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: 1.27.36;
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: 1.26.16; 1.26.18;
fenv for m68k

branches: 1.25.12; 1.25.30;
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.

Merge newlock2 to head.

branches: 1.23.4;
don't install <machine/db_machdep.h>, this is kernel only

branches: 1.22.4; 1.22.8;
merge ktrace-lwp.

branches: 1.21.12;
Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.

branches: 1.20.2;
Merge the nathanw_sa branch.

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

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: 1.17.8;
No point in installing svr4_machdep.h.

branches: 1.16.2; 1.16.8;
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: 1.12.2;
Backout the last change; I'll deal with it another way.

Add loadfile_machdep.h to list of installed machine headers.

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>.

Bah, forgot to add intr.h during my last round of roto-tilling.

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: 1.5.2;
Add COMPAT_SVR4 for m68k.

branches: 1.4.4;
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.

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

mvme68k port -- for the motorola vme147 m68030 card

udpate license clauses on my code to match the new-style BSD licenses.
remove no-longer-valid wustl email address for me.
based on diff that rmind@ sent me.

no functional change with this commit.

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

Centralize the declaration of booted_device and booted_partition.

g/c PARTITIONMASK, it's not used anywhere anymore

branches: 1.4.28;
Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.3.28; 1.3.36;
bootdv -> booted_device

branches: 1.2.2;
Do the extern song and dance.

branches: 1.1.2;
add to fix boot generic problem

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.

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.

Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.2.8; 1.2.16;
Merge support for mvme167 into main tree.

branches: 1.1.2;
file bus.h was initially added on branch scw-mvme167.

s/from from/from/ in comment.

Remove clause 3 and 4 from TNF licenses

branches: 1.15.6; 1.15.8; 1.15.10;
Misc cleanup:
- KNF, ANSIfy, remove __P()
- use __func__ to print function names
- use __arraycount()
- include "ioconf.h" for struct cfdriver
- u_intNN_t -> uintNN_t
- wrap long lines
etc.

branches: 1.14.20; 1.14.26; 1.14.32;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.13.26;
merge ktrace-lwp.

branches: 1.12.4;
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: 1.11.2; 1.11.10; 1.11.12;
Introduce BUS_DMA_NOCACHE, and bus_dmamem_map() of i386 supports it.

Separate out devices common to many Motorola mvme boards (68k, 88k and ppc)
in preparation for future mvmeppc and mvme88k ports.

This needs a bit if tidying up to make it trully shareable, which will
happen as the new mvme ports are added.

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.

branches: 1.8.2;
Finally nobble the bus_dmamap_sync() problem with osiop(4).

Basically, bus_dmamap_sync() `PREREAD' needs to flush the cache
for the start and end of the region if it is not aligned to
a cacheline boundary, otherwise a subsequent POSTREAD can *purge*
valid data which was in the cacheline but *outside* the region
passed to bus_dmamap_sync().

Bus snooping doesn't always help here because osiop(4) calls
bus_dmamap_sync() with POSTREAD even if no data was actually
transferred! (And we can't rely on snooping on the 68060 models anyway).

Add the BUS_DMA_STREAMING flag.

branches: 1.6.2;
Revamp the bus_space(9) implementation:
. use a structure for the tag instead of an integer constant,
. add bus_space_{peek,poke}_N() (and G/C `badaddr()'),
. fix a few drivers which have dependencies on the implementation.

branches: 1.5.2;
Checkpoint of code to add VMEbus slave support using vme_dmamap* and
vme_dmamem*.

This is still a work in progress, but seems to DTRT on mvme167 so far.

TODO:
. Get VMEbus slave mode going on mvme147. This should be easy.
. Fix up the A16 slave mappings.
. Bounce buffer support. (Messy, but pretty much a `must have'.)
. Figure out how to deal with `location monitor' interrupts
within the framework. (Useful for Busnet, among other things.)
. It would be nice to make use of the VMEchip2's DMA facilities...

Pull a bunch of common code from vme_pcc.c and vme_two.c into
the new mvmebus.[ch] files, and put down some initial code to
deal with VMEbus slave mode.

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: 1.2.4;
Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.1.2;
file bus_dma.h was initially added on branch scw_mvme68k_bus_space.

mvme68k: Specify proper constraints for bus_space_read region and multi ops.

