/bus_space.h: revision 1.19
sys/arch/next68k/stand/boot/boot.c: revision 1.13
sys/arch/next68k/next68k/nextrom.c: revision 1.28
sys/arch/next68k/next68k/nextrom.c: revision 1.29
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.46
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.47
sys/arch/next68k/include/cpu.h: revision 1.52
sys/arch/next68k/dev/intio.c: revision 1.17 (patch)
sys/arch/next68k/dev/intio.c: revision 1.18 (patch)
sys/arch/next68k/dev/intio.c: revision 1.19 (patch)
sys/arch/next68k/next68k/locore.s: revision 1.72
sys/arch/next68k/stand/boot/version: revision 1.6
sys/arch/next68k/include/bus_space.h: revision 1.21
sys/arch/next68k/include/bus_space.h: revision 1.22
sys/arch/next68k/dev/nextdisplay.c: revision 1.26
sys/arch/next68k/include/bus_space.h: revision 1.23
sys/arch/next68k/dev/nextdisplay.c: revision 1.27
sys/arch/next68k/dev/nextdisplay.c: revision 1.28
sys/arch/next68k/dev/nextdisplay.c: revision 1.29

s/impliment/implement/ in comment.

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.

Misc KNF and cosmetics.

Use proper C99 int types.

Remove trailing spaces and TABs.

Handle NeXT Turbo VRAM regions properly.
Info from Andreas Grabher on port-next68k@:
https://mail-index.netbsd.org/port-next68k/2023/02/06/msg000052.html

Also refactor bus_space_map(9) and fix (unused) bus_space_mmap(9).

Add and check machine type NeXT_CUBE_TURBO (type 8).
Info from Andreas Grabher on port-next68k@.

NeXT Turbo Color doesn't have NEXT_P_C16_CMD_REG.
Info from Andreas Grabher on port-next68k@.

Bump version again to denote NeXT_CUBE_TURBO support.
 1.16.52.1 01-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #1581):

sys/arch/next68k/next68k/machdep.c: revision 1.117
sys/arch/next68k/dev/esp.c: revision 1.65
sys/arch/next68k/include/cpu.h: revision 1.51
sys/arch/next68k/include/bus_space.h: revision 1.20
sys/arch/next68k/next68k/clock.c: revision 1.13

next68k: Fix delay_divisor value for proper delay(9) on 68040.

next68k: Specify proper constraints for bus_space_read region and multi ops.

These functions write the read data into memory at a specified pointer,
but without the "memory" constraint gcc could optimize out these ops
if the memory is allocated on local stack.

With this fix nextkbd(4) works again.
Should be pulled up to netbsd-10 and netbsd-9.

next68k: Fix silent stall of next68k esp(4) SCSI.

next68k esp(4) driver requires nextdma(4) interrupts at ipl 6
during ncr53c9x_intr() for esp(4) at ipl 3. It worked on netbsd-5
and prior, but on netbsd-5 splbio() was changed from ipl 3 to 6
for SMP support and on netbsd-6 ncr53c9x driver was changed to
use mutex(9) instead of simple_lock(9), so nextdma interrupts
were no longer raised during ncr53c9x interrupt handler.

For now, just call mutex_exit(9) and mutex_enter(9) during
waiting nextdma(4) interrupts in MD esp_dma_intr() handler.

This could be wrong and the interrupt handler for nextdma should
be reorganized, but it just works.

Should be pulled up to netbsd-10 and netbsd-9.
 1.16.48.2 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.16.48.1 08-Apr-2020  martin Merge changes from current as of 20200406
 1.18.4.1 03-Apr-2021  thorpej Sync with HEAD.
 1.19.18.2 15-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #88):

sys/arch/next68k/next68k/nextrom.h: revision 1.13
sys/arch/next68k/dev/nextdisplayvar.h: revision 1.6
sys/arch/next68k/dev/intiovar.h: revision 1.8
sys/arch/next68k/dev/nextcons.c: revision 1.12
sys/arch/next68k/next68k/locore.s: revision 1.69
sys/arch/next68k/dev/nextcons.c: revision 1.13
sys/arch/next68k/dev/nextcons.c: revision 1.14
sys/arch/next68k/dev/nextdisplay.c: revision 1.30
sys/arch/next68k/stand/boot/boot.c: revision 1.13
sys/arch/next68k/next68k/nextrom.c: revision 1.28
sys/arch/next68k/next68k/nextrom.c: revision 1.29
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.46
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.47
sys/arch/next68k/include/cpu.h: revision 1.52
sys/arch/next68k/dev/intio.c: revision 1.17
sys/arch/next68k/dev/intio.c: revision 1.18
sys/arch/next68k/dev/intio.c: revision 1.19
sys/arch/next68k/next68k/locore.s: revision 1.72
sys/arch/next68k/stand/boot/version: revision 1.6
sys/arch/next68k/include/bus_space.h: revision 1.21
sys/arch/next68k/include/bus_space.h: revision 1.22
sys/arch/next68k/dev/nextdisplay.c: revision 1.26
sys/arch/next68k/include/bus_space.h: revision 1.23
sys/arch/next68k/dev/nextdisplay.c: revision 1.27
sys/arch/next68k/dev/nextdisplay.c: revision 1.28
sys/arch/next68k/dev/nextdisplay.c: revision 1.29

Misc KNF and cosmetics.

Use proper C99 int types.

Remove trailing spaces and TABs.

Handle NeXT Turbo VRAM regions properly.
Info from Andreas Grabher on port-next68k@:
https://mail-index.netbsd.org/port-next68k/2023/02/06/msg000052.html

Also refactor bus_space_map(9) and fix (unused) bus_space_mmap(9).

Add and check machine type NeXT_CUBE_TURBO (type 8).
Info from Andreas Grabher on port-next68k@.

NeXT Turbo Color doesn't have NEXT_P_C16_CMD_REG.
Info from Andreas Grabher on port-next68k@.

Bump version again to denote NeXT_CUBE_TURBO support.
 1.19.18.1 01-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #63):

sys/arch/next68k/next68k/machdep.c: revision 1.117
sys/arch/next68k/dev/esp.c: revision 1.65
sys/arch/next68k/include/cpu.h: revision 1.51
sys/arch/next68k/include/bus_space.h: revision 1.20
sys/arch/next68k/next68k/clock.c: revision 1.13

next68k: Fix delay_divisor value for proper delay(9) on 68040.

next68k: Specify proper constraints for bus_space_read region and multi ops.

These functions write the read data into memory at a specified pointer,
but without the "memory" constraint gcc could optimize out these ops
if the memory is allocated on local stack.

With this fix nextkbd(4) works again.
Should be pulled up to netbsd-10 and netbsd-9.

next68k: Fix silent stall of next68k esp(4) SCSI.

next68k esp(4) driver requires nextdma(4) interrupts at ipl 6
during ncr53c9x_intr() for esp(4) at ipl 3. It worked on netbsd-5
and prior, but on netbsd-5 splbio() was changed from ipl 3 to 6
for SMP support and on netbsd-6 ncr53c9x driver was changed to
use mutex(9) instead of simple_lock(9), so nextdma interrupts
were no longer raised during ncr53c9x interrupt handler.

For now, just call mutex_exit(9) and mutex_enter(9) during
waiting nextdma(4) interrupts in MD esp_dma_intr() handler.

This could be wrong and the interrupt handler for nextdma should
be reorganized, but it just works.

Should be pulled up to netbsd-10 and netbsd-9.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.58 20-Jan-2024  thorpej Largely unify the <machine/cpu.h> headers on the m68k platforms.
 1.57 19-Jan-2024  thorpej Consistently use "intr_depth" as the name of the interrupt depth counter
on m68k platforms.
 1.56 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).
 1.55 18-Jan-2024  thorpej Switch next68k over to common interrupt dispatch and G/C __HAVE_LEGACY_INTRCNT.
Also included is G/C of the old ssir stuff that's no longer used.
 1.54 13-Jan-2024  thorpej Switch next68k over to the common m68k vector table.
 1.53 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.
 1.52 11-Feb-2023  tsutsui Handle NeXT Turbo VRAM regions properly.

