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.

branches: 1.38.36;
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.

branches: 1.37.16; 1.37.18;
fenv for m68k

branches: 1.36.10; 1.36.28;
Obsolete pow(4) and rtcalarm(8). Discussed in port-x68k@.
Probably the combination of pow(4) ioctl and rtcalarm(8) does
not work for a long time, and nobody uses them.
I'll rewrite a part about power switch handler as a new device.

branches: 1.35.2;
machine/stdarg.h and machine/varargs.h are gone

Sort

Remove x68k/include/pci_machdep.h.
x68k does not have PCI-bus, and no one refers to it.

branches: 1.32.38; 1.32.40; 1.32.42; 1.32.44;
Stop installing <machine/intr.h> on x68k.
Suggested by simonb@ and tsutsui@.

branches: 1.31.2; 1.31.6;
Merge newlock2 to head.

branches: 1.30.4;
don't install <machine/db_machdep.h>, this is kernel only

branches: 1.29.4; 1.29.8;
merge ktrace-lwp.

branches: 1.28.12;
Populate kbdmap-related definitions to the userland.
Also g/c unused ioctls.
Pointed out by he.

Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.

An unexported header file was #included from an exported header file.
Introduce <machine/opmreg.h> and move some definitions useful to
userland progs.

branches: 1.25.2;
Merge the nathanw_sa branch.

Remove KDIR=, since SYS_INCLUDE=symlinks and KDIR are not supported any more.

Sort.

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.

branches: 1.21.2;
bsd_audioio.h was obsolated by vs0

No point in installing svr4_machdep.h.

branches: 1.19.2; 1.19.8;
Remove unneeded whitespace.

Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 specified-width integer type limits.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 integer constant macros.
Tidy Makefiles up a little.

Add definitions of C99 minimum-width and greatest-width integer types.
XXX Fastest minimum-width integer types haven't been decided upon yet.

branches: 1.14.2;
Add <machine/int_types.h>, which provides namespace-pure definitions
of exact-width integer types.

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>.

Install "machineendian_machdep.h".

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.

branches: 1.10.2;
Add COMPAT_SVR4 for m68k.

branches: 1.9.4;
Merged minoura_x68k_bus_h branch.

Pullin m68k/ieee.h.

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.

branches: 1.6.2;
Added intr.h

Added an include file on port dependent boot information.

Moved parioctl.h to the system header directory.

Moved grfioctl.h and iteioctl.h to the public include directory.

Add elf_machdep.h to the INCS list.

Rework the way kernel include files are installed. In the new method,
as with user-land programs, include files are installed by each directory
in the tree that has includes to install. (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change. Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.

Switch all users (except ia64) of custom machine/ansi.h to common_ansi.h

Deduplicate the code among ports and poll definitions of types
directly from a compiler.

This fixes miscompilation of certain programs that instruct compilers
to generate code for different types. This bug has been detected with
-fshort-wchar in EFI firmware.

Proposed and discussed on a mailing list (twice).

Itanium uses custom !ELF fallback switch, temporarily leave it as it is.

branches: 1.1.1;
Initial revision

repoint at shared aout_machdep.h, not exec.h

Use <m68k/exec.h>.

branches: 1.1.1;
Initial revision

NetBSD/x68k, by Masaru Oki.

Switch to 2-clause license.

branches: 1.1.2; 1.1.4; 1.1.8;
Purge x68k_config_found() to simplify consinit routine.
config_console() calls initialization of grf, ite, mfp
directly, instead of tracing special device tree with an
emulated 'struct device'.

branches: 1.4.4;
Embed the version number of the interface between the bootloader and
kernel. See amiga.

branches: 1.3.14; 1.3.16;
First step toward network boot.
By Takeshi Nakayama <tn@catvmics.ne.jp>.

Make egcs happy.

Added an include file on port dependent boot information.

bsd_audioio.h was obsolated by vs0

branches: 1.2.30; 1.2.34;
RCSID Police.

branches: 1.1.1;
Initial revision

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.

Merged minoura_x68k_bus_h branch.

branches: 1.1.2;
Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.

Provide PRIxBUSADDR, PRIxBUSSIZE, PRIuBUSSIZE, and PRIxBSH for all arches
to follow arm and (generic) mips.

Reviewed by christos.

branches: 1.25.38;
struct device * -> device_t (from chs@)

branches: 1.24.4; 1.24.14;
Fix typo in comment.

- make X68K_BUS_PERFORMANCE_HACK part default
- use volatile rather than dummy __asm() statements to avoid optimization

Tested on X68030.

branches: 1.22.2;
ANSI'fy, misc KNF.

u_intN_t -> uintN_t

bus_space_write_region_N() should also take a const buffer.

