CVS log for src/sys/arch/amiga/amiga/machdep.c

Up to [cvs.NetBSD.org] / src / sys / arch / amiga / amiga

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Keyword substitution: kv
Default branch: MAIN

Move the at-shutdown call to resettodr() from cpu_reboot() to kern_reboot().

It's a small step, but it's a step.

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

Remove unnecessary <sys/malloc.h> include.

PR port-amiga/55233 Process hangs indefinitely if not calling syscalls for a while

cpu_intr_p() is broken on amiga, fix it.

From code inspection it looks like amiga and other m68k ports check for ASTs
with interrupts enabled in some cases, which is racy.  Not fixed.

Sync with HEAD

cnpollc needs to be called before cngetc

Sync with HEAD, resolve a few conflicts

build fix for M68020,M68030. gcc complains about the local typedef that
isn't used.

can't use fnop directly now, explain why.

update from HEAD

Sync with HEAD

Simplify. error is constant, so replace it by its value. NFCI

Restore all work from the former pgoyette-localcount branch (which is
now abandoned doe to cvs merge botch).

The branch now builds, and installs via anita.  There are still some
problems (cgd is non-functional and all atf tests time-out) but they
will get resolved soon.

Sync with HEAD

Sync with HEAD.  (Note that most of these changes are simply $NetBSD$
tag issues.)

Remove conflicting declaration of physmem

Adapt the machine/arch dependent code to the new {b,c}devsw reference
counting.

XXX Most of these will require testing by someone other than myself, as
I have a limited selection of hardware!

Sync with HEAD

appease compiler. Fixes options MODULAR build.

Sync with HEAD

btoc is already rounding up to click size, use predefined ctod macro
to translate to disk blocks.

Pull up following revision(s) (requested by mlelstv in ticket #838):
	sys/arch/amiga/amiga/machdep.c: revision 1.244
Fix space calculation for dump header. Round up to clicks to avoid
disk alignment issues.

Fix space calculation for dump header. Round up to clicks to avoid
disk alignment issues.

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

use cpu_{g,s}etmodel

kill sprintf
fix unused variables

resync with head

Power down only if RB_POWERDOWN. Noticed by phx@ .

Plug empm(4) into system halt function.

sync with head

Declare physmem extern. It is actually initialized in amiga_init.c
(using RELOC). Discussed with martin@ and is@. Probably similar fix should
be applied to other m68k ports, but amiga is the only m68k machine I have.

Remove safepri and use IPL_SAFEPRI instead.  This may be defined in a MD
header file (if not, a value of 0 is assmued).

sync with head

merge to -current.

Amiga wscons/Xorg support, first phase.
Implemented wscons for CV64 and CV64/3D. Other graphics cards drivers are
prepared for it, but will not be attempted before Xorg is not running.
The wscons support is disabled by default. A GENERIC kernel should behave
like always. Use WSCONS to try out a kernel with wscons support.
Done by rkujawa@ and phx@.

implement bdev_size(9) wrapper around d_psize() routine, so we can take
the device lock in relevant places.  avoid doing so while actually dumping.

tested i386 crash dumps still work, and that all touched files compile.

fixes PR#45705.

identifycpu() is not just cosmetic for the banner but initializes how FPU
contexts are saved.
Also drop code that checks for fputype before it is determined.

Catchup with rmind-uvmplock merge.

Welcome to 5.99.53!  Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
  New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
  the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
  Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
  kernel-lock on some ports).  Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.

Sync with HEAD.

sync with head

- 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.

sync with head

Use MI routine banner() to print memory size. Also fixes output for systems
with 2GB RAM.

sync with head

Sync with HEAD

Refactor ps_strings access. Based on PK_32, write either the normal
version or the 32bit compat layout in execve1. Introduce a new function
copyin_psstrings for reading it back from userland and converting it to
the native layout. Refactor procfs to share most of the code with the
kern.proc_args sysctl handler.

This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.

Sync with HEAD

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@.

Explicitly include <machine/pcb.h> for struct pcb.

Recognize Amiga 600 model.
Patch submited by Radoslaw Kujawa.