Sync with next68k.

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.

branches: 1.16.4;
s/impliment/implement/ in comment.

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

Reviewed by christos.

branches: 1.14.48;
Change old-style function defintions to C89 prototypes.

Approved by releng.

branches: 1.13.34; 1.13.38;
Remove clause 3 and 4 from TNF licenses

branches: 1.12.6; 1.12.8; 1.12.10;
Misc cleanup:
- KNF, ANSIfy, remove __P()
- use __func__ to print function names
- use __arraycount()
- include "ioconf.h" for struct cfdriver
- u_intNN_t -> uintNN_t
- wrap long lines
etc.

branches: 1.11.44; 1.11.50; 1.11.58;
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: 1.10.2; 1.10.4; 1.10.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.8.16;
Simplify bus_space_{read,write}_N. Gcc3 emits better code than the old
compiler with straight C, rather than inline asm. (The latter was slightly
broken anyway with gcc3's more aggressive optimisation).

branches: 1.7.24;
Add register prefixes.

Replace the inline C versions of bus_space_{read,write}_N() with
inline assembler. This generates significantly more efficient code,
and trims ~1KB off the size of an mvme68k GENERIC kernel...

Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.4.2;
define a "BUS_SPACE_MAP_PREFETCHABLE" flag which basically means that
device accesses are idempotent (but should not be cached by the CPU)

branches: 1.3.2;
add BUS_SPACE_ALIGNED_POINTER() definitions for completeness

branches: 1.2.4;
Merge support for mvme167 into main tree.

branches: 1.1.2;
file bus_space.h was initially added on branch scw-mvme167.

mvme68k port -- for the motorola vme147 m68030 card

Preperatory steps for using the new unitified pmap_bootstrap1():
- Eliminate intiotop_phys, intiolimit. A variable to hold the size
(new intiosize) is enough.
- Rename pmap_bootstrap() -> pmap_bootstrap1()

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

Consistently use "intr_depth" as the name of the interrupt depth counter
on m68k platforms.

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).

Don't put the MVME1xx model defines into IDENT, make them defflag options and
put them in opt_mvmeconf.h. Make these options depend on the appropriate
M680x0 option (MVME147 -> M68030, MVME16[27] -> M68040, MVME17[27] -> M68060)
so that the CPU option appears correctly in opt_m68k_arch.h.

Switch mvme68k over to the common interrupt dispatch code and G/C
__HAVE_LEGACY_INTRCNT.

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.

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().

- 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: 1.49.14; 1.49.16;
Fix typo "one the" and architecture where appropriate.

branches: 1.48.6; 1.48.10;
make cpu_need_resched() macros consistent; __USE flags

branches: 1.47.6; 1.47.10;
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: 1.46.4; 1.46.8;
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: 1.45.2; 1.45.4;
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: 1.43.2; 1.43.4;
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>.

branches: 1.42.4;
Remove CTL_MACHDEP_NAMES, it's not used anywhere.

Ok by martin@.

branches: 1.41.2; 1.41.6;
Misc cleanup:
- KNF, ANSIfy, remove __P()
- use __func__ to print function names
- use __arraycount()
- include "ioconf.h" for struct cfdriver
- u_intNN_t -> uintNN_t
- wrap long lines
etc.

branches: 1.40.2; 1.40.8;
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: 1.39.2;
Add ci_cpuid where it's missing.

branches: 1.38.2; 1.38.4; 1.38.8;
Move declarations of m68k common functions
from <machine/cpu.h> to <m68k/m68k.h>.
While here, remove some obsolete function decls.

Adapt rest of m68k ports to yamt-idlelwp. Compile tested only.

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.

branches: 1.35.2; 1.35.4; 1.35.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.34.2;
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: 1.32.20;
merge ktrace-lwp.

branches: 1.31.12;
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: 1.27.2;
Merge the nathanw_sa branch.

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.

Separate out devices common to many Motorola mvme boards (68k, 88k and ppc)
in preparation for future mvmeppc and mvme88k ports.

This needs a bit if tidying up to make it trully shareable, which will
happen as the new mvme ports are added.

branches: 1.24.2; 1.24.8;
Ditch the `simulated' software interrupt in favour of
hardware-assisted soft interrupts on all boards.
(Note: VMEChip2-less 162/172 not yet tested)

This greatly simplifies the `rei' path and allows
interrupt nesting to be tracked somewhat more easily.

