triple "r" typos, mainly s/interrrupt/interrupt/ in comments and one definition.

Start teaching sh3 code about STX7105.

Kernel option STX7105 to select CPU product (TODO: all of the options
that select CPU product should be defflag'ed to opt_cputype.h).

The ST40 cache sizes can be customized for each product. For now just
hardcode the STx7105 values in the switch, but may be they should be
kernel options.

Fix "error: variable 's' set but not used [-Werror=unused-but-set-variable]"

branches: 1.74.12; 1.74.26;
Change <machine/bus.h> to <sys/bus.h> throughout.

Split bus.h -> bus_{defs,funcs}.h.

Mark evbsh3/bus.h obsolete.

Need <machine/pcb.h> to define struct pcb.

branches: 1.72.2;
Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

Added support following boards.
- AlphaNet MS104-SH4
- TAC T-SH7706LAN Ver.3
- TAC T-SH7706LSR Ver.1

branches: 1.70.2; 1.70.4;
- Use uvm_lwp_setuarea() instead of directly setting address to lwp_t::l_addr.
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb().
- Amend assembly in ports where it accesses PCB via struct user.
- Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.

Add a flags argument to pmap_kenter_pa(9).
Patch showed on tech-kern@ http://mail-index.netbsd.org/tech-kern/2009/11/04/msg006434.html
No objections.

Added SH7706, SH7750R, SH7751 and SH7751R support.

Ansify function definitions w/o arguments. Generated with sed.

ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.

branches: 1.63.4;
As discussed on tech-kern: mutex_init is too heavyweight for early bootstrap
phases, so move the initialization of the ksyms mutex back into main via
a function called ksyms_init. Rename the existing (but quite different)
ksyms_init* variations into ksyms_addsyms_elf() and ksyms_addsyms_explicit()
and adapt machdep code accordingly.

Remove LKMs and switch to the module framework, pass 1.

Proposed on tech-kern@.

It is not appropriate to call pmf_system_shutdown(9) from
doshutdownhooks(9): shutdown hooks registered by shutdownhook_establish(9)
expect to be called with interrupts disabled, but shutdown hooks
registered with pmf_device_register1(9) expect to be called with
interrupts enabled. So I have made two changes:

1 Do not call pmf_system_shutdown() from doshutdownhooks(). Instead,
change every call to doshutdownhooks() to a call to doshutdownhooks()
followed by a call to pmf_system_shutdown(). No functional change
is intended by this change.

2 Make i386 re-enable interrupts briefly while it calls
pmf_system_shutdown(). I leave it to others either to fix the
other ports, or to factor out some MI shutdown code, as joerg@
suggests, and fix that. Note that a functional change *is* intended
by this change.

I hope that this patch will stop us from flip-flopping between
calling doshutdownhooks() and pmf_system_shutdown() sometimes with
and sometimes without interrupts enabled.

branches: 1.60.6; 1.60.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.59.6; 1.59.8; 1.59.10;
Now that sh3 has didicated interrupt stack we can check for cpu_intr_p
with simple sp comparison, so we can drop ci_idepth.

branches: 1.58.6;
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: 1.57.18; 1.57.36; 1.57.44;
Stop using linker scripts on all sh3 ports.

The only information to be compensated is text section start address.
The default value is set arch-wise as DEFTEXTADDR. Each kernel config
can override the default value by setting TEXTADDR.

Tested on COMPUTEXEVB (evbsh3).

Reviewed By: uwe

branches: 1.56.4; 1.56.6; 1.56.8; 1.56.10; 1.56.12;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

bus_dmamem_map: honour BUS_DMA_NOWAIT. noted by Manuel Bouyer.
bus_space_map: always do NOWAIT allocation as it used to be before yamt-km.

we have too many copies!

branches: 1.54.2; 1.54.8;
Adapt to compiling with -Wcast-qual by sprinkling around some consts.
Had to use __UNCONST() in one case of sysctl_lookup() use.

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.

Don't compare scalars against NULL, use 0

branches: 1.51.8; 1.51.10;
Tango on sysctl_createv() and flags. The flags have all been renamed,
and sysctl_createv() now uses more arguments.

Spell controller with two ls. Inspired by miod@openbsd.

Dynamic sysctl.

Gone are the old kern_sysctl(), cpu_sysctl(), hw_sysctl(),
vfs_sysctl(), etc, routines, along with sysctl_int() et al. Now all
nodes are registered with the tree, and nodes can be added (or
removed) easily, and I/O to and from the tree is handled generically.

Since the nodes are registered with the tree, the mapping from name to
number (and back again) can now be discovered, instead of having to be
hard coded. Adding new nodes to the tree is likewise much simpler --
the new infrastructure handles almost all the work for simple types,
and just about anything else can be done with a small helper function.

All existing nodes are where they were before (numerically speaking),
so all existing consumers of sysctl information should notice no
difference.