Sync with HEAD (-D20101022).

Prepare empty module_init_md() for options MODULAR for all other m68k ports.

Sync with HEAD.

sync with head.

sync with head

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

Sync with HEAD.

sync to netbsd-5

Unify /dev/{mem,kmem,zero,null} implementations in MI code.  Based on patch
from Joerg Sonnenberger, proposed on tech-kern@, in February 2008.

Work and depression still in progress.

sync with head

Remove separate mb_map. The nmbclusters is computed at boot time based
on the amount of physical memory and limited by NMBCLUSTERS if present.
Architectures without direct mapping also limit it based on the kmem_map
size, which is used as backing store. On i386 and ARM, the maximum KVA
used for mbuf clusters is limited to 64MB by default.

The old default limits and limits based on GATEWAY have been removed.
key_registered_sb_max is hard-wired to a value derived from 2048
clusters.

Change u_long to vaddr_t/vsize_t in exec code where appropriate (mostly
involves setregs and vmcmds).  Should result in no code differences.

Move initialization of protection_codes[] and kernel_pmap()
from MD pmap bootstrap sources to common pmap_bootstrap_finalize().

Tested on atari, hp300, mac68k, and news68k.

XXX: Why is protection_codes[] array initialized at run time?

Pull up following revision(s) (requested by mhitch in ticket #1166):
	sys/arch/amiga/amiga/machdep.c: revision 1.222
Remove old legacy IPL_* settings in ipl2spl_table - they are redundant
and in the case of IPL_AUDIO, results in IPL_VM blocking all interrupts.
[IPL_AUDIO is now the same as IPL_VM, and was setting the IPL_VM entry
to PSL_IPL6.  IPL_SERIAL had a duplicate entry for some reason, and
serial drivers that check and modify IPL_SERIAL now shouldn't be affected
since IPL_SERIAL is now the same as IPL_HIGH.  I'm hoping this will fix
or at least help the problem of serial interrupts being blocked too long.

Remove old legacy IPL_* settings in ipl2spl_table - they are redundant
and in the case of IPL_AUDIO, results in IPL_VM blocking all interrupts.
[IPL_AUDIO is now the same as IPL_VM, and was setting the IPL_VM entry
to PSL_IPL6.  IPL_SERIAL had a duplicate entry for some reason, and
serial drivers that check and modify IPL_SERIAL now shouldn't be affected
since IPL_SERIAL is now the same as IPL_HIGH.  I'm hoping this will fix
or at least help the problem of serial interrupts being blocked too long.

Use lwp_getpcb() on m68k ports, clean from struct user usage.

sync with head

Removed old Amiga-specific "sicallback" software interrupts and replaced
them by MI softints. Approved by "is".

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Sync with HEAD.

bzero -> memset

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

ANSIfy functions with function-pointer arguments

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.)

Sync with HEAD.

Use "defopt MODULAR" in sys/conf/files, and #include "opt_modular.h"
in all kernel sources that use the MODULAR option.
Proposed in tech-kern on 18 Jan 2009.

Pull up following revision(s) (requested by ad in ticket #346):
	sys/arch/alpha/alpha/machdep.c: revision 1.311
	sys/arch/amiga/amiga/machdep.c: revision 1.211
	sys/arch/atari/atari/machdep.c: revision 1.153
	sys/arch/hp700/hp700/machdep.c: revision 1.53
	sys/arch/i386/i386/dumpsys.c: revision 1.5
	sys/arch/mips/mips/mips_machdep.c: revision 1.206
	sys/arch/mvme68k/mvme68k/machdep.c: revision 1.132
	sys/arch/news68k/news68k/machdep.c: revision 1.75
	sys/arch/next68k/next68k/machdep.c: revision 1.88
	sys/arch/sparc/sparc/machdep.c: revision 1.285
	sys/arch/sparc64/sparc64/machdep.c: revision 1.230
	sys/arch/sun2/sun2/machdep.c: revision 1.56
	sys/arch/sun3/sun3/machdep.c: revision 1.188
	sys/arch/sun3/sun3x/machdep.c: revision 1.114
	sys/arch/x68k/x68k/machdep.c: revision 1.153
dumpsys: don't spew numbers into the log.