As a result we now have a working CLKF_INTR() macro
and can detect uvm_fault() being called from an interrupt
(although there may still be a very short race detecting
the latter; need to investigate further).

Don't need to prototype child_return() here, it's in <sys/proc.h>.

use _KERNEL_OPT

branches: 1.21.2;
Revamp the bus_space(9) implementation:
. use a structure for the tag instead of an integer constant,
. add bus_space_{peek,poke}_N() (and G/C `badaddr()'),
. fix a few drivers which have dependencies on the implementation.

Add support for the m68060-based machines: MVME-172 and MVME-177.
CPU support taken from a combination of NetBSD/amiga and NetBSD/x68k.

At this time, MVME-172 works but MVME-177 is untested. Since the '177
is otherwise identical to the MVME-167, this should *just work*.

Use the complete ethernet address stored in nvram on mvme162/mvme167
instead of faking the first 5 nibbles a'la mvme147.

Apparently recent mvme16x boards have a new 5 nibble prefix...

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.

G/C the IIO* #defines. They're no longer needed.

branches: 1.16.4;
Protect against multiple inclusion.

s/schedcpu_percpu/schedstate_percpu/

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.

Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.12.2; 1.12.10;
Define cpu_number() as discussed on tech-smp.

MVME68K specific part of fix for PR 6152

Add support for the VMEchip2 and the ncr53c710 SCSI IOP.
VMEchip2 support work is ongoing. SCSI is complete.

Merge support for mvme167 into main tree.

branches: 1.8.4;
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.

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.

- Use MVME "machine options" to associate MVME models with CPU
options (a'la the hp300 port).
- Declare a "machineid" extern.
- Define constants for machineid, which match the Bug's idea
of MVME model numbers.

Prototype badaddr().

Use <m68k/cpu.h>.

cpu.h: add prototypes (from jason)
disklabel.h: new disklabel format (from Dale Rahn)
param.h: new delay stuff (from sun3 port)
vmparam.h: nuke eiomap for new autoconfig (from jason)
z8530var.h: for MI driver (from jason)

Remove deprecated cpu_setstack().

branches: 1.1.1;
Initial revision

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: 1.3.14;
obsolete DB_AOUT_SYMBOLS. however, we need to leave most of the code
in db_sym.[ch] as it is used by the elf version of crash(8).

i will be cleaning up the db_sym.c code in a follow up commit to avoid
having dead code compiled.

branches: 1.2.152; 1.2.158;
Set things up so that DDB can get to the symbol table in ELF kernels.

branches: 1.1.1;
Initial revision

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.

Follow revision 1.8 in OpenBSD: remove ad clause.

branches: 1.9.78;
merge ktrace-lwp.

g/c PARTITIONSHIFT (not used anywhere) and set MAXPARTITIONS directly to 8

branches: 1.7.6; 1.7.22;
Use comments around the token after a #endif.

branches: 1.6.4;
Add __attribute__((__packed__)) to cpu_disklabel to get around
the ELF padding/alignment constraints.

Drop some #defines which are now in sys/disklabel.h.

branches: 1.4.32; 1.4.34; 1.4.38;
add some comments to explain what is going on here
also add enough info to enable the kernel to create
a valid disklabel without help from wrtvid.

change maxpart to 8 to be compat with prev binaries

cpu.h: add prototypes (from jason)
disklabel.h: new disklabel format (from Dale Rahn)
param.h: new delay stuff (from sun3 port)
vmparam.h: nuke eiomap for new autoconfig (from jason)
z8530var.h: for MI driver (from jason)

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: 1.2.10;
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

mvme68k port -- for the motorola vme147 m68030 card

A foolish consistency.

Pullin m68k/ieee.h.

pull in ieeefp.h from m68k common area

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.

Add _KERNEL guards around most of the definitions in these files.

Switch mvme68k over to the common interrupt dispatch code and G/C
__HAVE_LEGACY_INTRCNT.

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

branches: 1.21.32;
s/static inline/static __inline/g for consistency.

branches: 1.20.62;
Remove a no-longer-needed include of <sys/device.h>, which now created
a build problem because dvl_mtx has an incomplete type when building
cacheops.o.