Constify the buffer pointer argument of the _bus_space_write_multi_<n>
inline functions, so that this builds again. (Otherwise, ne2000.c driver
would now fail to build.)

branches: 1.18.20; 1.18.22;
Remove clause 3 and 4 from TNF licenses

branches: 1.17.40; 1.17.42; 1.17.44;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

add a pair of new bus_dma(9) functions:
int _bus_dmatag_subregion(bus_dma_tag_t tag,
bus_addr_t min_addr,
bus_addr_t max_addr,
bus_dma_tag_t *newtag,
int flags)
void _bus_dmatag_destroy(bus_dma_tag_t tag)

that allow a (normally broken/limited) device to restrict the bus address
range it can talk to. this is used by bce(4) to limit DMA addresses to
1GB range, the maximum the chip can address.

all this is from Yorick Hardy <yhardy@uj.ac.za> with input from several
people on tech-kern.

XXX: bus_dma(9) needs an update still.

branches: 1.15.20;
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@.

branches: 1.14.2; 1.14.4; 1.14.6;
merge ktrace-lwp.

branches: 1.13.4;
Add a dm_maxsegsz public member to bus_dmamap_t. This allows a user of the API
to select the maximum segment size for each bus_dmamap_load (up to the maxsegsz
supplied to bus_dmamap_create). dm_maxsegsz is reset to the value supplied to
bus_dmamap_create when the dmamap is unloaded.

branches: 1.12.2;
de-__P, remove register, ansify.

branches: 1.11.2; 1.11.10;
Handle 64bit DMA addresses on PCI for platforms that can (currently only
enabled on amd64). Add a dmat64 field to various PCI attach structures,
and pass it down where needed. Implement a simple new function called
pci_dma64_available(pa) to test if 64bit DMA addresses may be used.
This returns 1 iff _PCI_HAVE_DMA64 is defined in <machine/pci_machdep.h>,
and there is more than 4G of memory.

Introduce BUS_DMA_NOCACHE, and bus_dmamem_map() of i386 supports it.

Support BUS_SPACE_MAP_SHIFTED_EVEN for bus_space_map().
Now BUS_SPACE_MAP_SHIFTED means BUS_SPACE_MAP_SHIFTED_ODD.
It is needed for Nereid Ethernet.

branches: 1.8.4; 1.8.6;
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.

branches: 1.7.2;
Add the BUS_DMA_STREAMING flag.

branches: 1.6.2;
Performance hack.
Mainly for the Neptune-X Ethernet adaptor,
and improves ftp(1) speed by ~10%.

get: 219 KB/s -> 246 KB/s
put: 226 KB/s -> 247 KB/s
(X68030, MC68030 25MHz)

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.

branches: 1.4.4;
define a "BUS_SPACE_MAP_PREFETCHABLE" flag which basically means that
device accesses are idempotent (but should not be cached by the CPU)

branches: 1.3.8;
Add a macro to check for sufficient pointer alignment in bus.h context,
"BUS_SPACE_ALIGNED_POINTER()".
Equal to the param.h "ALIGNED_POINTER()" normally, but obeys additional
requirements of the bus_space_xxx_n() macros. (BUS_SPACE_DEBUG)

Merged minoura_x68k_bus_h branch.

branches: 1.1.2;
file bus.h was initially added on branch minoura_x68k_bus_h.

NetBSD/x68k, by Masaru Oki.

Remove unused (hp300 derived) `intiolimit` variable.

Also define proper INTIOSIZE macro and use it where appropriate.
Breifly tested on nono with and without __HAVE_NEW_PMAP_68K.

Largely unify the <machine/cpu.h> headers on the m68k platforms.

Switch the x68k port to use the same clockframe layout as the other
m68k ports.

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).

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.

TAB/space/indent cleanup.

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().

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!)

- Cleanup for dynamic sysctl:
- Remove unused *_NAMES macros for sysctl.
- Remove unused *_MAXID for sysctls.
- Move CTL_MACHDEP sysctl definitions for m68k into m68k/include/cpu.h and
use them on all m68k machines.

branches: 1.59.14; 1.59.16;
Fix typo "one the" and architecture where appropriate.

branches: 1.58.4; 1.58.8;
Remove the variable not used anymore.
sync with x68k/pmap_bootstrap.c,v 1.21 (in 2001).

branches: 1.57.2;
make cpu_need_resched() macros consistent; __USE flags

branches: 1.56.6; 1.56.10;
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.

branches: 1.55.4;
Merge copy-and-pasted fpu_probe() function (to share it among more m68k ports).
Tested on TT030, Sun3/80, and X68030.

branches: 1.54.4;
- 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.

Make intiobase and intiolimit unsigned for consistency.

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@.

branches: 1.51.2; 1.51.4;
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.

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

branches: 1.49.2; 1.49.4;
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>.

Purge x68k_config_found() to simplify consinit routine.
config_console() calls initialization of grf, ite, mfp
directly, instead of tracing special device tree with an
emulated 'struct device'.

Sync with other m68k ports.
- Remove PHYS_IODEV, PHYS_INTIODEV. These are real copy of INTIOBASE.
- Define IIOV() (and IIOP()) and use it, rather than INTIO_ADDR().