Re-adapt to the changed return types for major() and minor().

Sync with HEAD.

Sync with HEAD.

fix dev_t printf formats.

Update haad-dm branch to haad-dm-base2.

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.

dumpsys: don't spew numbers into the log.

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

Proposed on tech-kern@.

Sync with wrstuden-revivesa-base-2.

Sync with head.

Sync with HEAD.

Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

Sync with HEAD.

sync with head

sync with HEAD

Sync with HEAD

Add timecounter support and borrow counter-based delay from i386.
From joerg;  testing and final tweaks by me.

Sync with HEAD.

Sync with HEAD.

sync with head

Sync with HEAD.

Sync with HEAD.

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.

sync with HEAD

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.

Sync with HEAD

sync with head.

Sync with head.

Generic soft interrupts are mandatory.

Sync with head.

Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements

Sync with head.

Update to HEAD.

curlwp can't be NULL so no need to check it.

Sync with HEAD.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

- sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.

sync with head.

TRUE -> true, FALSE -> false

Sync with head.

sync with head.

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.

Sync with head.

pull 1.199 from trunk.

cpu_dumpconf: oops, redo the previous correctly.

pull 1.198 from trunk.

fix parenthesis mismatch in 1.197.  (hi mrg)

sync with head

in cpu_dumpconf(), don't panic() if we can't bdevsw_lookup() the
dumpdev.  this occurs when we try to set the dumpdev to a device
with no driver loaded.  this fixes PR#34872.

in sys_swapctl, if bdevsw_lookup() fails, set dumpdev = NODEV
before calling cpu_dumpconf().  (this also fixes PR#34872.)

XXX: cpu_dumpconf() should probably be changed to take a dumpdev
XXX: and return an error in such cases, but that is a much more
XXX: intrusive change.

XXX2: this is only run-tested on sparc64 and compile tested on a
XXX2: couple of platforms.

implement splraiseipl/makeiplcookie for amiga.

sync with head

sync with head.

sync with head.

Sync with head.

in the softintr-with-si_callbacks framework, don't use add_sicallback()
everytime softintr_schedule() is called. They don't have the same semantics
when called multiple times before the callback is triggered.
Should avoid huge numbers of si_callbacks being created when a machine is
overloaded.
XXX the fix certainly applies to the atari port, too.

bare asm -> __asm

merge ktrace-lwp.

Sync with HEAD. Here we go again...

sync with head.

Pull up following revision(s) (requested by chs in ticket #923):
	sys/arch/next68k/next68k/machdep.c: revision 1.73
	sys/arch/luna68k/luna68k/machdep.c: revision 1.42
	sys/arch/hp300/hp300/machdep.c: revision 1.184
	sys/arch/amiga/amiga/machdep.c: revision 1.193
	sys/arch/x68k/x68k/machdep.c: revision 1.129
	sys/arch/mac68k/mac68k/machdep.c: revision 1.306
	sys/arch/news68k/news68k/machdep.c: revision 1.61
	sys/arch/mvme68k/mvme68k/machdep.c: revision 1.113
	sys/arch/atari/atari/atari_init.c: revision 1.63
fix crash dumps on m68k platforms, cpu_kcore_hdr_t is larger than
512 bytes now so we need a bigger buffer.  PR 26958.

fix crash dumps on m68k platforms, cpu_kcore_hdr_t is larger than
512 bytes now so we need a bigger buffer.  PR 26958.

Constify pointers to string constants.

sync with -current

Move the MI printing of `copyright' to the MD cpu_startup() code
where the printing of `version' is already performed.
This has the benefit of allowing the copyright to be available
via dmesg(8) on platforms which need the `msgbuf' to be setup
in cpu_startup() before printed output is remembered.

Don't deref a NULL struct lwp *. This shouldn't happen, but...

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

Tango on sysctl_createv() and flags.  The flags have all been renamed,
and sysctl_createv() now uses more arguments.