Unify splraiseipl(9) implementation among m68k ports,
discussed with tsutsui@ on port-m68k.

For mvme68k:
- 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
- replace the order of IPL_SOFTCLOCK and IPL_SOFTBIO according to spl(9)

branches: 1.18.2; 1.18.4;
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;
- 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: 1.15.2; 1.15.6;
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: 1.13.14; 1.13.16;
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: 1.12.2; 1.12.4; 1.12.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

branches: 1.11.8; 1.11.40;
Ditch the `simulated' software interrupt in favour of
hardware-assisted soft interrupts on all boards.
(Note: VMEChip2-less 162/172 not yet tested)

This greatly simplifies the `rei' path and allows
interrupt nesting to be tracked somewhat more easily.

As a result we now have a working CLKF_INTR() macro
and can detect uvm_fault() being called from an interrupt
(although there may still be a very short race detecting
the latter; need to investigate further).

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: 1.9.2;
Make softclock a generic soft interrupt of the API is available,
adding the requisite void * argument to softclock().

Rename __GENERIC_SOFT_INTERRUPTS to __HAVE_GENERIC_SOFT_INTERRUPTS,
and place the definition in <machine/types.h>. This can now be used
as a flag to indicate whether or not <machine/intr.h> can be included
to get the generic soft interrupt API.

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).

A small splx()/spl0()/soft interrupt related optimisation. If we're
dropping to spl0, use inline code to check if a soft interrupt is
pending instead of taking the hit of a function call to do the check.

branches: 1.5.2;
Add IPL_SERIAL.

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

Implement generic soft interrupts for mvme68k.
Based on Jason Thorpe's Alpha implementation.

branches: 1.2.4;
Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.1.2;
file intr.h was initially added on branch scw_mvme68k_bus_space.

Machine-dependent crash dump header - just pulls in <m68k/kcore.h>

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

branches: 1.2.192; 1.2.196;
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: 1.6.2;
fixes for gcc-4.8 (John D. Baker)

branches: 1.5.34; 1.5.44; 1.5.50;
Remove clause 3 and 4 from TNF licenses

branches: 1.4.72; 1.4.74; 1.4.76;
free -> dealloc
unsigned -> size_t for alloc/dealloc

branches: 1.3.2; 1.3.34; 1.3.46;
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.

branches: 1.2.2; 1.2.6; 1.2.8;
The LOAD_TEXTA flag is required when loading a.out kernels.

Also add some non-standalone versions for the benefit of installboot(8).

Prepare to switch mvme68k bootloader over to the MI loadfile().

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: 1.1.8;
C99: Define a NAN macro in <math.h> which evaulates to a constant expression of
a single-precision quiet NaN; only to be defined on platforms that do support
this value.

Merge the nathanw_sa branch.

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

branches: 1.2.4;
Merge newlock2 to head.

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

proper sizing of kmem_arena on different ports

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

branches: 1.32.4; 1.32.8;
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: 1.31.4; 1.31.6; 1.31.8;
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: 1.29.10;
Misc cleanup:
- KNF, ANSIfy, remove __P()
- use __func__ to print function names
- use __arraycount()
- include "ioconf.h" for struct cfdriver
- u_intNN_t -> uintNN_t
- wrap long lines
etc.

branches: 1.28.50; 1.28.56; 1.28.64;
merge ktrace-lwp.

Patterned after next68k, omit inclusion of <sys/device.h> if we
are not in _KERNEL. This should work around our lint problems
related to "unspecified-size array at end of struct" constructs.

branches: 1.26.14; 1.26.16; 1.26.20;
Move UCB-licensed code from 4-clause to 3-clause licence.

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

branches: 1.25.6;
merge pmap.h for all 4k-page motorola-MMU (or compatible) m68k platforms.

branches: 1.24.8;
Some minor optimisations to avoid checking {cpu,mmu}type when
the kernel was built for only one type of CPU.

UPAGES -> 2 as recommended by Chuck Silvers.

Add support for the m68060-based machines: MVME-172 and MVME-177.
CPU support taken from a combination of NetBSD/amiga and NetBSD/x68k.