PS - I'm sorry, but there's a distinct lack of documentation at the
moment. I'm working on sysctl(3/8/9) right now, and I promise to
watch out for buses.

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

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

__KERNEL_RCSID()

branches: 1.46.2;
Call ksyms_init() instead of ddb_init() in case of
NKSYMS || defined(DDB) || defined(LKM)

Use PAGE_SIZE rather than NBPG.

Merge the nathanw_sa branch.

initSH3(): prefix the extern edata[], end[] with '_', so that the kernel links
XXX this is probably wrong, other sh3 platforms don't need/have this

branches: 1.42.6;
Don't reset to old interrupt level at the exit of interrupt handler.
It didn't ensure the maximum interrupt nest depth.

adapt to new pmap.

adapted to new interrupt code and shb changes.

cosmetic changes, fix comments.

adapt to kernel stack treatment changes.

proc0 and page table intialize routines are moved to sh3_machdep.c

remove unneeded code and files.

machine dependent sysctl are moved to machine/cpu.h
dreamcast, hpcsh ... CPU_CONSDEV
mmeye, evbsh3 ... CPU_CONSDEV, CPU_LOADANDRESET

cpu_dumpconf, reserve_dumppages, dumpsys, cpu_reset are moved to sh3/sh3_machdep.c

Cleanup register definition

Move common exception vector and scheduler code to
sh3/sh3/exception_vector.S and sh3/sh3/locore_subr.S. exception
vectors are installed by sh_cpu_init(). machine/locore.S contains
kernel entry, interrupt handler, and some MD code.

Clean up functions
disable_intr, enable_intr, disable_interrupt, enable_interrupt,
disable_ext_intr, enable_ext_intr.
New functions:
for external interrupt:
_cpu_intr_suspend and _cpu_intr_resume.
for exception:
_cpu_exception_suspend and _cpu_exception_resume.

sh_cpu_init() is added. its initialize cache, MMU ops appropriately.
machine locore code call this at first.

sync with PTE bit change.

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: 1.27.2; 1.27.4;
bcopy -> memcpy
bzero -> memset

add missing #include "opt_kgdb.h"

Sprinkle pmap_update() calls after calls to:
- pmap_enter()
- pmap_remove()
- pmap_protect()
- pmap_kenter_pa()
- pmap_kremove()
as described in pmap(9).

These calls are relatively conservative. It may be possible to
optimize these a little more.

typo
PGOFFSET -> PGOFSET

branches: 1.23.2;
fix last commit.

fix pmap_* arguments when SH4_PCMCIA is defined.

do not include mmeye.h

add shpcmcia_mem*() for SH4_PCMCIA

check whether both COMPUTEXEVB and SH7709A is defined to access special
register.

hide InitializeBSD if DONT_INIT_BSC is defined

remove include of <vm/vm.h>.

remove/move more mach vm header files:

<vm/pglist.h> -> <uvm/uvm_pglist.h>
<vm/vm_inherit.h> -> <uvm/uvm_inherit.h>
<vm/vm_kern.h> -> into <uvm/uvm_extern.h>
<vm/vm_object.h> -> nothing
<vm/vm_pager.h> -> into <uvm/uvm_pager.h>

also includes a bunch of <vm/vm_page.h> include removals (due to redudancy
with <vm/vm.h>), and a scattering of other similar headers.

branches: 1.15.2;
defopt SYSCALL_DEBUG.

branches: 1.14.2;
Centralise the declarations of cpu_model, machine, machine_arch,
osrelease, and ostype and remove "extern char foo[];" (for hostname
and domainname too).

Also delete redunctant decl of boottime in kern_info_43.c.

set SQMD bit when sh4

use BSC_PCR_VAL

use SDMR2 and SDMR3

move MMUCR register definitions into mmureg.h

SH4!

variable start address of the main memory (now we can use
the area 2 as main memory with "options IOM_RAM_BEGIN=0x88000000")

Move callout initialization to a single location; no need to duplicate
that code all over the place.

use macros

branches: 1.5.2;
Move common parts of machdep.c to sh3_machdep.c.

- set nkpde from IOM_RAM_SIZE
- remove MMEYE_LED

sync with mmeye

Sync with -current.

Merge in NetBSD/sh3 from cvs.kame.net repository.

Tree structure:
- sys/arch/sh3: sh3 generic code
As commented, in-chip device drivers are put into sys/arch/sh3/dev.
- sys/arch/evbsh3: sh3 evaluation boards (pure sh3 CPU, no fancy external HW)
- sys/arch/mmeye: Brains mmEye, www.brains.co.jp
MI source code includes couple of #ifdef for sh3-coff support.
(sh3 uses coff or elf)

Needs some more improvements, especialy in sys/arch/sh3/conf/files.sh3,
to compile the tree (due to last minute tree structure change).