Info from Andreas Grabher on port-next68k@:
https://mail-index.netbsd.org/port-next68k/2023/02/06/msg000052.html

Also refactor bus_space_map(9) and fix (unused) bus_space_mmap(9).
 1.51 27-Jan-2023  tsutsui next68k: Fix delay_divisor value for proper delay(9) on 68040.
 1.50 23-Nov-2019  ad branches: 1.50.26;
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().
 1.49 18-Feb-2019  thorpej branches: 1.49.4;
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!)
 1.48 17-Dec-2016  flxd branches: 1.48.16;
Fix typo "one the" and architecture where appropriate.
 1.47 19-Oct-2013  christos branches: 1.47.6; 1.47.10;
make cpu_need_resched() macros consistent; __USE flags
 1.46 02-Feb-2012  tsutsui branches: 1.46.6; 1.46.10;
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.
 1.45 16-May-2011  tsutsui branches: 1.45.4; 1.45.8;
- 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.
 1.44 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@.
 1.43 22-Dec-2010  matt branches: 1.43.2; 1.43.4;
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.
 1.42 06-Jun-2010  mrg fix PR 6724 - convert m68k options to defflag's. this means that
M680[12346] are now available from opt_m68k_arch.h. FPSP meantioned
in the PR has already been fixed, and i could not find any more.

i built these kernels to ensure i did not break their builds:

amiga: GENERIC DRACO
atari: HADES FALCON MILAN-PCIIDE
mac68k: GENERIC
sun2: GENERIC
sun3: GENERIC GENERIC3X
cesfic: attempted GENERIC, does not build due to lack of machine/bus.h
hp300: GENERIC
luna68k: GENERIC
mvme68k: GENERIC
news68k: GENERIC
next68k: GENERIC
x68k: GENERIC
 1.41 21-Oct-2009  rmind branches: 1.41.2; 1.41.4;
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>.
 1.40 17-Oct-2007  garbled branches: 1.40.20;
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.
 1.39 04-Aug-2007  tsutsui branches: 1.39.2;
TAB/space cleanup.
 1.38 04-Aug-2007  tsutsui Add ci_cpuid where it's missing.
 1.37 21-May-2007  tsutsui branches: 1.37.2; 1.37.4; 1.37.8;
Move declarations of m68k common functions
from <machine/cpu.h> to <m68k/m68k.h>.
While here, remove some obsolete function decls.
 1.36 21-May-2007  tsutsui Remove obsolete "extern int want_resched" decls.
 1.35 21-May-2007  tsutsui Adapt rest of m68k ports to yamt-idlelwp. Compile tested only.
 1.34 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.
 1.33 04-Mar-2007  christos branches: 1.33.2; 1.33.4; 1.33.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.32 16-Feb-2007  ad branches: 1.32.2;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.
 1.31 09-Feb-2007  ad Merge newlock2 to head.
 1.30 11-Dec-2005  christos branches: 1.30.20;
merge ktrace-lwp.
 1.29 19-Jan-2005  chs branches: 1.29.8;
de-__P, remove register, ansify.
 1.28 26-Sep-2004  yamt branches: 1.28.4;
don't expose cpu_info to userland.
 1.27 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@.
 1.26 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
 1.25 05-Oct-2003  mycroft Minor tweaks to the color framebuffer code -- still don't know what the deal
with the interrupt is.
 1.24 01-Oct-2003  mycroft Some small cleanup -- make the base,limit values vaddr_t, not char*.
Also add some code that attempts to deal with C16_VIDEO interrupts, though it
does not seem to make my color slabs work again.
 1.23 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.
 1.22 18-Jan-2003  thorpej branches: 1.22.2;
Merge the nathanw_sa branch.
 1.21 20-Oct-2002  chs merge the 12 copies of vm_machdep.c on the m68k platforms.
clean up some other stuff along the way, including:
- use m68k/cacheops.*, remove duplicates from cpu.h.
- centralize a few declarations in (all the copies of) cpu.h.
- define M68K_VAC on platforms which have a VAC.
- switch the sun platforms to the (now common) proc_trampoline().
- do the phys_map thang on the sun platforms too, no reason not to.
 1.20 11-Sep-2002  mycroft Comprehensive patches from Christian Limpach:
* Fix problems with the DMA and SCSI drivers.
* Make turbo machines sort of work.
Additional fixes from me:
* Determine if we're a turbo at boot time, by looking at the ROM machine type.
* Set the display size correctly (1120 pixels wide, but padded to 1152 only on
non-turbo machines).
Caveats:
* SCSI doesn't work on the turbo (or at least it blows chunks with no devices
attached).
* Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on
turbo machines).
* The boot block is prone to timing out.
 1.19 14-May-2002  matt Eliminate commons (including many used ones). Clean up variable references.
 1.18 30-May-2001  mrg branches: 1.18.2; 1.18.8;
use _KERNEL_OPT
 1.17 13-May-2001  chs turn on printf format-string checking and -Werror. fix all warnings.
 1.16 12-May-2001  chs switch next68k to ELF. highlight include:
add "%" prefix to register names in assembly code.
change assembly functions to return pointer values in %a0 instead of %d0.
C symbols no longer prepend an underscore, adjust assembly code for this.
32-bit values are now 32-bit aligned instead of 16-bit aligned,
adjust structure packing and padding to override this where necessary.
make EXEC_ELF std, make EXEC_AOUT and COMPAT_AOUT_M68K optional.
use the MI loadfile() instead of several home-grown versions.
 1.15 19-Dec-2000  scw branches: 1.15.2;
Unification of the m68k syscall() function.
 1.14 29-Sep-2000  deberg add support for 12-bit color displays, from Timm Wetzel w/ changes by
me. closes 10741.
 1.13 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.
 1.12 26-May-2000  thorpej branches: 1.12.4;
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.
 1.11 10-Aug-1999  thorpej branches: 1.11.2;
Define cpu_number() as discussed on tech-smp.
 1.10 24-Mar-1999  dbj Applied patches from Matt Debergalis <deberg@mit.edu>.
These patches include:
Added framebuffer mapping for color framebuffer to support color wscons
which is coming soon.
Renamed wskbdmap_mfii[ch] to wskbdmap_next[ch]
Changed video to be white on black instead of black on white.
Now handles and discards mouse interrupts.
Video and keyboard is now working on mono machines.
 1.9 26-Feb-1999  is synchronize types, and s/curproc/p/ in one forgotten place
 1.8 26-Feb-1999  is next68k specific part of PR 6152 fix
 1.7 02-Jan-1999  dbj Applied supplied patches from pr port-next68k/6709
add bus_space support for mono framebuffer
 1.6 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.
 1.5 10-Nov-1998  dbj Sync'ed more files and routines with mvme port in prepartion for UVM.
Now use generic m68k cachops everywhere rather than defining them in locore.s
 1.4 31-Aug-1998  dbj Fixed typo in printf bitfields for intrstat register.
 1.3 28-Aug-1998  dbj added a flag to disable the NEXT_SLOT_ID_BMAP for testing the turbo machines
 1.2 05-Jul-1998  dbj Started the esp scsi driver.
Fixed bus_space_handle_t in nextdma device.
Fixed scsi interrupt define.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.11.2.2 05-Jan-2001  bouyer Sync with HEAD
 1.11.2.1 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.
 1.12.4.1 06-Oct-2000  deberg pullup 1.14, approved by thorpej