Uppercase CPU, plural is CPUs.

Replace the traditional buffer memory management -- based on fixed per buffer
virtual memory reservation and a private pool of memory pages -- by a scheme
based on memory pools.

This allows better utilization of memory because buffers can now be allocated
with a granularity finer than the system's native page size (useful for
filesystems with e.g. 1k or 2k fragment sizes).  It also avoids fragmentation
of virtual to physical memory mappings (due to the former fixed virtual
address reservation) resulting in better utilization of MMU resources on some
platforms.  Finally, the scheme is more flexible by allowing run-time decisions
on the amount of memory to be used for buffers.

On the other hand, the effectiveness of the LRU queue for buffer recycling
may be somewhat reduced compared to the traditional method since, due to the
nature of the pool based memory allocation, the actual least recently used
buffer may release its memory to a pool different from the one needed by a
newly allocated buffer. However, this effect will kick in only if the
system is under memory pressure.

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.

Cast through (void *) to appease gcc3.

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

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

Apply the aborted ktrace-lwp changes to a specific branch.  This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it.  This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.

Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records.  The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

Make sure to include opt_foo.h if a defflag option FOO is used.

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.

Sync with HEAD.

interrupt with two rs.

Catch up to -current

We don't need sys/syscallargs.h here anymore.

Catch up to -current.

sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work

LWPify

Don't include <sys/map.h>.

Do not include <sys/clist.h>, it's not used in NetBSD at all.

Catch up to -current.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

	device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
  by using this grammer.

- Added the new naming convention.
  The name of the device switch must be <prefix>_[bc]devsw for auto-generation
  of device switch tables.

- The backward compatibility of loading block/character device
  switch by LKM framework is broken. This is necessary to convert
  from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
  We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
  the LKM framework will refer it to assign device major number dynamically.

sync kqueue branch with HEAD

catch up with -current.

Catch up to -current.

Make nbuf, nswbuf, and bufpages unsigned.  Make all operations on these
variables unsigned, and update places where their values are printed.

No longer need to pull in lwp.h; proc.h pulls it in for us.

Curproc->curlwp renaming.

Change uses of "curproc->l_proc" back to "curproc", which is more like the
original use. Bare uses of "curproc" are now "curlwp".

"curproc" is now #defined in proc.h as ((curlwp) ? (curlwp)->l_proc) : NULL)
so that it is always safe to reference curproc (*de*referencing curproc
is another story, but that's always been true).

catch up with -current on kqueue branch

Catch up to -current.

#include <sys/sa.h> before <sys/syscallargs.h>, to provide sa_upcall_t
now that <sys/param.h> doesn't include <sys/sa.h>.

(Behold the Power of Ed)

Replace the direct-access to devsw table with calling devsw API.

Eliminate commons.  (including a few unused or mismatched ones).

o replace definitions by declarations in header files
o put definitions where due
o cleanup some types  (u_int -> vaddr_t's for example)
o minor other cleanup

Catch up to -current.
(CVS: It's not just a program. It's an adventure!)

make this compile again

kill remaining PS_STRINGS instances.

Catch up with -current.

Change type of dumpmag to u_int32_t since it is actually
a 32bit unsigned magic number.
As per discussion on tech-kern, and fixes port-sparc64/11949.

Catch up to -current.

Sync w/ -current.

add __KERNEL_RCSID as suggested by Luke Mewburn

- ANSIfy
- remove some trailing spaces/tabs
- minor style nits

Sync kqueue branch with -current.

Catch up to -current.

If an FPU is available, call m68k_make_fpu_idle_frame() to generate
a reference FPU idle frame.

SA bits for Amiga.
Compile-tested only.

Sync the thorpej-mips-cache branch with -current.

file machdep.c was added on branch nathanw_sa on 2001-11-17 21:59:06 +0000

introduce an interrupt_depth variable which counts how nested we are into
interrupts.
This allows hardclock() to account for the time spent in interrrupts, and
as a side-effect, top(1), systat(1) and others will no more report 0% of
interrupt activity.

mvme68k does that already.