Move external decl. of intiobase: dev/intiovar.h -> include/cpu.h
Move definition of intiobase: x68k/pmap_bootstrap.c -> x68k/locore.s
These synchronize code with other m68k ports.

branches: 1.45.4; 1.45.12;
Remove CTL_MACHDEP_NAMES, it's not used anywhere.

Ok by martin@.

branches: 1.44.12; 1.44.16;
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.

branches: 1.43.2;
Add ci_cpuid where it's missing.

branches: 1.42.2; 1.42.4; 1.42.8;
Move declarations of m68k common functions
from <machine/cpu.h> to <m68k/m68k.h>.
While here, remove some obsolete function decls.

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.

Use do { } while (0) to macro.

Adapt to the merge of yamt-idlelwp branch.
tested on my X68030.

branches: 1.38.2; 1.38.4; 1.38.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.37.2;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.

Merge newlock2 to head.

branches: 1.35.20;
merge ktrace-lwp.

branches: 1.34.2;
Change the signature of badaddr() and badbaddr() from taking a caddr_t
to taking a volatile void*. This gets rid of a number of casts to make
this compile under -Wcast-qual.
Add some volatiles and consts in other places to make this build under
-Wcast-qual.
Also rename a few variables to make this build under -Wshadow.
Also get rid of duplicated declarations of badaddr() and badbaddr()
in machdep.c, they're already there from <machine/cpu.h>.

de-__P, remove register, ansify.

branches: 1.32.4;
don't expose cpu_info to userland.

move some per-cpu data definitions to MI place so that they can be modified
without touching all ports. discussed on tech-kern@.

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

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.28.2;
Merge the nathanw_sa branch.

untangle includes a bit:
don't include cpu.h in pmap.h, nor cacheops.h in cpu.h. instead,
include cpu.h and cacheops.h in just those .c files that need them.

branches: 1.26.8;
use _KERNEL_OPT

branches: 1.25.2;
Unification of the m68k syscall() function.

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.

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.

Do not include opt_m680x0 in LKM.

defopt M680[2346]0.

branches: 1.20.2;
Use m68k common cacheops.c.

Define cpu_number() as discussed on tech-smp.

Use mvme68k-derived delay routine.
Now that we support various models, the old constant-loop delay routine
may cause problems.

branches: 1.17.2; 1.17.4; 1.17.6;
Shut up gcc -Wall.

Merged minoura_x68k_bus_h branch.

synchronize types, and s/curproc/p/ in one forgotten place

x68k specific part of fix for PR 6152

branches: 1.13.2;
Splitted out the interrupt handling code to a separate file.
Disallow getting down the interrupt level by splXX.

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.

Oops, back out a buglet I didn't intend to commit in the last change.

configure() prototype is in <sys/device.h>

Eliminated vm_offset_t and vm_size_t.

Avoid declaring the "astpending" and "want_resched" globals in cpu.h,
as this breaks C++ code that happens to indirectly include this header.
Both Matthias Scheler and I noticed this, independently.

This problem notably does not affect the atari and sun3/sun3x ports,
which have already implemented a similar solution.

Make these compile after m68k/m68k.h 1.4->1.5.

Add prototypes.

branches: 1.5.8;
Remove #ifdef GENERIC ... #endif

Add fpu_probe prototype.

Use <m68k/cpu.h>.

Some cleanup.
- Add missing return-type of function.
- Add missing prototype.
- some gcc -Wall printf warning.

branches: 1.1.1;
Initial revision

NetBSD/x68k, by Masaru Oki.

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.

branches: 1.2.166;
Add ELF support.

branches: 1.1.1;
Initial revision

TAB/space/indent cleanup.

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.

If cpu_disklabel includes struct dkbad, define __HAVE_DISKLABEL_DKBAD.
This allows use of subr_disk_mbr on all archs. Default to it for
the rump disk component. No functional change for regular kernels.
(The other option would've been to include dkbad in disklabels
everywhere, but arguably this approach has less possible side-effects,
especially given that wedges and related magic will take over the
world any second now).

branches: 1.4.78;
merge ktrace-lwp.

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.

branches: 1.2.50;
sync with -current after a long silence

branches: 1.1.1;
Initial revision

Basic elf_machdep.h for m68k; doesn't include relocations, yet.

In the `MY THAT'S GROSS' department...
Eliminate the recursive include of machine/endian.h from sys/endian.h.

branches: 1.3.8;
Merged minoura_x68k_bus_h branch.

Format consistency.

branches: 1.1.1;
Initial revision

branches: 1.1.6;
In the `MY THAT'S GROSS' department...
Eliminate the recursive include of machine/endian.h from sys/endian.h.

moved to aout_machdep.h (via repository copy)

Use <m68k/exec.h>.

branches: 1.1.1;
Initial revision

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.

branches: 1.1.2; 1.1.18;
fenv for m68k

Prototype __flt_rounds() consistently.

branches: 1.1.1;
Initial revision

NetBSD/x68k, by Masaru Oki.

Final bit of PR 41200: headers that declare ioctls should include sys/ioccom.h.
This covers most if not all of the MD headers.