add support for 12-bit color displays, from Timm Wetzel w/ changes by
me. closes 10741.
 1.15.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.18.8.7 03-Dec-2002  gmcgarry Use cpu_proc_fork().
 1.18.8.6 11-Nov-2002  nathanw Catch up to -current
 1.18.8.5 17-Sep-2002  nathanw Catch up to -current.
 1.18.8.4 20-Jun-2002  nathanw Catch up to -current.
 1.18.8.3 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.
 1.18.8.2 18-Nov-2001  scw MD Scheduler Activation bits for Next68k.
Compile-tested only.
 1.18.8.1 30-May-2001  scw file cpu.h was added on branch nathanw_sa on 2001-11-18 18:43:06 +0000
 1.18.2.2 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
 1.18.2.1 23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.22.2.6 24-Jan-2005  skrll Sync with HEAD.
 1.22.2.5 19-Oct-2004  skrll Sync with HEAD
 1.22.2.4 24-Sep-2004  skrll Sync with HEAD.
 1.22.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.22.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.22.2.1 03-Aug-2004  skrll Sync with HEAD
 1.28.4.1 29-Apr-2005  kent sync with -current
 1.29.8.2 03-Sep-2007  yamt sync with head.
 1.29.8.1 26-Feb-2007  yamt sync with head.
 1.30.20.1 06-Feb-2007  ad Update m68k pasteware.
 1.32.2.1 12-Mar-2007  rmind Sync with HEAD.
 1.33.10.2 03-Oct-2007  garbled Sync with HEAD
 1.33.10.1 22-May-2007  matt Update to HEAD.
 1.33.4.1 11-Jul-2007  mjf Sync with head.
 1.33.2.2 20-Aug-2007  ad Sync with HEAD.
 1.33.2.1 27-May-2007  ad Sync with head.
 1.37.8.1 09-Aug-2007  jmcneill Sync with HEAD.
 1.37.4.1 15-Aug-2007  skrll Sync with HEAD.
 1.37.2.1 07-Aug-2007  matt Sync with HEAD.
 1.39.2.1 06-Nov-2007  matt sync with HEAD
 1.40.20.2 11-Aug-2010  yamt sync with head.
 1.40.20.1 11-Mar-2010  yamt sync with head
 1.41.4.3 31-May-2011  rmind sync with head
 1.41.4.2 05-Mar-2011  rmind sync with head
 1.41.4.1 03-Jul-2010  rmind sync with head
 1.41.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.43.4.1 17-Feb-2011  bouyer Sync with HEAD
 1.43.2.1 06-Jun-2011  jruoho Sync with HEAD.
 1.45.8.1 18-Feb-2012  mrg merge to -current.
 1.45.4.2 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")
 1.45.4.1 17-Apr-2012  yamt sync with head
 1.46.10.1 18-May-2014  rmind sync with head
 1.46.6.2 03-Dec-2017  jdolecek update from HEAD
 1.46.6.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.47.10.1 07-Jan-2017  pgoyette Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
 1.47.6.1 05-Feb-2017  skrll Sync with HEAD
 1.48.16.2 08-Apr-2020  martin Merge changes from current as of 20200406
 1.48.16.1 10-Jun-2019  christos Sync with HEAD
 1.49.4.2 15-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #1598):

sys/arch/next68k/next68k/nextrom.h: revision 1.13
sys/arch/next68k/dev/nextdisplayvar.h: revision 1.6
sys/arch/next68k/dev/intiovar.h: revision 1.8
sys/arch/next68k/dev/nextcons.c: revision 1.12
sys/arch/next68k/next68k/locore.s: revision 1.69
sys/arch/next68k/dev/nextcons.c: revision 1.13
sys/arch/next68k/dev/nextcons.c: revision 1.14
sys/arch/next68k/include/bus_space.h: revision 1.18
sys/arch/next68k/dev/nextdisplay.c: revision 1.30
sys/arch/next68k/include/bus_space.h: revision 1.19
sys/arch/next68k/stand/boot/boot.c: revision 1.13
sys/arch/next68k/next68k/nextrom.c: revision 1.28
sys/arch/next68k/next68k/nextrom.c: revision 1.29
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.46
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.47
sys/arch/next68k/include/cpu.h: revision 1.52
sys/arch/next68k/dev/intio.c: revision 1.17 (patch)
sys/arch/next68k/dev/intio.c: revision 1.18 (patch)
sys/arch/next68k/dev/intio.c: revision 1.19 (patch)
sys/arch/next68k/next68k/locore.s: revision 1.72
sys/arch/next68k/stand/boot/version: revision 1.6
sys/arch/next68k/include/bus_space.h: revision 1.21
sys/arch/next68k/include/bus_space.h: revision 1.22
sys/arch/next68k/dev/nextdisplay.c: revision 1.26
sys/arch/next68k/include/bus_space.h: revision 1.23
sys/arch/next68k/dev/nextdisplay.c: revision 1.27
sys/arch/next68k/dev/nextdisplay.c: revision 1.28
sys/arch/next68k/dev/nextdisplay.c: revision 1.29

s/impliment/implement/ in comment.

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.

Misc KNF and cosmetics.

Use proper C99 int types.

Remove trailing spaces and TABs.

Handle NeXT Turbo VRAM regions properly.
Info from Andreas Grabher on port-next68k@:
https://mail-index.netbsd.org/port-next68k/2023/02/06/msg000052.html

Also refactor bus_space_map(9) and fix (unused) bus_space_mmap(9).

Add and check machine type NeXT_CUBE_TURBO (type 8).
Info from Andreas Grabher on port-next68k@.

NeXT Turbo Color doesn't have NEXT_P_C16_CMD_REG.
Info from Andreas Grabher on port-next68k@.

Bump version again to denote NeXT_CUBE_TURBO support.
 1.49.4.1 01-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #1581):

sys/arch/next68k/next68k/machdep.c: revision 1.117
sys/arch/next68k/dev/esp.c: revision 1.65
sys/arch/next68k/include/cpu.h: revision 1.51
sys/arch/next68k/include/bus_space.h: revision 1.20
sys/arch/next68k/next68k/clock.c: revision 1.13

next68k: Fix delay_divisor value for proper delay(9) on 68040.

next68k: Specify proper constraints for bus_space_read region and multi ops.

These functions write the read data into memory at a specified pointer,
but without the "memory" constraint gcc could optimize out these ops
if the memory is allocated on local stack.

With this fix nextkbd(4) works again.
Should be pulled up to netbsd-10 and netbsd-9.

next68k: Fix silent stall of next68k esp(4) SCSI.

next68k esp(4) driver requires nextdma(4) interrupts at ipl 6
during ncr53c9x_intr() for esp(4) at ipl 3. It worked on netbsd-5
and prior, but on netbsd-5 splbio() was changed from ipl 3 to 6
for SMP support and on netbsd-6 ncr53c9x driver was changed to
use mutex(9) instead of simple_lock(9), so nextdma interrupts
were no longer raised during ncr53c9x interrupt handler.

For now, just call mutex_exit(9) and mutex_enter(9) during
waiting nextdma(4) interrupts in MD esp_dma_intr() handler.

This could be wrong and the interrupt handler for nextdma should
be reorganized, but it just works.

Should be pulled up to netbsd-10 and netbsd-9.
 1.50.26.2 15-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #88):

sys/arch/next68k/next68k/nextrom.h: revision 1.13
sys/arch/next68k/dev/nextdisplayvar.h: revision 1.6
sys/arch/next68k/dev/intiovar.h: revision 1.8
sys/arch/next68k/dev/nextcons.c: revision 1.12
sys/arch/next68k/next68k/locore.s: revision 1.69
sys/arch/next68k/dev/nextcons.c: revision 1.13
sys/arch/next68k/dev/nextcons.c: revision 1.14
sys/arch/next68k/dev/nextdisplay.c: revision 1.30
sys/arch/next68k/stand/boot/boot.c: revision 1.13
sys/arch/next68k/next68k/nextrom.c: revision 1.28
sys/arch/next68k/next68k/nextrom.c: revision 1.29
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.46
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.47
sys/arch/next68k/include/cpu.h: revision 1.52
sys/arch/next68k/dev/intio.c: revision 1.17
sys/arch/next68k/dev/intio.c: revision 1.18
sys/arch/next68k/dev/intio.c: revision 1.19
sys/arch/next68k/next68k/locore.s: revision 1.72
sys/arch/next68k/stand/boot/version: revision 1.6
sys/arch/next68k/include/bus_space.h: revision 1.21
sys/arch/next68k/include/bus_space.h: revision 1.22
sys/arch/next68k/dev/nextdisplay.c: revision 1.26
sys/arch/next68k/include/bus_space.h: revision 1.23
sys/arch/next68k/dev/nextdisplay.c: revision 1.27
sys/arch/next68k/dev/nextdisplay.c: revision 1.28
sys/arch/next68k/dev/nextdisplay.c: revision 1.29

Misc KNF and cosmetics.

Use proper C99 int types.

Remove trailing spaces and TABs.

Handle NeXT Turbo VRAM regions properly.
Info from Andreas Grabher on port-next68k@:
https://mail-index.netbsd.org/port-next68k/2023/02/06/msg000052.html

Also refactor bus_space_map(9) and fix (unused) bus_space_mmap(9).

