Merge common sun68k types defns into <sun68k/types.h>.

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

branches: 1.1.8;
Added a Makefile to install sun68k common headers.

Split device_t/softc with misc cosmetic changes.

branches: 1.9.2; 1.9.4;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.52; 1.8.54; 1.8.56;
Move declarations of mainbus_dma_tag and mainbus_space_tag
to <sun68k/autoconf.h>.

branches: 1.7.20; 1.7.22;
merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.5.2;
adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes

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

branches: 1.3.2;
use the generated macros in locators.h rather than hard-coded numbers
to index the cf_loc[] array. reviewed by allen briggs.

branches: 1.2.8; 1.2.24;
Now give at least the appearance of having bus-specific
attach args. In reality everything is still one structure,
now called mainbus_attach_args, and a series of macros
creates the illusion.

Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

Fix various typos in comments.

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

Reviewed by christos.

branches: 1.18.54;
mark bus functions as static inline, not just plain inline.

- avoid extra offset calculation in region/multi ops
- fix swapped dist/src in copy_region ops

branches: 1.16.2; 1.16.4;
Remove clause 3 and 4 from TNF licenses

branches: 1.15.40; 1.15.42; 1.15.44;
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: 1.13.4;
- change find_prom_map() to take paddr_t and return vaddr_t rather than
bus_space_handle_t since bus space handle without bus space tag looks weird
- replace old sun3 obio_find_mapping() with new common find_prom_map()
- add bus_space_vaddr(), from hp300

First attempt at bus_space(9) support for sun3 with common sun68k/bus.c:
- make sun3 port use common sun68k files as much as possible
- add temporary options _SUN2_ in std.sun2 until sun3 can share all
sun68k files (autoconf.c and isr.c are not yet)
- move sun68kvme declaration temporary as well from files.sun68k to files.sun2
- rename and move sun68k_find_prom_map() function to MD sources since it
can't be shared with sun3
- add bus tag members to struct confargs and initilize them where appropriate

XXX1: MD bus_dma(9) backends are not implemented (yet).
XXX2: more code (obio etc.) should be shared among sun3, sun3x and sun2.

branches: 1.11.14; 1.11.16;
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: 1.10.2; 1.10.4; 1.10.6;
__asm__ -> __asm
__const__ -> const
__inline__ -> inline
__volatile__ -> volatile

merge ktrace-lwp.

branches: 1.8.4;
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: 1.7.2;
de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.

branches: 1.6.8;
make compile

branches: 1.5.2;
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.

Implement bus_space_mmap.

branches: 1.2.6;
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: 1.1.2;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

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.

Correction to previous.

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().

Remove inclusion of old m68k/sysctl.h

branches: 1.23.28; 1.23.30;
make cpu_need_resched() macros consistent; __USE flags

branches: 1.22.8; 1.22.18; 1.22.22;
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.

branches: 1.21.4;
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: 1.20.10;
Also account idepth in clock interrupt handlers
(which are registered directly by isr_add_custom())
and use the idepth value for CLKF_INTR().

branches: 1.19.2;
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: 1.18.2;
Add ci_cpuid where it's missing.

branches: 1.17.2; 1.17.4; 1.17.8;
Move declarations of m68k common functions
from <machine/cpu.h> to <m68k/m68k.h>.
While here, remove some obsolete function decls.

Make netintr() static since it's referred only in sun68k/isr.c.

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.

Adapt sun68k ports to yamt-idlelwp.
Tested on TME (sun2 and sun3) and 3/80 (sun3x).

branches: 1.13.6; 1.13.8; 1.13.14;
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.

Minor cleanups before isr.c merge with sun3:
- include <m68k/cpu.h> rather than <m68k/m68k.h> in <sun68k/cpu.h>
- wrap M68K_VAC definition with #ifndef _SUN3X_ in <sun68k/cpu.h>
- move setsoftnet() macro from <sun68k/cpu.h> to <sun68k/intr.h>
- move declarations for isr_soft_request() and isr_soft_clear() from
sun2/include/intr.h to <sun68k/intr.h>
- remove extern keyword from function declarations

branches: 1.10.20; 1.10.22;
merge ktrace-lwp.

branches: 1.9.8;
de-__P, remove register, ansify, b* -> mem*, u_int*_t -> uint*_t.

branches: 1.8.4;
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

make compile

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

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

branches: 1.4.2;
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.

branches: 1.2.8;
Use _KERNEL_OPT.

Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

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.

merge ktrace-lwp.

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

branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

Remove clause 3 and 4 from TNF licenses

branches: 1.4.74; 1.4.76; 1.4.78;
merge ktrace-lwp.

Move common Sun ID PROM definitions into <dev/sun/idprom.h>.

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

branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

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

G/C __HAVE_LEGACY_INTRCNT from the sun68k platforms.

Switch the sun68k platforms over to the common m68k interrupt dispatch code.