XXX: a lot of the ioctl definitions in some of these files are cutpasted.

branches: 1.6.14; 1.6.32;
Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.

branches: 1.5.66; 1.5.72; 1.5.74;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.4.26;
merge ktrace-lwp.

branches: 1.3.16;
Remove COMPAT_HPUX support. It did not work for a long time,
and I do not think emulating frame buffer devices is useful.
KNF.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.48;
Moved grfioctl.h and iteioctl.h to the public include directory.

A foolish consistency.

Pullin m68k/ieee.h.

NetBSD/x68k, by Masaru Oki.

branches: 1.1.2; 1.1.4; 1.1.12;
Add definitions of C99 integer constant macros.

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.

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.

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.

branches: 1.1.2;
Add <machine/int_types.h>, which provides namespace-pure definitions
of exact-width integer types.

TAB/space/indent cleanup.

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

branches: 1.21.60;
Remove obsolete ssir stuff which was used for pre-5.0 softintr(9).

No visible problem on X68030.

branches: 1.20.30; 1.20.40; 1.20.46;
Unify splraiseipl(9) implementation among m68k ports,
discussed with tsutsui@ on port-m68k.

For x68k:
- 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

branches: 1.19.2;
Initialize IPL_SERIAL. Analysed by tsutsui@.
Fixed kern/38684 (and other many panics).

branches: 1.18.2;
Remove clause 3 and 4 from TNF licenses

branches: 1.17.14; 1.17.16; 1.17.18;
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.

branches: 1.16.16; 1.16.18; 1.16.24;
Remove #ifdef _KERNEL since this file is no longer exported.
Suggested by tsutsui@.

- 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.

branches: 1.14.2;
Hide #include <m68k/softintr.h> inside #ifdef _KERNEL in <machine/intr.h>
to avoid exporting unnecessary files to userland.
Should fix build.sh failure, which was pointed out by isaki@.

XXX: which userland program would require contents of <machine/intr.h>?

Add MI softintr(9) support for x68k with common m68k/softintr.c.
Tested by isaki@ and Yasushi Oshima.

XXX: x68k/dev/com.c should be rewritten to use MI com(4).

branches: 1.12.2;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.

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.

branches: 1.10.20; 1.10.22;
implement splraiseipl() for the following ports.
evbppc, evbmips, evbsh3, hp700, mac68k, vax, x68k.

branches: 1.9.8; 1.9.14;
de-__P, remove register, ansify.

branches: 1.8.8; 1.8.24; 1.8.32;
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.

branches: 1.7.2;
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).

Add spllock(). See spl(9) for details.

Minor cleanups & corrections.

branches: 1.4.2;
Protect some declarations by #ifdef _KERNEL.

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.

Merged minoura_x68k_bus_h branch.

branches: 1.1.2;
Splitted out the interrupt handling code to a separate file.
Disallow getting down the interrupt level by splXX.

fix typos, mainly in words minimum and maximum, but also few others.

Final bit of PR 41200: headers that declare ioctls should include sys/ioccom.h.
This covers most if not all of the MD headers.

XXX: a lot of the ioctl definitions in some of these files are cutpasted.

branches: 1.8.14; 1.8.32;
Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.

branches: 1.7.100; 1.7.106; 1.7.108;
merge ktrace-lwp.

Populate kbdmap-related definitions to the userland.
Also g/c unused ioctls.
Pointed out by he.

#ifndef _XXX_H_ #define _XXX_H_ .... #endif

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.3.42;
Shut up gcc -Wall.

Eliminated meaningless ITEKANJI.

Moved grfioctl.h and iteioctl.h to the public include directory.

merge ktrace-lwp.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.2.52;
rcsid fascism

branches: 1.1.1;
Initial revision

TAB/space/indent cleanup.

merge ktrace-lwp.

branches: 1.1.2;
Populate kbdmap-related definitions to the userland.
Also g/c unused ioctls.
Pointed out by he.

Final bit of PR 41200: headers that declare ioctls should include sys/ioccom.h.
This covers most if not all of the MD headers.

XXX: a lot of the ioctl definitions in some of these files are cutpasted.

branches: 1.5.104; 1.5.124;
Add duplicate include protection to <dev/sun/kbio.h>.
Make the x68k port use this include file, so that what remains
is only the port-specific additions.

branches: 1.4.4; 1.4.8;
merge ktrace-lwp.

branches: 1.3.12;
#ifndef _XXX_H_ #define _XXX_H_ .... #endif

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.1;
Initial revision

first commit of M68060 and FPU_EMULATE support.
M68060 support by YAMASAKI Yasushi, few arranged by me.