Add and check machine type NeXT_CUBE_TURBO (type 8).
Info from Andreas Grabher on port-next68k@.

NeXT Turbo Color doesn't have NEXT_P_C16_CMD_REG.
Info from Andreas Grabher on port-next68k@.

Bump version again to denote NeXT_CUBE_TURBO support.
 1.50.26.1 01-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #63):

sys/arch/next68k/next68k/machdep.c: revision 1.117
sys/arch/next68k/dev/esp.c: revision 1.65
sys/arch/next68k/include/cpu.h: revision 1.51
sys/arch/next68k/include/bus_space.h: revision 1.20
sys/arch/next68k/next68k/clock.c: revision 1.13

next68k: Fix delay_divisor value for proper delay(9) on 68040.

next68k: Specify proper constraints for bus_space_read region and multi ops.

These functions write the read data into memory at a specified pointer,
but without the "memory" constraint gcc could optimize out these ops
if the memory is allocated on local stack.

With this fix nextkbd(4) works again.
Should be pulled up to netbsd-10 and netbsd-9.

next68k: Fix silent stall of next68k esp(4) SCSI.

next68k esp(4) driver requires nextdma(4) interrupts at ipl 6
during ncr53c9x_intr() for esp(4) at ipl 3. It worked on netbsd-5
and prior, but on netbsd-5 splbio() was changed from ipl 3 to 6
for SMP support and on netbsd-6 ncr53c9x driver was changed to
use mutex(9) instead of simple_lock(9), so nextdma interrupts
were no longer raised during ncr53c9x interrupt handler.

For now, just call mutex_exit(9) and mutex_enter(9) during
waiting nextdma(4) interrupts in MD esp_dma_intr() handler.

This could be wrong and the interrupt handler for nextdma should
be reorganized, but it just works.

Should be pulled up to netbsd-10 and netbsd-9.
 1.3 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.
 1.2 12-May-2001  chs branches: 1.2.8; 1.2.174;
switch next68k to ELF. highlight include:
add "%" prefix to register names in assembly code.
change assembly functions to return pointer values in %a0 instead of %d0.
C symbols no longer prepend an underscore, adjust assembly code for this.
32-bit values are now 32-bit aligned instead of 16-bit aligned,
adjust structure packing and padding to override this where necessary.
make EXEC_ELF std, make EXEC_AOUT and COMPAT_AOUT_M68K optional.
use the MI loadfile() instead of several home-grown versions.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj branches: 1.1.1.1.26;
Initial import of NetBSD/next68k.
 1.1.1.1.26.1 21-Jun-2001  nathanw Catch up to -current.
 1.2.174.1 03-Dec-2017  jdolecek update from HEAD
 1.2.8.2 12-May-2001  chs switch next68k to ELF. highlight include:
add "%" prefix to register names in assembly code.
change assembly functions to return pointer values in %a0 instead of %d0.
C symbols no longer prepend an underscore, adjust assembly code for this.
32-bit values are now 32-bit aligned instead of 16-bit aligned,
adjust structure packing and padding to override this where necessary.
make EXEC_ELF std, make EXEC_AOUT and COMPAT_AOUT_M68K optional.
use the MI loadfile() instead of several home-grown versions.
 1.2.8.1 12-May-2001  chs file db_machdep.h was added on branch nathanw_sa on 2001-05-12 22:35:30 +0000
 1.7 30-Aug-2011  bouyer 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 11-Dec-2005  christos merge ktrace-lwp.
 1.5 12-Jun-2005  dyoung Make disklabel(8) and fdisk(8) into "host tools " last step: build
and install ${TOOLDIR}/bin/${MACHINE_GNU_PLATFORM}-disklabel,
${TOOLDIR}/bin/${MACHINE_GNU_PLATFORM}-fdisk by "reaching over" to
the sources in ${NETBSDSRCDIR}/sbin/{disklabel fdisk}/.

To avoid clashes with a build-host's header files, especially on
*BSD, the host-tools versions of fdisk and disklabel search for
#includes such as disklabel.h, disklabel_acorn.h, disklabel_gpt.h,
and bootinfo.h in a new #includes namespace, nbinclude/. That is,
they #include <nbinclude/sys/disklabel.h>, <nbinclude/machine/disklabel.h>,
<nbinclude/sparc64/disklabel.h>, instead of <sys/disklabel.h> and
such. I have also updated the system headers to #include from
nbinclude/-space when HAVE_NBTOOL_CONFIG_H is #defined.
 1.4 15-Nov-2003  bouyer Commit changes proposed on tech-kern Thu, 6 Nov 2003
- factor out disksubr.c between sun3, sparc and sparc64. Keep the sun3
groveling code to find a NetBSD disklabel in the first sector (so that it
can find a label at the old sun3 LABELOFFSET) as a fallback is not
label at LABELOFFSET, or sun label is present.
- Fix the sun3 LABELOFFSET (was 64, but the kernel wrote the NetBSD label at
128)
- Make next68k disksubr.c always write a next-compatible disklabel.
- remove #ifdef __sparc__ hack from disklabel(8), and change it to issue
a DIOCWDINFO after writing the disklabel to the raw partition in the
-r/-I case (so that the kernel can convert the label if needed).
 1.3 27-Oct-2003  cl move structs nextstep_disklabel/cpu_partition and appendant #defines
to sys/sys/bootblock.h
- rename to next68k_disklabel and next68k_partition
- use {u,}int{8,16,32}_t instead of char/short/int (suggested by D. Laight)
 1.2 11-Jul-2002  christos branches: 1.2.6;
Apply patches from Christian Limpach:

- NeXT label reading support
- SCSI dma fixes
- media support for if_xe.c

Some of these need more cleanup, but at least make SCSI support usable on
the NeXT.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj branches: 1.1.1.1.28; 1.1.1.1.32; 1.1.1.1.40;
Initial import of NetBSD/next68k.
 1.1.1.1.40.1 16-Jul-2002  gehenna catch up with -current.
 1.1.1.1.32.1 01-Aug-2002  nathanw Catch up to -current.
 1.1.1.1.28.1 06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.2.6.4 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.2.6.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.2.6.2 18-Sep-2004  skrll Sync with HEAD.
 1.2.6.1 03-Aug-2004  skrll Sync with HEAD
 1.1 12-Jul-1998  thorpej Basic elf_machdep.h for m68k; doesn't include relocations, yet.
 1.2 17-Mar-2000  mycroft In the `MY THAT'S GROSS' department...
Eliminate the recursive include of machine/endian.h from sys/endian.h.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj branches: 1.1.1.1.14;
Initial import of NetBSD/next68k.
 1.1.1.1.14.1 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.
 1.1 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 20:18:15 +0000
 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 11:36:33 +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 12:09:39 +0000
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2 30-Aug-1999  mycroft A foolish consistency.
 1.1 15-Mar-1999  minoura Pullin m68k/ieee.h.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 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 22:38:41 +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 17:54:24 +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 17:13:15 +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 17:54:24 +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 15:29:10 +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 17:54:24 +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 12:19:59 +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 17:54:25 +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 20:18:15 +0000
 1.25 19-Jan-2024  thorpej Add _KERNEL guards around most of the definitions in these files.
 1.24 18-Jan-2024  thorpej Switch next68k over to common interrupt dispatch and G/C __HAVE_LEGACY_INTRCNT.
Also included is G/C of the old ssir stuff that's no longer used.
 1.23 11-Jul-2023  riastradh next68k/intr.h: Expose ipl_cookie_t to _KMEMUSER for crash(8).
 1.22 19-Apr-2018  christos branches: 1.22.32;
s/static inline/static __inline/g for consistency.
 1.21 26-Jun-2008  isaki branches: 1.21.82;
Unify splraiseipl(9) implementation among m68k ports,
discussed with tsutsui@ on port-m68k.