Don't bother with isr_add_custom(). It's just a thin wrapper around
vec_set_entry(), so just use vec_set_entry() directly.

Make getsr() an inline in <m68k/psl.h> and G/C all of the now-redudant
copies.

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

branches: 1.20.114;
Make cpu_intr_p() inline.

Unify splraiseipl(9) implementation among m68k ports as per
suggestion from isaki@ on port-m68k.

For sun68k (sun2, sun3 and sun3x):
- 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)

branches: 1.18.6; 1.18.8; 1.18.10; 1.18.12; 1.18.14;
Also account idepth in clock interrupt handlers
(which are registered directly by isr_add_custom())
and use the idepth value for CLKF_INTR().

Adapt sun68k ports to recent interrupt handling changes.

XXX: sun2 (m68010) doesn't have CAS instructions.

branches: 1.16.2;
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.

Merge tty changes from the vmlocking branch.

branches: 1.14.16; 1.14.18; 1.14.22; 1.14.24;
- use splraise4(), which is defined in psl.h
- use splraise6() rather than spl6() for splzs() and splserial()

- 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: 1.12.2; 1.12.6;
Remove spllowersoftclock() and CLKF_BASEPRI(), and always dispatch callouts
via a soft interrupt. In the near future, softclock will be run from process
context.

Two fixes to avoid lost softintr (probably caused by some race condition):
- make sh_pending in struct softintr_handler volatile
- activate softintr unconditionally in softintr_schedule()

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.

Minor cleanups before isr.c merge with sun3:
- include <m68k/cpu.h> rather than <m68k/m68k.h> in <sun68k/cpu.h>
- wrap M68K_VAC definition with #ifndef _SUN3X_ in <sun68k/cpu.h>
- move setsoftnet() macro from <sun68k/cpu.h> to <sun68k/intr.h>
- move declarations for isr_soft_request() and isr_soft_clear() from
sun2/include/intr.h to <sun68k/intr.h>
- remove extern keyword from function declarations

branches: 1.8.4; 1.8.6;
Workaround fix for a problem caused after IPL_* macro changes.
Based on a patch from mrg on port-sun2.

implement splraiseipl() for sun2 and sun3. reviewed by Izumi Tsutsui.

branches: 1.6.2; 1.6.4; 1.6.6;
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: 1.5.2; 1.5.4; 1.5.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.3.8;
move spl*() and IPL_* definitions from psl.h to intr.h.

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

branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

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: 1.4.44; 1.4.60;
Remove clause 3 and 4 from TNF licenses

branches: 1.3.72; 1.3.74; 1.3.76;
free -> dealloc
unsigned -> size_t for alloc/dealloc

branches: 1.2.2; 1.2.34; 1.2.46;
Split elf32 vs. elf64 handling in loadfile(), including support for
each separately and explicitly. BOOT_ELF is now BOOT_ELF32 and
BOOT_ELF64, and ELFSIZE should no longer be defined in loadfile_machdep.h.

branches: 1.1.2; 1.1.6;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

Make sun68k/stand build without installed ${DESTDIR} files.

Currently "machine" symlink points sys/arch/sun68k/include,
but this means some <machine/foo.h> files are taken from
sys/arch/sun68k/include but others (i.e. files not in sun68k/include)
are taken from ${DESTDIR}/usr/include/machine.

Instead, make "machine" symlink point sys/arch/${MACHINE}/include,
make "sun68k" symlink point sys/arch/sun68k/include (not sys/arch/sun68k),
add sys/arch to include path, and move some files where appropriate.

branches: 1.3.22; 1.3.52;
Reverted previous commit. It was meant to fix a problem that
was already fixed by nathanw, had I bothered to check.

Now make a machine/ directory with symlinks to a small number
of machine-specific headers. When ${MACHINE} is sun2, this
allows building the sun3 and sun3x parts of libsa, which need
things like <machine/param3.h> and <machine/param3x.h> to be
#includeable.

branches: 1.1.2; 1.1.8; 1.1.16;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

Fix typo in comment.

Remove clause 3 and 4 from TNF licenses

branches: 1.4.74; 1.4.76; 1.4.78;
merge ktrace-lwp.

Add const.

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

branches: 1.1.8; 1.1.24; 1.1.32;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

branches: 1.2.4;
Merge newlock2 to head.

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

merge ktrace-lwp.

move spl*() and IPL_* definitions from psl.h to intr.h.

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

branches: 1.2.8; 1.2.24; 1.2.32;
Now define splzs() here.

Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.

branches: 1.2.4;
Merge newlock2 to head.

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

G/C __HAVE_LEGACY_INTRCNT from the sun68k platforms.

Switch the sun68k platforms over to the common m68k interrupt dispatch code.

Merge common sun68k types defns into <sun68k/types.h>.

Switch the sun68k platforms over to the common m68k interrupt dispatch code.

Switch the sun68k platforms over to the common m68k vector table.