At this time, MVME-172 works but MVME-177 is untested. Since the '177
is otherwise identical to the MVME-167, this should *just work*.

Nuke HP_SEG_SIZE. Use NBSEG instead (as used by m68k_trunc_seg() et al),
which takes into account the mmu type.

branches: 1.20.2;
Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.19.2;
Update for the NKMEMPAGES changes.

CL* discarding.

branches: 1.17.2; 1.17.8;
Add #ifdef _KERNEL around the spln() macros.

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.

Double the value for NKMEMCLUSTERS, to allow more KVA for LFS et al.

branches: 1.14.4;
Add splserial().

vm_offset -> [vp]addr_t and vm_size_t -> [vp]size_t
While I'm here, expunge use of 'register' storage class.

Move the definition of MSGBUFSIZE up to the machine-arch level if
possible. Pointed out by Bernd Ernesti.

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: 1.10.2;
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: 1.6.8;
cpu.h: add prototypes (from jason)
disklabel.h: new disklabel format (from Dale Rahn)
param.h: new delay stuff (from sun3 port)
vmparam.h: nuke eiomap for new autoconfig (from jason)
z8530var.h: for MI driver (from jason)

add _MACHINE and _MACHINE_ARCH, which are like MACHINE and MACHINE_ARCH,
execpt without quotes. meant to be __CONCAT()ted for easy #includes
of machine-dependent headers for MI code (e.g. for the MI ISA/EISA/PCI/TC
bus code).

Clean up tabbing/spacing in defns of MACHINE, MACHINE_ARCH, and MID_MACHINE.

LOCORE -> _LOCORE

Replace splnet() with splsoftnet(). Add splnet().

branches: 1.1.1;
Initial revision

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

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).

__HAVE_NEW_PMAP_68K glue.

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

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: 1.24.4;
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: 1.23.2; 1.23.4;
replace vm_page_t with struct vm_page *.

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

Finally nobble the bus_dmamap_sync() problem with osiop(4).

Basically, bus_dmamap_sync() `PREREAD' needs to flush the cache
for the start and end of the region if it is not aligned to
a cacheline boundary, otherwise a subsequent POSTREAD can *purge*
valid data which was in the cacheline but *outside* the region
passed to bus_dmamap_sync().

Bus snooping doesn't always help here because osiop(4) calls
bus_dmamap_sync() with POSTREAD even if no data was actually
transferred! (And we can't rely on snooping on the 68060 models anyway).

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;
Add pmap_zero_page_uncached(), and the PMAP_PAGEIDLEZERO macro.

Nuke HP_SEG_SIZE. Use NBSEG instead (as used by m68k_trunc_seg() et al),
which takes into account the mmu type.

branches: 1.15.2;
Merge 'scw_mvme68k_bus_space' branch with the trunk.
These changes add support for:

o The MI VMEbus framework on both MVME147 and MVME167.
o Enhancements to the existing MD bus_space(9) implementation.
o Most of the bus_dma(9) API.

branches: 1.14.8; 1.14.16;
MVME68K specific part of fix for PR 6152

MNN is no longer optional

vm_offset -> [vp]addr_t and vm_size_t -> [vp]size_t
While I'm here, expunge use of 'register' storage class.

Whoops, cgd's pmap_map change got lost! Put it back.

Implement changes for MACHINE_NEW_NONCONTIG and UVM.

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).

Added support for VMEbus RAM cards via MACHINE_NONCONTIG.
The kernel should still compile and run without it, but I've
put the config option in std.mvme68k so it's built like this
as standard.

branches: 1.2.4;
Deleted m68k_round_seg and m68k_trunc_seg. They're in common m68k/param.h now.

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.

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: 1.2.4; 1.2.8; 1.2.16;
G/C some obsolete HP-UX related flags, and prevent multiple
inclusion while I'm here.

branches: 1.1.1;
Initial revision

mvme68k port -- for the motorola vme147 m68030 card

Make MVMEPROM_ARG2() macro take two args in a single asm statement.