- Normalize inclusion protection (remove)
- Move CHAR_{MIN,MAX} to a common file.
- Fix broken comments

branches: 1.3.146; 1.3.150;
remove definition of CLOCKS_PER_SEC protected by #ifdef KERNEL. It is
used nowhere, and KERNEL is defined nowhere (vs. _KERNEL).

branches: 1.2.30; 1.2.34; 1.2.42;
multiple include protect machine/limits.h, fixes pr 4473 (from Mika Nystrom)

branches: 1.1.1;
Initial revision

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.

branches: 1.7.2; 1.7.12;
Add xxboot (stage1) support.

branches: 1.6.34; 1.6.38; 1.6.40;
Remove clause 3 and 4 from TNF licenses

branches: 1.5.72; 1.5.74; 1.5.76;
free -> dealloc
unsigned -> size_t for alloc/dealloc

branches: 1.4.2;
merge ktrace-lwp.

branches: 1.3.8;
de-__P, remove register, ansify.

branches: 1.2.2; 1.2.4; 1.2.20; 1.2.28;
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.

branches: 1.1.2; 1.1.4;
libsa for the new bootloader of x68k port.

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>.

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.

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.

Merge the nathanw_sa branch.

branches: 1.1.2;
file mcontext.h was initially added on branch nathanw_sa.

GC this file. It has been unused for quite a while.

branches: 1.1.1;
Initial revision

branches: 1.2.4;
Merge newlock2 to head.

branches: 1.1.2;
file mutex.h was initially added on branch newlock2.

TAB/space/indent cleanup.

merge ktrace-lwp.

An unexported header file was #included from an exported header file.
Introduce <machine/opmreg.h> and move some definitions useful to
userland progs.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.2.52;
rcsid fascism

branches: 1.1.1;
Initial revision

merge ktrace-lwp.

branches: 1.1.2;
An unexported header file was #included from an exported header file.
Introduce <machine/opmreg.h> and move some definitions useful to
userland progs.

x68k: Make _delay() argument to microseconds.
'<< 8' is just a magnification factor and should not be visible
from the outside.

Include "opt_param.h" (ifdef _KERNEL_OPT) everywhere that MSGBUFSIZE is
referenced since some sources include <machine/param.h>.

branches: 1.29.12;
Bump MSGBUFSIZE (2 * NBPG).
Since timestamp was introduced, it was too small to store full dmesg
of one boot.
And putting this behind of #include <m68k/param.h> had no effect.
This was fixed on many arch in 1997 but x68k was not...
http://mail-index.netbsd.org/source-changes/1997/09/20/0021.html

branches: 1.28.48; 1.28.52;
proper sizing of kmem_arena on different ports

PR port-i386/45946: Kernel locks up in VMEM system

branches: 1.27.4; 1.27.8;
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@.

branches: 1.26.4; 1.26.6; 1.26.8;
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.

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.

branches: 1.24.10;
Remove COMPAT_HPUX.

branches: 1.23.18; 1.23.24; 1.23.30;
Merge #ifdef _KERNEL stuff into one place.
Suggested by tsutsui@.

Include <machine/intr.h> only in _KERNEL.
Suggested by tsutsui@.

branches: 1.21.26; 1.21.30;
merge ktrace-lwp.

branches: 1.20.8;
de-__P, remove register, ansify.

branches: 1.19.8;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.18.2;
Merge the nathanw_sa branch.

merge pmap.h for all 4k-page motorola-MMU (or compatible) m68k platforms.

branches: 1.16.8;
use _KERNEL_OPT

branches: 1.15.2;
Sync. w/ luna68k; eliminate irrelavant code imposed by
the restriction of hp300 hardware and HP-UX compatibility.

Update for the NKMEMPAGES changes.

CL* discarding.

branches: 1.12.2; 1.12.8;
Use mvme68k-derived delay routine.
Now that we support various models, the old constant-loop delay routine
may cause problems.

branches: 1.11.4; 1.11.6; 1.11.8;
Splitted out the interrupt handling code to a separate file.
Disallow getting down the interrupt level by splXX.

sync with -current after a long silence

defopt COMPAT_HPUX

Prototype spl0().

Implement the kernel part of pr-1891. This allows for a more flexible sized
msgbuf. Note that old 'dmesg' and 'syslogd' binaries will continue running,
though old 'dmesg' binaries will output a few bytes of junk at the start of
the buffer, and will miss a few bytes at the end of the buffer.

branches: 1.6.2;
Restore the define of NPTEPG.

The 'Mach derived conversion macros' are now in <m68k/param.h>

Use the MI <m68k/param.h> include.

Define ALIGNED_POINTER

branches: 1.2.8;
spl0 prototype.

branches: 1.1.1;
Initial revision

merge ktrace-lwp.

#ifndef _XXX_H_ #define _XXX_H_ .... #endif

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.48;
Moved parioctl.h to the system header directory.

Need a common <m68k/pcb.h> for gdb.

branches: 1.1.1;
Initial revision

Remove x68k/include/pci_machdep.h.
x68k does not have PCI-bus, and no one refers to it.

branches: 1.1.1;
Initial revision

Since we're batting 1.000 on "platforms that adopt new-pmap_68k that also
use machine_bootmap[]", just remove the option (it looks like it would
be opted into on every platform).

No need to explicitly include mmu_{30,40}.h here; x68k does not use the
TT register for anything.