For next68k:
- export ipl2psl_table[] and make it uint16_t
- make makeiplcookie(9) inline
- put PSL_S bit into ipl2psl_table[] rather than adding it in makeiplcookie(9)
- define both IPL_SCHED and IPL_HIGH independently to avoid confusion
 1.20 03-Dec-2007  ad branches: 1.20.14; 1.20.18; 1.20.20; 1.20.22;
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.
 1.19 11-Mar-2007  thorpej branches: 1.19.16; 1.19.18; 1.19.24;
- 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.
 1.18 08-Mar-2007  tsutsui branches: 1.18.2;
MI softintr(9)'fy. Tested by bouyer@.
See also:
http://mail-index.netbsd.org/port-next68k/2007/03/06/0000.html
 1.17 16-Feb-2007  ad branches: 1.17.2;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.
 1.16 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.
 1.15 24-Dec-2005  perry branches: 1.15.20; 1.15.22;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.
 1.14 11-Dec-2005  christos merge ktrace-lwp.
 1.13 07-Sep-2005  drochner namespace sanity: kill includes which are not
used directly
 1.12 19-Jan-2005  chs branches: 1.12.8;
de-__P, remove register, ansify.
 1.11 11-Sep-2002  mycroft branches: 1.11.6; 1.11.14;
Comprehensive patches from Christian Limpach:
* Fix problems with the DMA and SCSI drivers.
* Make turbo machines sort of work.
Additional fixes from me:
* Determine if we're a turbo at boot time, by looking at the ROM machine type.
* Set the display size correctly (1120 pixels wide, but padded to 1152 only on
non-turbo machines).
Caveats:
* SCSI doesn't work on the turbo (or at least it blows chunks with no devices
attached).
* Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on
turbo machines).
* The boot block is prone to timing out.
 1.10 13-Apr-2001  thorpej branches: 1.10.2; 1.10.8;
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.
 1.9 14-Jan-2001  thorpej branches: 1.9.2;
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).
 1.8 22-Aug-2000  thorpej Add spllock(). See spl(9) for details.
 1.7 21-Aug-2000  thorpej Make sure we provide splsched() as described in spl(9).
 1.6 05-Aug-1999  thorpej branches: 1.6.2;
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.
 1.5 04-Aug-1999  dbj fixed prototype of allocate_sir()
 1.4 03-Jul-1999  dbj renamed splscc to splserial to match spl(9) man page
changed most of the spl* to use _splraise to match current usage
this fixes an observed bug where zstty_attach was calling splzs causing
interrupts to be turned on prematurely.
 1.3 15-Jun-1999  kleink Slightly rearrange the SSIR inline assembly implementation in order to avoid
making assumptions on C symbol name prefixes.
 1.2 10-Nov-1998  dbj branches: 1.2.6;
Sync'ed more files and routines with mvme port in prepartion for UVM.
Now use generic m68k cachops everywhere rather than defining them in locore.s
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2.6.2 02-Aug-1999  thorpej Update from trunk.
 1.2.6.1 21-Jun-1999  thorpej Sync w/ -current.
 1.6.2.3 21-Apr-2001  bouyer Sync with HEAD
 1.6.2.2 18-Jan-2001  bouyer Sync with head (for UBC+NFS fixes, mostly).
 1.6.2.1 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.
 1.10.8.2 17-Sep-2002  nathanw Catch up to -current.
 1.10.8.1 13-Apr-2001  nathanw file intr.h was added on branch nathanw_sa on 2002-09-17 21:16:35 +0000
 1.10.2.1 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
 1.11.14.1 29-Apr-2005  kent sync with -current
 1.11.6.2 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.11.6.1 24-Jan-2005  skrll Sync with HEAD.
 1.12.8.5 07-Dec-2007  yamt sync with head
 1.12.8.4 03-Sep-2007  yamt sync with head.
 1.12.8.3 26-Feb-2007  yamt sync with head.
 1.12.8.2 30-Dec-2006  yamt sync with head.
 1.12.8.1 21-Jun-2006  yamt sync with head.
 1.15.22.1 02-Oct-2006  yamt implement splraiseipl/makeiplcookie for next68k.
 1.15.20.1 12-Jan-2007  ad Sync with head.
 1.17.2.1 12-Mar-2007  rmind Sync with HEAD.
 1.18.2.2 03-Dec-2007  ad Sync with HEAD.
 1.18.2.1 13-Mar-2007  ad Sync with head.
 1.19.24.1 08-Dec-2007  mjf Sync with HEAD.
 1.19.18.1 09-Jan-2008  matt sync with HEAD
 1.19.16.1 09-Dec-2007  jmcneill Sync with HEAD.
 1.20.22.1 27-Jun-2008  simonb Sync with head.
 1.20.20.1 18-Sep-2008  wrstuden Sync with wrstuden-revivesa-base-2.
 1.20.18.1 04-May-2009  yamt sync with head.
 1.20.14.1 29-Jun-2008  mjf Sync with HEAD.
 1.21.82.1 22-Apr-2018  pgoyette Sync with HEAD
 1.22.32.1 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.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.5 06-Aug-2014  joerg Consistently define WARN in a way that passes format string checks, i.e.
always uses the same number of arguments as given in the format string.
 1.4 28-Apr-2008  martin branches: 1.4.44; 1.4.60;
Remove clause 3 and 4 from TNF licenses
 1.3 25-Jan-2006  christos branches: 1.3.72; 1.3.74; 1.3.76;
free -> dealloc
unsigned -> size_t for alloc/dealloc
 1.2 31-Oct-2001  thorpej branches: 1.2.2; 1.2.34; 1.2.46;
Split elf32 vs. elf64 handling in loadfile(), including support for
each separately and explicitly. BOOT_ELF is now BOOT_ELF32 and
BOOT_ELF64, and ELFSIZE should no longer be defined in loadfile_machdep.h.
 1.1 12-May-2001  chs branches: 1.1.2; 1.1.4; 1.1.8;
switch next68k to ELF. highlight include:
add "%" prefix to register names in assembly code.
change assembly functions to return pointer values in %a0 instead of %d0.
C symbols no longer prepend an underscore, adjust assembly code for this.
32-bit values are now 32-bit aligned instead of 16-bit aligned,
adjust structure packing and padding to override this where necessary.
make EXEC_ELF std, make EXEC_AOUT and COMPAT_AOUT_M68K optional.
use the MI loadfile() instead of several home-grown versions.
 1.1.8.1 12-Nov-2001  thorpej Sync the thorpej-mips-cache branch with -current.
 1.1.4.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.1.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.2.46.1 01-Feb-2006  yamt sync with head.
 1.2.34.1 21-Jun-2006  yamt sync with head.
 1.2.2.2 31-Oct-2001  thorpej Split elf32 vs. elf64 handling in loadfile(), including support for
each separately and explicitly. BOOT_ELF is now BOOT_ELF32 and
BOOT_ELF64, and ELFSIZE should no longer be defined in loadfile_machdep.h.
 1.2.2.1 31-Oct-2001  thorpej file loadfile_machdep.h was added on branch nathanw_sa on 2001-10-31 17:20:49 +0000
 1.3.76.1 16-May-2008  yamt sync with head.
 1.3.74.1 18-May-2008  yamt sync with head.
 1.3.72.1 02-Jun-2008  mjf Sync with HEAD.
 1.4.60.1 10-Aug-2014  tls Rebase.
 1.4.44.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 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 20:18:15 +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 05:55:58 +0000
 1.1 23-Dec-1999  kleink branches: 1.1.6;
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.
 1.1.6.2 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 23-Dec-1999  bouyer file math.h was added on branch thorpej_scsipi on 2000-11-20 20:18:16 +0000
 1.2 18-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>.
 1.2 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 09:07:41 +0000
 1.13 04-Feb-2023  tsutsui Remove leftover "last kernel PT page" settings derived from hp300.

Whilehere, also remove VM definitions for obsolete COMPAT_HPUX stuff.

All hp300 machines has RAMs at a region from the highest address
i.e. 0xFFFFFFFF to smaller address (as HP claims "it's the MSB first"),
so kernels have to prepare PA==KVA mappings as the "last PT page" to
guarantee the running kernel works both before and after the MMU is
turned on. For such a special mapping, we have to set up necessary
segment table and page table during early startup, in pmap_bootstrap()
invoked from locore.s.

On the other hand, NeXT machines have RAMs at a region from 0x40000000
to below (i.e. to larger address) so we still need a PA==KVA mapping.
However currently NetBSD/next68k just uses the transparent translation
registers to achieve the PA==KVA mapping, so unlike hp300 we don't have
to prepare special segment table and page table for it.

Note many other m68k ports (like luna68k, news68k, x68k etc.) have
RAMs at a region from 0x00000000 so usually we can assume PA==KVA
and don't have to bother to prepare such speicial mappings.