Fixes a problem that a wrong address is passed to the MVMEPROM outstr
function (then caused garbages on screen) after we switched to gcc-4.5.
Reported and confirmed by Andrew Gillham on port-mvme68k@:
http://mail-index.NetBSD.org/port-mvme68k/2013/09/17/msg000084.html
http://mail-index.NetBSD.org/port-mvme68k/2013/09/19/msg000085.html
http://mail-index.NetBSD.org/port-mvme68k/2013/09/22/msg000095.html
http://mail-index.NetBSD.org/port-mvme68k/2013/09/22/msg000097.html
No error on "build.sh -m mvme68k build" builds.

Should be pulled up to netbsd-6 branches.

branches: 1.17.112; 1.17.118; 1.17.122; 1.17.124; 1.17.128; 1.17.134;
__asm__ -> __asm
__const__ -> const
__inline__ -> inline
__volatile__ -> volatile

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

merge ktrace-lwp.

branches: 1.14.16;
Modify the licences of code written by Theo De Raadt from a 4-clause
to a 2-clause licence (retaining UCB clauses (1) and (2)), per PR
22409 from Joel Baker, approved by Theo de Raadt, and ratified by
myself - the only discrepancy being the handling of the original
clause 3 in src/usr.sbin/yppoll/yppoll.c.

gcc3 bitches about a gratuitous use of __CONCAT(), so just delete it.

branches: 1.12.16;
The success/failure status for some Bug syscalls is indicated by the Z
flag in the status register, not by a value on the stack.

How this ever worked for so long is beyond me...

branches: 1.11.2; 1.11.6; 1.11.8;
Fix bootline argument passing from the Bug PROM.

branches: 1.10.2;
Add some #defines for offsets into the bugargs structure, and make the
register names usable within assembly code.

s/a6/fp/ again...

Prefix the register names with `%'.

Ditch an extra % in a register prefix, and s/a6/fp/

Add register prefixes.

branches: 1.5.14;
Changes to keep lint happy.
In particular, fix some Makefiles so the include
paths are passed to lint.

asm volatile -> __asm__ __volatile

branches: 1.3.14;
RCS id police.

move rb_nosym/rb_sboot here

import Theo's prom.h from OpenBSD. includes my recent changes.

mvme68k port -- for the motorola vme147 m68030 card

__HAVE_NEW_PMAP_68K glue.

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

branches: 1.1.1;
Initial revision

mvme68k port -- for the motorola vme147 m68030 card

mvme68k port -- for the motorola vme147 m68030 card

branches: 1.2.4;
Merge newlock2 to head.

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

mvme68k port -- for the motorola vme147 m68030 card

Minor change.

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.

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: 1.3.42; 1.3.220;
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.

mvme68k port -- for the motorola vme147 m68030 card

Switch mvme68k over to the common interrupt dispatch code and G/C
__HAVE_LEGACY_INTRCNT.

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

branches: 1.14.110; 1.14.112;
Now that __HAVE_TIMECOUNTER and __HAVE_GENERIC_TODR are invariants,
remove the conditionals and the code associated with the undef case.

Add timecounter(9) support for mvme68k.

Based on a patch from Garrett D'Amore and several tweaks by me.
Compile tested only, but reviewed by joerg@ and
no objection from scw@ on port-mvme68k.

branches: 1.12.2; 1.12.8;
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: 1.11.10;
Generic soft interrupts are mandatory.

branches: 1.10.10; 1.10.18;
Convet to MI todr. Ok steve@.

branches: 1.9.32; 1.9.50; 1.9.62;
Use "#define<tab>".

branches: 1.8.4; 1.8.8;
Rename __GENERIC_SOFT_INTERRUPTS to __HAVE_GENERIC_SOFT_INTERRUPTS,
and place the definition in <machine/types.h>. This can now be used
as a flag to indicate whether or not <machine/intr.h> can be included
to get the generic soft interrupt API.

Nuke __BROKEN_DK_ESTABLISH, and add __HAVE_DEVICE_REGISTER.

__BROKEN_CONFIG_UNIT_USAGE is no longer required for mvme68k.

Nuke dk_establish() from orbit except from those ports which still use
it to determine the boot device: mvme68k, pc532, macppc, ofppc. Those
platforms should be changed to use device_register(). In the mean time,
those ports defined __BROKEN_DK_ESTABLISH.

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

branches: 1.3.24;
Get rid of __BDEVSW_DUMP_OLD_TYPE and __BROKEN_INDIRECT_CONFIG.