Make x68k port the new m68k pmap ready:

- Add new pmap files to config(5) file definitions
- Add commented out options __HAVE_NEW_PMAP_68K in conf/std.x68k
- Adjust <machine/pmap.h> and <machine/pte.h> for new pmap
initialization ops etc.
- Update <machine/vmparam.h> for the new pmap specific address layout
- Tweak initializations in locore.s and pmap_bootstrap.c:
- Save "boothowto" and "bootdev" registers earlier so that
%d7 and %d6 can be used safely as other m68k ports
- Rename pmap_bootstrap() -> pmap_bootstrap1()
- Move initialization of "avail_start" and "avail_end" to x68k_init()
- Allocate intio space using the pmap_bootmap structure and variables
that represent I/O space region ("intiobase" and "intiolimit") in
x68k_init() in __HAVE_NEW_PMAP_68K case

The new pmap kernel reaches single-user on (real) X68030.
On nono emulating X68030 init(8) gets Bus error as other ports.

merge pmap.h for all 4k-page motorola-MMU (or compatible) m68k platforms.

untangle includes a bit:
don't include cpu.h in pmap.h, nor cacheops.h in cpu.h. instead,
include cpu.h and cacheops.h in just those .c files that need them.

it really helps to get the stub right before cutting + pasting it 27 times.
alas, I did not. doh.

add pmap_remove_all() hook (empty on most platforms so far).

branches: 1.23.4;
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.

branches: 1.22.2; 1.22.4;
replace vm_page_t with struct vm_page *.

replace {simple_,}lock{_data,}_t with struct {simple,}lock {,*}.

Undo a misguided previous change to the pmap_update() API.

Give pmap_update() an argument (a pmap_t) so that it knows which
pmap it should be updating.

#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).

branches: 1.17.2;
Make PMAP_PAGEIDLEZERO() return a boolean value. FALSE indidcates
that the page being zero'd was not completed and that page zeroing
should be aborted. This may be used by machine-dependent code doing
slow page access to reduce the latency of running a process that has
become runnable while in the middle of doing a slow page zero.

Add #ifdef _KERNEL ~ #endif to protect kernel variables from userland.

branches: 1.15.4;
MD parts of uvm_pageidlezero.

branches: 1.14.2;
Missing #if for 060.

branches: 1.13.2; 1.13.4; 1.13.6;
Merged minoura_x68k_bus_h branch.

x68k specific part of fix for PR 6152

MACHINE_NEW_NONCONTIG is no longer optional
remove non-MNN code

branches: 1.10.6;
Eliminated vm_offset_t and vm_size_t.

sync with -current after a long silence

Move pmap_map() function definition to MD headers, as appropriate. It's
an internal function, and the VM system shouldn't try to prototype it.
(Note that some ports _don't_ prototype it.)

Garbage-collect pm_stchanged; it's not used by anything.

Garbage-collect use of the PCB's copy of the user segment table pointer.

Now that all ports have pmap_activate(), and it has an identical interface,
prototype it in <vm/pmap.h>

Change an argument name to PMAP_ACTIVATE() to more accurately describe the
semantics of the argument.

- Make pmap_activate() and pmap_deactivate() take a struct proc *.
- Define active_user_pmap() and use it in the appropriate places (from hp300
port).

s/x68k_btop/m68k_btop/

branches: 1.1.1;
Initial revision

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.

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.

Obsolete pow(4) and rtcalarm(8). Discussed in port-x68k@.
Probably the combination of pow(4) ioctl and rtcalarm(8) does
not work for a long time, and nobody uses them.
I'll rewrite a part about power switch handler as a new device.

branches: 1.4.14;
x68k pow(4) now uses MI sysmon_pswitch framework. suggested by tsutsui@.
- Make MD poffd(8) retire, and use MI powerd(8) instead of it.
- Make /dev/pow1 retire, because nobody holds /dev/pow0 any longer.
Use /dev/pow0 for pow(4) ioctl.
- POWIOCSSIGNAL ioctl which is for poffd(8) is also obsoleted.

branches: 1.3.74; 1.3.78; 1.3.86;
merge ktrace-lwp.

#ifndef _XXX_H_ #define _XXX_H_ .... #endif

branches: 1.1.1;
Initial revision

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.)

branches: 1.3.30; 1.3.34; 1.3.42;
sync with -current after a long silence

Add MDP_STACKADJ.

branches: 1.1.1;
Initial revision

NetBSD/x68k, by Masaru Oki.

NetBSD/x68k, by Masaru Oki.