No user visible changes (except now freed wasted pages for the tables).
Tested on my NeXTstation slab.
 1.12 10-Feb-2012  para branches: 1.12.52; 1.12.78;
proper sizing of kmem_arena on different ports

PR port-i386/45946: Kernel locks up in VMEM system
 1.11 08-Feb-2011  rmind branches: 1.11.4; 1.11.8;
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@.
 1.10 11-Dec-2009  tsutsui branches: 1.10.4; 1.10.6; 1.10.8;
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.
 1.9 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.
 1.8 11-Dec-2005  christos branches: 1.8.78;
merge ktrace-lwp.
 1.7 07-Sep-2005  drochner include machine/intr.h only in the _KERNEL case, as
most other ports do.
(In the -KERNEL case, it is needed because the spl*()
stuff ought to be pulled in by <sys/param.h> per the
manpages.)
This saves some namespace headaches.
 1.6 19-Jan-2005  chs branches: 1.6.8;
de-__P, remove register, ansify.
 1.5 07-Aug-2003  agc branches: 1.5.8;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.4 03-Nov-2002  chs branches: 1.4.6;
merge pmap.h for all 4k-page motorola-MMU (or compatible) m68k platforms.
 1.3 11-Feb-2000  thorpej branches: 1.3.12;
Update for the NKMEMPAGES changes.
 1.2 04-Dec-1999  ragge CL* discarding.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj branches: 1.1.1.1.14; 1.1.1.1.20;
Initial import of NetBSD/next68k.
 1.1.1.1.20.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.1.1.1.14.1 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.
 1.3.12.1 11-Nov-2002  nathanw Catch up to -current
 1.4.6.5 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.4.6.4 24-Jan-2005  skrll Sync with HEAD.
 1.4.6.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.4.6.2 18-Sep-2004  skrll Sync with HEAD.
 1.4.6.1 03-Aug-2004  skrll Sync with HEAD
 1.5.8.1 29-Apr-2005  kent sync with -current
 1.6.8.1 21-Jun-2006  yamt sync with head.
 1.8.78.1 11-Mar-2010  yamt sync with head
 1.10.8.1 17-Feb-2011  bouyer Sync with HEAD
 1.10.6.1 06-Jun-2011  jruoho Sync with HEAD.
 1.10.4.1 05-Mar-2011  rmind sync with head
 1.11.8.1 18-Feb-2012  mrg merge to -current.
 1.11.4.1 17-Apr-2012  yamt sync with head
 1.12.78.1 12-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #77):

sys/arch/next68k/include/vmparam.h: revision 1.29
sys/arch/next68k/next68k/machdep.c: revision 1.118
sys/arch/next68k/include/param.h: revision 1.13
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.45
sys/arch/next68k/next68k/locore.s: revision 1.70
sys/arch/next68k/next68k/locore.s: revision 1.71

Use explicit CPU strings and remove hp300 derived stuff.

Remove #ifdef'ed out hp300 specific stuff.

Remove leftover "last kernel PT page" settings derived from hp300.

Whilehere, also remove VM definitions for obsolete COMPAT_HPUX stuff.

All hp300 machines has RAMs at a region from the highest address
i.e. 0xFFFFFFFF to smaller address (as HP claims "it's the MSB first"),
so kernels have to prepare PA==KVA mappings as the "last PT page" to
guarantee the running kernel works both before and after the MMU is
turned on. For such a special mapping, we have to set up necessary
segment table and page table during early startup, in pmap_bootstrap()
invoked from locore.s.

On the other hand, NeXT machines have RAMs at a region from 0x40000000
to below (i.e. to larger address) so we still need a PA==KVA mapping.
However currently NetBSD/next68k just uses the transparent translation
registers to achieve the PA==KVA mapping, so unlike hp300 we don't have
to prepare special segment table and page table for it.

Note many other m68k ports (like luna68k, news68k, x68k etc.) have
RAMs at a region from 0x00000000 so usually we can assume PA==KVA
and don't have to bother to prepare such speicial mappings.

No user visible changes (except now freed wasted pages for the tables).

Tested on my NeXTstation slab.
 1.12.52.1 12-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #1590):

sys/arch/next68k/include/vmparam.h: revision 1.29
sys/arch/next68k/next68k/machdep.c: revision 1.118
sys/arch/next68k/include/param.h: revision 1.13
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.45
sys/arch/next68k/next68k/locore.s: revision 1.70
sys/arch/next68k/next68k/locore.s: revision 1.71

Use explicit CPU strings and remove hp300 derived stuff.

Remove #ifdef'ed out hp300 specific stuff.

Remove leftover "last kernel PT page" settings derived from hp300.

Whilehere, also remove VM definitions for obsolete COMPAT_HPUX stuff.

All hp300 machines has RAMs at a region from the highest address
i.e. 0xFFFFFFFF to smaller address (as HP claims "it's the MSB first"),
so kernels have to prepare PA==KVA mappings as the "last PT page" to
guarantee the running kernel works both before and after the MMU is
turned on. For such a special mapping, we have to set up necessary
segment table and page table during early startup, in pmap_bootstrap()
invoked from locore.s.

On the other hand, NeXT machines have RAMs at a region from 0x40000000
to below (i.e. to larger address) so we still need a PA==KVA mapping.
However currently NetBSD/next68k just uses the transparent translation
registers to achieve the PA==KVA mapping, so unlike hp300 we don't have
to prepare special segment table and page table for it.

Note many other m68k ports (like luna68k, news68k, x68k etc.) have
RAMs at a region from 0x00000000 so usually we can assume PA==KVA
and don't have to bother to prepare such speicial mappings.

No user visible changes (except now freed wasted pages for the tables).