Catch up with -current.

Update the kqueue branch to HEAD.

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.

Catch up to -current.

replace vm_map{,_entry}_t with struct vm_map{,_entry} *.

make the defopted "LEV6_DEFER" work for LKMs, too.

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.

Catch up with -current.

Sync with HEAD.

eliminate the KERN_* error codes in favor of the traditional E* codes.
the mapping is:

KERN_SUCCESS			0
KERN_INVALID_ADDRESS		EFAULT
KERN_PROTECTION_FAILURE		EACCES
KERN_NO_SPACE			ENOMEM
KERN_INVALID_ARGUMENT		EINVAL
KERN_FAILURE			various, mostly turn into KASSERTs
KERN_RESOURCE_SHORTAGE		ENOMEM
KERN_NOT_RECEIVER		<unused>
KERN_NO_ACCESS			<unused>
KERN_PAGES_LOCKED		<unused>

Sync with HEAD.

Missing: register prefixes, _FOO_LABEL(n) macros, etc, in preparation for
ELFing the port. Patch provided by scw.

Sync with HEAD.

SIR_CLOCK is gone.

Sync with head (for UBC+NFS fixes, mostly).

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

Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

I updated the amiga SCSI drivers, but completely untested yet (may not even
compile)

Add an align argument to uvm_map() and some callers of that
routine.  Works similarly fto pmap_prefer(), but allows callers
to specify a minimum power-of-two alignment of the region.
How we ever got along without this for so long is beyond me.

Kwality control:
* put #includes of opt headers and headers to get protos used by
  net/netisr_dispatch.h in net/netisr.h (if !defined(_LOCORE)) (rather than
  in netisr_dispatch.h itself, and potentially nowhere, respectively).
* require netisr.h to be included before netisr_dispatch.h.
* minor additional cleanup of both netisr.h and netisr_dispatch.h.
* clean up uses to remove now-unnecessary header file inclusions, and
  local prototypes of the fns.
* convert netisr dispatch implementations which didn't use
  netisr_dispatch.h (pc532) to use it.

remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.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.

Sync w/ netbsd-1-5-base.

Do not clear msgbufenabled in dumpsys().  Dump messages will now go to
the message buffer. This can be invaluable in debugging if the dump
fails (assuming a persistant message buffer)

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.

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.

provide CCITT includes, and work around namespace collision

New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
  resource allocation.
- Insertion and removal of callouts is constant time, important as
  this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.

Define the DONETISR macro and use netisr_dispatch.h.  This is to cut down on code duplication and to standardize the available NETISRs across all ports.

fix include file.

	<netinet6/ip6.h>	->	<netinet/ip6.h>

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

check whether tv_usec >= 1000000

Pull up to last week's -current.

CL* discarding.

bring in latest KAME (as of 19991130, KAME/NetBSD141) into kame branch
just for reference purposes.
This commit includes 1.4 -> 1.4.1 sync for kame branch.

The branch does not compile at all (due to the lack of ALTQ and some other
source code).  Please do not try to modify the branch, this is just for
referenre purposes.

synchronization to latest KAME will take place on HEAD branch soon.

Sync with -current.

Update for pmap_enter() API change.  No functional difference.

vm_offset_t -> vaddr_t/paddr_t

eliminate the PMAP_NEW option by making it required for all ports.
ports which previously had no support for PMAP_NEW now implement
the pmap_k* interfaces as wrappers around the non-k versions.

Sync w/ -current.

Better align memory segment table.

- Call ip6intr if INET6 is defined.
- remove "need-flag" for mac68k esp driver, as it is not used in anywhere
  and conflicts with IPsec ESP header.

This should be the only MD change in IPv6 support, except kernel config file.
Very sorry if you have any compilation problem with it (I believe it is okay).
If your favorite arch is not included in here, please add a
call to ip6intr() from softintr handle.

KAME/NetBSD 1.4 SNAP kit, dated 19990628.

NOTE: this branch (kame) is used just for refernce.  this may not compile
due to multiple reasons.

Sync w/ -current.