Make x68k port the new m68k pmap ready:

- Add new pmap files to config(5) file definitions
- Add commented out options __HAVE_NEW_PMAP_68K in conf/std.x68k
- Adjust <machine/pmap.h> and <machine/pte.h> for new pmap
initialization ops etc.
- Update <machine/vmparam.h> for the new pmap specific address layout
- Tweak initializations in locore.s and pmap_bootstrap.c:
- Save "boothowto" and "bootdev" registers earlier so that
%d7 and %d6 can be used safely as other m68k ports
- Rename pmap_bootstrap() -> pmap_bootstrap1()
- Move initialization of "avail_start" and "avail_end" to x68k_init()
- Allocate intio space using the pmap_bootmap structure and variables
that represent I/O space region ("intiobase" and "intiolimit") in
x68k_init() in __HAVE_NEW_PMAP_68K case

The new pmap kernel reaches single-user on (real) X68030.
On nono emulating X68030 init(8) gets Bus error as other ports.

merge pte.h for m68k w/ motorola or compatible MMU
(only 4k-page platforms so far).

branches: 1.2.8;
Use m68k_page_offset and m68k_trunc_page macros,
instead of using PGOFSET directly.

branches: 1.1.1;
Initial revision

NetBSD/x68k, by Masaru Oki.

NetBSD/x68k, by Masaru Oki.

merge ktrace-lwp.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.1;
Initial revision

branches: 1.2.4;
Merge newlock2 to head.

branches: 1.1.2;
file rwlock.h was initially added on branch newlock2.

NetBSD/x68k, by Masaru Oki.

Minor change.

branches: 1.1.1;
Initial revision

Final bit of PR 41200: headers that declare ioctls should include sys/ioccom.h.
This covers most if not all of the MD headers.

XXX: a lot of the ioctl definitions in some of these files are cutpasted.

branches: 1.3.122; 1.3.142;
merge ktrace-lwp.

#ifndef _XXX_H_ #define _XXX_H_ .... #endif

branches: 1.1.1;
Initial revision

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.

Merged minoura_x68k_bus_h branch.

Standardize format.

branches: 1.1.1;
Initial revision

branches: 1.2.18;
merge ktrace-lwp.

branches: 1.1.6;
Add m68k sunos_machdep.h

Remove compat_svr4 and compat_svr4_32, as discussed on tech-kern@ recently,
but also as discussed several times in the past.

branches: 1.3.40; 1.3.218;
Rip protection against multiple inclusion from wrapper headers.

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.10;
Pull in the right generic m68k header. (Where was my mind?)

Add COMPAT_SVR4 for m68k.

NetBSD/x68k, by Masaru Oki.

Define __HAVE_LEGACY_INTRCNT to indicate this port uses legacy intrcnt
interrupt accounting.

branches: 1.15.110; 1.15.112;
Now that __HAVE_TIMECOUNTER and __HAVE_GENERIC_TODR are invariants,
remove the conditionals and the code associated with the undef case.

branches: 1.14.2; 1.14.8;
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.

branches: 1.13.10;
Generic soft interrupts are mandatory.

branches: 1.12.2; 1.12.10;
Add MI softintr(9) support for x68k with common m68k/softintr.c.
Tested by isaki@ and Yasushi Oshima.

XXX: x68k/dev/com.c should be rewritten to use MI com(4).

branches: 1.11.4;
Convert x68k to timecounters. This conversion is not tested, due to lack
of available test candidates. It uses the previously unused (as far as I
can tell) Timer D, in freerunning mode. It only uses a 1/200 prescaler
(20KHz), as anything faster would roll over too fast for the system timer.
(Gotta love 8-bit resolution timers!) Approved for untested commit by core@.

branches: 1.10.2;
Converted x68k to todr. Compile tested only, but it has a low probably
of breaking anything.

branches: 1.9.8; 1.9.20;
merge ktrace-lwp.

branches: 1.8.8;
x68k no longer abuses cf_unit.

branches: 1.7.16; 1.7.24;
Use "#define<tab>".

branches: 1.6.8; 1.6.12;
add __BROKEN_CONFIG_UNIT_USAGE #define, becuase these ports do very
wrong things with device configuration data "cf_unit" information.

#define __HAVE_DEVICE_REGISTER on ports that have it, and check for
that, rather than a list of architecture defines, in config_attach

branches: 1.4.14;
__BROKEN_INDIRECT_CONFIG fixes.

Remove __BDEVSW_DUMP_OLD_TYPE.

branches: 1.2.10;
First step inn removing config_scan() and the hacks that gave devices
on indirect-config busses a (permanent) softc that they could share
between 'match' and 'attach' routines:

Define __BROKEN_INDIRECT_CONFIG so that old autoconfiguration
interfaces are used, until drivers are converted to use the new
interfaces (actually, converted back to use the _older_ interfaces)
which prohibit indirect configuration devices from receiving a softc
in their match routine that they can share with their attach routine.

branches: 1.1.1;
Initial revision

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.

branches: 1.1.1;
Initial revision

Make x68k port the new m68k pmap ready:

- Add new pmap files to config(5) file definitions
- Add commented out options __HAVE_NEW_PMAP_68K in conf/std.x68k
- Adjust <machine/pmap.h> and <machine/pte.h> for new pmap
initialization ops etc.
- Update <machine/vmparam.h> for the new pmap specific address layout
- Tweak initializations in locore.s and pmap_bootstrap.c:
- Save "boothowto" and "bootdev" registers earlier so that
%d7 and %d6 can be used safely as other m68k ports
- Rename pmap_bootstrap() -> pmap_bootstrap1()
- Move initialization of "avail_start" and "avail_end" to x68k_init()
- Allocate intio space using the pmap_bootmap structure and variables
that represent I/O space region ("intiobase" and "intiolimit") in
x68k_init() in __HAVE_NEW_PMAP_68K case

The new pmap kernel reaches single-user on (real) X68030.
On nono emulating X68030 init(8) gets Bus error as other ports.