Tested on my NeXTstation slab.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.16 27-Dec-2023  thorpej Define the values for the 68040 TT registers in terms of the definitions in
<m68k/mmu_40.h> rather than using magic numbers.
 1.15 03-Nov-2002  chs merge pmap.h for all 4k-page motorola-MMU (or compatible) m68k platforms.
 1.14 22-Sep-2002  chs it really helps to get the stub right before cutting + pasting it 27 times.
alas, I did not. doh.
 1.13 22-Sep-2002  chs add pmap_remove_all() hook (empty on most platforms so far).
 1.12 11-Sep-2002  mycroft Comprehensive patches from Christian Limpach:
* Fix problems with the DMA and SCSI drivers.
* Make turbo machines sort of work.
Additional fixes from me:
* Determine if we're a turbo at boot time, by looking at the ROM machine type.
* Set the display size correctly (1120 pixels wide, but padded to 1152 only on
non-turbo machines).
Caveats:
* SCSI doesn't work on the turbo (or at least it blows chunks with no devices
attached).
* Media selection doesn't work on the turbo (the BMAP stuff doesn't exist on
turbo machines).
* The boot block is prone to timing out.
 1.11 10-Sep-2001  chris branches: 1.11.4;
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.
 1.10 26-May-2001  chs branches: 1.10.2; 1.10.4;
replace vm_page_t with struct vm_page *.
 1.9 26-May-2001  chs replace {simple_,}lock{_data,}_t with struct {simple,}lock {,*}.
 1.8 22-Apr-2001  thorpej Undo a misguided previous change to the pmap_update() API.
 1.7 22-Apr-2001  thorpej Give pmap_update() an argument (a pmap_t) so that it knows which
pmap it should be updating.
 1.6 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).
 1.5 26-Feb-1999  is branches: 1.5.8; 1.5.20;
next68k specific part of PR 6152 fix
 1.4 15-Feb-1999  hubertf RCS ID police
 1.3 16-Jan-1999  chuck MNN is no longer optional
 1.2 28-Aug-1998  dbj Updated many of the pmap files to use current versions from the
mvme68k port. The next68k port now uses MACHINE_NEW_NONCONTIG.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.5.20.1 21-Jun-2001  nathanw Catch up to -current.
 1.5.8.1 23-Apr-2001  bouyer Sync with HEAD.
 1.10.4.1 01-Oct-2001  fvdl Catch up with -current.
 1.10.2.2 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
 1.10.2.1 13-Sep-2001  thorpej Update the kqueue branch to HEAD.
 1.11.4.7 11-Nov-2002  nathanw Catch up to -current
 1.11.4.6 18-Oct-2002  nathanw Catch up to -current.
 1.11.4.5 17-Sep-2002  nathanw Catch up to -current.
 1.11.4.4 02-Jul-2002  nathanw Adjust whitespace so that this matches the trunk.
 1.11.4.3 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).
 1.11.4.2 18-Nov-2001  scw MD Scheduler Activation bits for Next68k.
Compile-tested only.
 1.11.4.1 10-Sep-2001  scw file pmap.h was added on branch nathanw_sa on 2001-11-18 18:43:07 +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 08:38:26 +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 13:45:32 +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 02:18:37 +0000
 1.3 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.)
 1.2 28-Aug-1998  dbj branches: 1.2.26; 1.2.30; 1.2.38;
Updated many of the pmap files to use current versions from the
mvme68k port. The next68k port now uses MACHINE_NEW_NONCONTIG.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2.38.1 16-Jul-2002  gehenna catch up with -current.
 1.2.30.2 01-Aug-2002  nathanw Catch up to -current.
 1.2.30.1 18-Nov-2001  scw MD Scheduler Activation bits for Next68k.
Compile-tested only.
 1.2.26.1 06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.3 14-Oct-2002  chs merge pte.h for m68k w/ motorola or compatible MMU
(only 4k-page platforms so far).
 1.2 28-Aug-1998  dbj branches: 1.2.30;
Updated many of the pmap files to use current versions from the
mvme68k port. The next68k port now uses MACHINE_NEW_NONCONTIG.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2.30.1 18-Oct-2002  nathanw Catch up to -current.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 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 09:07:41 +0000
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2 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.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 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 13:57:58 +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 14:54:24 +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; 1.2.10;
Pull in the right generic m68k header. (Where was my mind?)
 1.1 19-Apr-1999  kleink Add COMPAT_SVR4 for m68k.
 1.2.10.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.2.6.1 15-Nov-1999  fvdl Sync with -current
 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.
 1.2.2.1 21-Jun-1999  thorpej Sync w/ -current.
 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
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.8 18-Jan-2024  thorpej Switch next68k over to common interrupt dispatch and G/C __HAVE_LEGACY_INTRCNT.
Also included is G/C of the old ssir stuff that's no longer used.
 1.7 01-Apr-2021  simonb Define __HAVE_LEGACY_INTRCNT to indicate this port uses legacy intrcnt
interrupt accounting.
 1.6 20-Jan-2008  joerg branches: 1.6.110; 1.6.112;
Now that __HAVE_TIMECOUNTER and __HAVE_GENERIC_TODR are invariants,
remove the conditionals and the code associated with the undef case.
 1.5 17-Oct-2007  garbled branches: 1.5.2; 1.5.8;
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.
 1.4 14-Jul-2007  ad branches: 1.4.10;
Generic soft interrupts are mandatory.
 1.3 08-Mar-2007  tsutsui branches: 1.3.2; 1.3.10;
MI softintr(9)'fy. Tested by bouyer@.
See also:
http://mail-index.netbsd.org/port-next68k/2007/03/06/0000.html
 1.2 11-Sep-2006  gdamore branches: 1.2.6;
Convert next68k to generic-todr and timecounter.
Tested by bouyer@.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj branches: 1.1.1.1.64; 1.1.1.1.82; 1.1.1.1.94;
Initial import of NetBSD/next68k.
 1.1.1.1.94.1 18-Nov-2006  ad Sync with head.
 1.1.1.1.82.1 14-Sep-2006  yamt sync with head.
 1.1.1.1.64.3 21-Jan-2008  yamt sync with head
 1.1.1.1.64.2 03-Sep-2007  yamt sync with head.
 1.1.1.1.64.1 30-Dec-2006  yamt sync with head.
 1.2.6.1 12-Mar-2007  rmind Sync with HEAD.
 1.3.10.1 03-Oct-2007  garbled Sync with HEAD
 1.3.2.1 15-Jul-2007  ad Sync with head.
 1.4.10.2 23-Mar-2008  matt sync with HEAD
 1.4.10.1 06-Nov-2007  matt sync with HEAD
 1.5.8.1 23-Jan-2008  bouyer Sync with HEAD.
 1.5.2.1 18-Feb-2008  mjf Sync with HEAD.
 1.6.112.1 03-Apr-2021  thorpej Sync with HEAD.
 1.6.110.1 03-Apr-2021  thorpej Sync with HEAD.
 1.2 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.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.2 18-Jan-2024  thorpej Switch next68k over to common interrupt dispatch and G/C __HAVE_LEGACY_INTRCNT.
Also included is G/C of the old ssir stuff that's no longer used.
 1.1 13-Jan-2024  thorpej Switch next68k over to the common m68k vector table.
 1.31 08-Feb-2025  tsutsui Bump DFLSSIZ from 512KB to 2MB on all hp300 pmap m68k ports.

Some modern applications could require 512KB buffer on stack and
no particular comment on port-m68k@:
https://mail-index.netbsd.org/port-m68k/2025/02/02/msg000893.html
 1.30 04-Feb-2023  tsutsui branches: 1.30.6;
Remove trailing spaces and TABs.
 1.29 04-Feb-2023  tsutsui Remove leftover "last kernel PT page" settings derived from hp300.

Whilehere, also remove VM definitions for obsolete COMPAT_HPUX stuff.

All hp300 machines has RAMs at a region from the highest address
i.e. 0xFFFFFFFF to smaller address (as HP claims "it's the MSB first"),
so kernels have to prepare PA==KVA mappings as the "last PT page" to
guarantee the running kernel works both before and after the MMU is
turned on. For such a special mapping, we have to set up necessary
segment table and page table during early startup, in pmap_bootstrap()
invoked from locore.s.

On the other hand, NeXT machines have RAMs at a region from 0x40000000
to below (i.e. to larger address) so we still need a PA==KVA mapping.
However currently NetBSD/next68k just uses the transparent translation
registers to achieve the PA==KVA mapping, so unlike hp300 we don't have
to prepare special segment table and page table for it.

Note many other m68k ports (like luna68k, news68k, x68k etc.) have
RAMs at a region from 0x00000000 so usually we can assume PA==KVA
and don't have to bother to prepare such speicial mappings.