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

Switch mvme68k over to the common interrupt dispatch code and G/C
__HAVE_LEGACY_INTRCNT.

Switch mvme68k to the common m68k vector table.

G/C unused P1PAGES.

__HAVE_NEW_PMAP_68K glue.

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: 1.38.30;
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: 1.37.2; 1.37.4;
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: 1.36.14;
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: 1.34.14; 1.34.32; 1.34.36; 1.34.40;
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@.

branches: 1.33.2; 1.33.4;
Remove "last kernel PT page" stuff derived from hp300 where PA != VA.

Compile test only, but same changes as other PA == VA m68k ports like
luna68k, news68k, and x68k used for a decade.

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: 1.28.20; 1.28.28; 1.28.34;
defparam PAGER_MAP_SIZE.

branches: 1.27.30; 1.27.48; 1.27.50; 1.27.54;
merge ktrace-lwp.

branches: 1.26.2;
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: 1.25.8; 1.25.10;
Move UCB-licensed code from 4-clause to 3-clause licence.

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

branches: 1.24.2;
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: 1.21.2; 1.21.8;
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.

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.

Compute PAGER_MAP_SIZE at runtime to avoid needlessly crippling large-
memory models for the benefit of small-memory models.

Uses a heuristic of min(onboard_ram_size/2, 16MB).

Define a PAGER_MAP_SIZE of 4MB for the benefit of low-memory models.
XXX: This may still not be low enough for models with less than 8MB RAM...

branches: 1.17.2;
Remove unused pcbb() macro.

We use 4K pages on the mvme68k. Override PAGE_SIZE and friends to
be compile-time constants.

Bump DFLDSIZ to 32MB since 16MB is no longer enough for some
parts of `make build'.

Update for the NKMEMPAGES changes.

Remove obsoleted macros.

CL* discarding.

branches: 1.11.2; 1.11.8;
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: 1.10.6;
MNN is no longer optional

vm_offset -> [vp]addr_t and vm_size_t -> [vp]size_t
While I'm here, expunge use of 'register' storage class.

Put VMEbus RAM on a lower priority free list, since it's much slower (because
the MVME-147 doesn't cache access to any VMEbus space).

Make MACHINE_NEW_NONCONTIG non-optional.

Implement changes for MACHINE_NEW_NONCONTIG and UVM.

Move MACHINE_NONCONTIG from std.mvme68k to <machine/vmparam.h> as per
Jason's request.

branches: 1.4.2;
update comment from 1981 on memory and disk prices -- pr-2754 from Curt Sampson

bring mrg-vm-swap2 onto mainilne.

branches: 1.2.6; 1.2.10;
cpu.h: add prototypes (from jason)
disklabel.h: new disklabel format (from Dale Rahn)
param.h: new delay stuff (from sun3 port)
vmparam.h: nuke eiomap for new autoconfig (from jason)
z8530var.h: for MI driver (from jason)

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: 1.12.6;
Misc cleanup:
- KNF, ANSIfy, remove __P()
- use __func__ to print function names
- use __arraycount()
- include "ioconf.h" for struct cfdriver
- u_intNN_t -> uintNN_t
- wrap long lines
etc.

branches: 1.11.6;
Ensure that file ends with a newline.

Merge tty changes from the vmlocking branch.

branches: 1.9.30; 1.9.48; 1.9.50; 1.9.54; 1.9.56;
merge ktrace-lwp.

branches: 1.8.16;
Move UCB-licensed code from 4-clause to 3-clause licence.

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

branches: 1.7.8; 1.7.24;
Deprecate intrcnt/intrnames in favour of the generic evcnt(9) interface.

branches: 1.6.2;
Define `splzs()' to be `splserial()' instead of `spl4()', which was
wrong anyway since it blindly set SPL to 4 regardless of the prevailing
level.

Implement generic soft interrupts for mvme68k.
Based on Jason Thorpe's Alpha implementation.

branches: 1.4.30; 1.4.42;
Adapt to the new version of dev/ic/z8530*
(Note: now define zsc_softc here.)

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

cpu.h: add prototypes (from jason)
disklabel.h: new disklabel format (from Dale Rahn)
param.h: new delay stuff (from sun3 port)
vmparam.h: nuke eiomap for new autoconfig (from jason)
z8530var.h: for MI driver (from jason)