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

branches: 1.40.30;
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.

branches: 1.39.2; 1.39.4;
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?

branches: 1.38.14;
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

PR port-mac68k/51923
Remove unused SYSPTSIZE and USRPTSIZE from m68k ports.
Ok jklos

branches: 1.36.6; 1.36.10; 1.36.14;
Increase VM_KERNEL_PT_PAGES from 2 to 4 for x68k.

X68030 with 8MB or 12MB RAM (which is default for most X68030s)
now gets "pmap_enter_ptpage: can't get KPT page" panic again
with VM_KERNEL_PT_PAGES=2 while it works with >=14MB.
3 is enough to boot for now, but I also add a spare.

I guess this is because the post netbsd-6 vmem(9) bootstrap
changes require more kernel memory before MD pmap_init().

Note1: netbsd-6 (which also pulls physmem detection changes
that affect nptpages) doesn't have this problem.
Note2: other hp300 pmap based m68k ports might have the same issue,
but at least 12MB luna68k works with VM_KERNEL_PT_PAGES=2
so I think it depends on kernel size and/or iomapsize.

branches: 1.35.6; 1.35.10;
Give higher priority to faster local memory on uvm_page_physload().
Tested by Y.Sugahara on his 060turbo with 128MB local memory and
this improved even simple benchmark. Ok'ed by isaki@.

branches: 1.34.2; 1.34.6;
Move VM_MAXUSER_ADDRESS and VM_MAX_ADDRESS from 0xFFFFD000 to 0xFFF00000
which is used by other hp300 derived ports.
The previous values might be derived from (0 - UPAGES * PAGE_SIZE), but
there is no particular reason to have different values among m68k ports.

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@.

branches: 1.32.2; 1.32.4;
Remove incomplete, never worked dynamic run-time memory registration
(uvm_page_physload(9)). This functionality will be re-added later.

branches: 1.31.2; 1.31.4;
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.

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.

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.

branches: 1.28.78; 1.28.86; 1.28.92;
merge ktrace-lwp.

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.

branches: 1.26.8; 1.26.10;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.25.2;
Use PAGE_SIZE rather than NBPG.

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.

MAXSLP is defined to be a machine-independent scheduling parameter,
so move it into sys/param.h.

branches: 1.22.2;
fix typo s/X86K/X68K/ in comment.

branches: 1.21.2; 1.21.6;
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.

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.

branches: 1.19.2;
Sync. w/ luna68k; eliminate irrelavant code imposed by
the restriction of hp300 hardware and HP-UX compatibility.

Eliminate EIOMAPSIZE.

G/C.

Remove unused pcbb() macro.

We use 4K pages on the x86k. Make PAGE_SIZE and friends into
compile-time constants.

Update for the NKMEMPAGES changes.

Remove obsoleted macros.

Change physseg allocation strategy to VM_PSTRAT_BIGFIRST.
Required when big (>64MB) high memory is installed.

CL* discarding.

branches: 1.10.2; 1.10.8;
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.

branches: 1.9.2; 1.9.4;
Merged minoura_x68k_bus_h branch.

MACHINE_NEW_NONCONTIG is no longer optional
remove non-MNN code

branches: 1.7.6;
Unimplemented EIOMAPSIZE defaults to 0.

Eliminated vm_offset_t and vm_size_t.

Define one page free list, and put all pages on it.

sync with -current after a long silence

branches: 1.3.6;
update comment from 1981 on memory and disk prices -- pr-2754 from Curt Sampson

bring mrg-vm-swap2 onto mainilne.

branches: 1.1.1;
Initial revision

Collapse two more separate instances of MD vuid_event.h header
files to instead use the common <dev/sun/vuid_event.h> header.

branches: 1.4.4; 1.4.8;
merge ktrace-lwp.

branches: 1.3.12;
#ifndef _XXX_H_ #define _XXX_H_ .... #endif

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.1.1;
Initial revision

merge ktrace-lwp.

branches: 1.1.2;
Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.

Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.

branches: 1.8.14;
Merge tty changes from the vmlocking branch.

branches: 1.7.2; 1.7.18; 1.7.20; 1.7.24; 1.7.26;
Add MI softintr(9) support for x68k with common m68k/softintr.c.
Tested by isaki@ and Yasushi Oshima.

XXX: x68k/dev/com.c should be rewritten to use MI com(4).

branches: 1.6.26;
merge ktrace-lwp.

branches: 1.5.8;
de-__P, remove register, ansify.

branches: 1.4.8;
Fix my bogus copyright notice. Pointed out by wiz.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.2.42;
Merged minoura_x68k_bus_h branch.

branches: 1.1.6;
Switched to MI zs driver.