No user visible changes (except now freed wasted pages for the tables).
Tested on my NeXTstation slab.
 1.28 05-Dec-2021  msaitoh branches: 1.28.4;
s/from from/from/ in comment.
 1.27 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.
 1.26 28-Jun-2019  tsutsui branches: 1.26.2; 1.26.4;
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?
 1.25 02-Feb-2017  rin branches: 1.25.14;
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
 1.24 02-Feb-2017  rin PR port-mac68k/51923
Remove unused SYSPTSIZE and USRPTSIZE from m68k ports.
Ok jklos
 1.23 08-Feb-2011  rmind branches: 1.23.14; 1.23.32; 1.23.36; 1.23.40;
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@.
 1.22 06-Nov-2010  uebayasi branches: 1.22.2; 1.22.4;
Remove incomplete, never worked dynamic run-time memory registration
(uvm_page_physload(9)). This functionality will be re-added later.
 1.21 08-Dec-2009  tsutsui branches: 1.21.2; 1.21.4;
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.
 1.20 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.
 1.19 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.
 1.18 11-Dec-2005  christos branches: 1.18.78; 1.18.86; 1.18.92;
merge ktrace-lwp.
 1.17 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.
 1.16 07-Aug-2003  agc branches: 1.16.8; 1.16.10;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.15 02-Apr-2003  thorpej branches: 1.15.2;
Use PAGE_SIZE rather than NBPG.
 1.14 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.
 1.13 15-Nov-2001  soren MAXSLP is defined to be a machine-independent scheduling parameter,
so move it into sys/param.h.
 1.12 01-May-2001  thorpej branches: 1.12.2; 1.12.8;
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.
 1.11 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.
 1.10 01-Dec-2000  tsutsui branches: 1.10.2;
Remove unused pcbb() macro.
 1.9 14-Nov-2000  thorpej We use 4K pages on the NeXT. Define PAGE_SIZE and friends to be
compile-time constants.
 1.8 11-Feb-2000  thorpej Update for the NKMEMPAGES changes.
 1.7 26-Jan-2000  tsutsui Remove obsoleted macros.
 1.6 04-Dec-1999  ragge CL* discarding.
 1.5 26-Apr-1999  thorpej branches: 1.5.2; 1.5.8;
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.
 1.4 16-Jan-1999  chuck branches: 1.4.4;
MNN is no longer optional
 1.3 14-Nov-1998  dbj Finished changes to use UVM on next68k.
Turn on UVM by default in GENERIC kernel.
 1.2 28-Aug-1998  dbj Updated many of the pmap files to use current versions from the
mvme68k port. The next68k port now uses MACHINE_NEW_NONCONTIG.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj Initial import of NetBSD/next68k.
 1.4.4.1 21-Jun-1999  thorpej Sync w/ -current.
 1.5.8.1 27-Dec-1999  wrstuden Pull up to last week's -current.
 1.5.2.3 08-Dec-2000  bouyer Sync with HEAD.
 1.5.2.2 22-Nov-2000  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.
 1.10.2.1 21-Jun-2001  nathanw Catch up to -current.
 1.12.8.3 11-Dec-2002  thorpej Sync with HEAD.
 1.12.8.2 08-Jan-2002  nathanw Catch up to -current.
 1.12.8.1 01-May-2001  nathanw file vmparam.h was added on branch nathanw_sa on 2002-01-08 00:26:58 +0000
 1.12.2.1 10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.15.2.4 01-Apr-2005  skrll Sync with HEAD.
 1.15.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.15.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.15.2.1 03-Aug-2004  skrll Sync with HEAD
 1.16.10.1 23-Feb-2005  yamt change kernel va layout, following mac68k.
 1.16.8.1 29-Apr-2005  kent sync with -current
 1.18.92.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.18.86.1 28-Apr-2009  skrll Sync with HEAD.
 1.18.78.3 11-Mar-2010  yamt sync with head
 1.18.78.2 16-Sep-2009  yamt sync with head
 1.18.78.1 04-May-2009  yamt sync with head.
 1.21.4.1 05-Mar-2011  rmind sync with head
 1.21.2.1 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.)
 1.22.4.1 17-Feb-2011  bouyer Sync with HEAD
 1.22.2.1 06-Jun-2011  jruoho Sync with HEAD.
 1.23.40.1 21-Apr-2017  bouyer Sync with HEAD
 1.23.36.1 20-Mar-2017  pgoyette Sync with HEAD
 1.23.32.1 05-Feb-2017  skrll Sync with HEAD
 1.23.14.1 03-Dec-2017  jdolecek update from HEAD
 1.25.14.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.26.4.1 29-Feb-2020  ad Sync with head.
 1.26.2.2 12-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #1590):

sys/arch/next68k/include/vmparam.h: revision 1.29
sys/arch/next68k/next68k/machdep.c: revision 1.118
sys/arch/next68k/include/param.h: revision 1.13
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.45
sys/arch/next68k/next68k/locore.s: revision 1.70
sys/arch/next68k/next68k/locore.s: revision 1.71

Use explicit CPU strings and remove hp300 derived stuff.

Remove #ifdef'ed out hp300 specific stuff.

Remove leftover "last kernel PT page" settings derived from hp300.

Whilehere, also remove VM definitions for obsolete COMPAT_HPUX stuff.

All hp300 machines has RAMs at a region from the highest address
i.e. 0xFFFFFFFF to smaller address (as HP claims "it's the MSB first"),
so kernels have to prepare PA==KVA mappings as the "last PT page" to
guarantee the running kernel works both before and after the MMU is
turned on. For such a special mapping, we have to set up necessary
segment table and page table during early startup, in pmap_bootstrap()
invoked from locore.s.

On the other hand, NeXT machines have RAMs at a region from 0x40000000
to below (i.e. to larger address) so we still need a PA==KVA mapping.
However currently NetBSD/next68k just uses the transparent translation
registers to achieve the PA==KVA mapping, so unlike hp300 we don't have
to prepare special segment table and page table for it.

Note many other m68k ports (like luna68k, news68k, x68k etc.) have
RAMs at a region from 0x00000000 so usually we can assume PA==KVA
and don't have to bother to prepare such speicial mappings.

No user visible changes (except now freed wasted pages for the tables).

Tested on my NeXTstation slab.
 1.26.2.1 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.
 1.28.4.1 12-Feb-2023  martin Pull up following revision(s) (requested by tsutsui in ticket #77):

sys/arch/next68k/include/vmparam.h: revision 1.29
sys/arch/next68k/next68k/machdep.c: revision 1.118
sys/arch/next68k/include/param.h: revision 1.13
sys/arch/next68k/next68k/pmap_bootstrap.c: revision 1.45
sys/arch/next68k/next68k/locore.s: revision 1.70
sys/arch/next68k/next68k/locore.s: revision 1.71

Use explicit CPU strings and remove hp300 derived stuff.

Remove #ifdef'ed out hp300 specific stuff.

Remove leftover "last kernel PT page" settings derived from hp300.

Whilehere, also remove VM definitions for obsolete COMPAT_HPUX stuff.

All hp300 machines has RAMs at a region from the highest address
i.e. 0xFFFFFFFF to smaller address (as HP claims "it's the MSB first"),
so kernels have to prepare PA==KVA mappings as the "last PT page" to
guarantee the running kernel works both before and after the MMU is
turned on. For such a special mapping, we have to set up necessary
segment table and page table during early startup, in pmap_bootstrap()
invoked from locore.s.

On the other hand, NeXT machines have RAMs at a region from 0x40000000
to below (i.e. to larger address) so we still need a PA==KVA mapping.
However currently NetBSD/next68k just uses the transparent translation
registers to achieve the PA==KVA mapping, so unlike hp300 we don't have
to prepare special segment table and page table for it.

Note many other m68k ports (like luna68k, news68k, x68k etc.) have
RAMs at a region from 0x00000000 so usually we can assume PA==KVA
and don't have to bother to prepare such speicial mappings.

No user visible changes (except now freed wasted pages for the tables).

Tested on my NeXTstation slab.
 1.30.6.1 02-Aug-2025  perseant Sync with HEAD
 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 10:38:38 +0000
 1.8 29-Mar-2008  tsutsui Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.
 1.7 07-Nov-2007  ad branches: 1.7.14;
Merge tty changes from the vmlocking branch.
 1.6 08-Mar-2007  tsutsui branches: 1.6.2; 1.6.18; 1.6.20; 1.6.24; 1.6.26;
MI softintr(9)'fy. Tested by bouyer@.
See also:
http://mail-index.netbsd.org/port-next68k/2007/03/06/0000.html
 1.5 11-Dec-2005  christos branches: 1.5.26;
merge ktrace-lwp.
 1.4 19-Jan-2005  chs branches: 1.4.8;
de-__P, remove register, ansify.
 1.3 07-Aug-2003  agc branches: 1.3.8;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.2 03-Jul-1999  dbj branches: 1.2.36;
renamed splscc to splserial to match spl(9) man page
changed most of the spl* to use _splraise to match current usage
this fixes an observed bug where zstty_attach was calling splzs causing
interrupts to be turned on prematurely.
 1.1 09-Jun-1998  dbj branches: 1.1.1;
Initial revision
 1.1.1.1 09-Jun-1998  dbj branches: 1.1.1.1.10;
Initial import of NetBSD/next68k.
 1.1.1.1.10.1 02-Aug-1999  thorpej Update from trunk.
 1.2.36.4 24-Jan-2005  skrll Sync with HEAD.
 1.2.36.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.2.36.2 18-Sep-2004  skrll Sync with HEAD.
 1.2.36.1 03-Aug-2004  skrll Sync with HEAD
 1.3.8.1 29-Apr-2005  kent sync with -current
 1.4.8.2 15-Nov-2007  yamt sync with head.
 1.4.8.1 03-Sep-2007  yamt sync with head.
 1.5.26.1 12-Mar-2007  rmind Sync with HEAD.
 1.6.26.1 19-Nov-2007  mjf Sync with HEAD.
 1.6.24.1 13-Nov-2007  bouyer Sync with HEAD
 1.6.20.1 08-Nov-2007  matt sync with -HEAD
 1.6.18.1 11-Nov-2007  joerg Sync with HEAD.
 1.6.2.1 03-Dec-2007  ad Sync with HEAD.
 1.7.14.1 03-Apr-2008  mjf Sync with HEAD.

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