Change the vm_map's "entries_pageable" member to a r/o flags member, which
has PAGEABLE and INTRSAFE flags.  PAGEABLE now really means "pageable",
not "allocate vm_map_entry's from non-static pool", so update all map
creations to reflect that.  INTRSAFE maps are maps that are used in
interrupt context (e.g. kmem_map, mb_map), and thus use the static
map entry pool (XXX as does kernel_map, for now).  This will eventually
change now these maps are locked, as well.

* convert to using MI allocsys(). most ports were using an MD allocsys(),
  although a couple still used the old pre-4.4-lite (?) mechanism.
* use format_bytes() to format the various printf()s that print out memory sizes

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.

pull up 1.133 -> 1.134:
add a `flags' argument to uvm_pagealloc_strat().
define a flag UVM_PGA_USERESERVE to allow non-kernel object
allocations to use pages from the reserve.
use the new flag for allocations in pmap modules.

add a `flags' argument to uvm_pagealloc_strat().
define a flag UVM_PGA_USERESERVE to allow non-kernel object
allocations to use pages from the reserve.
use the new flag for allocations in pmap modules.

Don't call configure() from cpu_startup().

Changes for modified pmap_enter() API:
* Map the message buffer with access_type = VM_PROT_READ|VM_PROT_WRITE `just
  because'.
* Map the file system buffers with access_type = VM_PROT_READ|VM_PROT_WRITE to
  avoid possible problems with pagemove().
* Do not use VM_PROT_EXEC with either of the above.
* Map pages for /dev/mem with access_type = prot.  Also, DO NOT use
  pmap_kenter() for this, as we DO NOT want to lose modification information.
* Map pages in dumpsys() with VM_PROT_READ.
* Map pages in m68k mappedcopyin()/mappedcopyout() and writeback() with
  access_type = prot.
* For now, bus_dma*(), pmap_map(), vmapbuf(), and similar functions still use
  access_type = 0.  This should probably be revisited.

completely remove Mach VM support.  all that is left is the all the
header files as UVM still uses (most of) these.

defopt BUFCACHE and BUFPAGES.

Garbage-collect `mbutl'.

appease egcs-1.1.1.

Implement softintr_disestablish().

All m680?0 User Manuals claim that trap vectors are fetched from the data
cache, if found there (but not allocated in the data cache on trap).
No need to flush the data cache.

Defopt SYSVMSG, SYSVSEM and SYSVSHM.

Include <sys/device.h> for the configure prototype.

revert pullup of 1.105 (done for 1.3.1), which broke SunOS binary execution
(PR#5782).  (is)

Add some braces to stop the new egcs warnings.

yet more atomic operations accessing DraCo registers

Add UVM support to amiga

* defopt COMPAT_{09,10,11,12,13} and COMPAT_NOMID.
TODO: revisit interaction between native compat and emul compat usage.

defopt NS, NSIP.

defopt ISO TPIP.

defopt INET, NETATALK.

defopt DDB.

Make 'end' references consistant.  Fixes PR#5670.

Change ddb_init() for a.out to provision for kernels which are not booted by
the current 'bootblock' method, like the Shark, which preloads and preformats
the symbol table right in the boot code.

Back out the defopt for M680?0. As pointed out to me, this breaks ports which
dont use the M680?0 the way Amiga, Atari, Mac68k, and X68k do. I must have
missed this in the past discussion about this project.

Move M680[2346]0 to opt_m68kcpu.h.
XXX Some explicit dependencies could be removed now from the individual
arch/$ARCH/conf/Makefile.$ARCH files, but this is still to be done.

MACHINE_NEW_NONCONTIG for NetBSD/Amiga. The older contiguous and
MACHINE_NONCONTIG stuff isn't supported anymore.

Disable the message buffer during crash dumps by clearing msgbufenabled,
not msgbufmapped.

Pull up 1.105-1.107 (is)

Amiga uses the common m68k/sig_machdep.c now. Also moved its definition from
the other 68k ports' files.${port} to arch/m68k/conf/files.m68k.

When dumping, print out the device number as major,minor.

- avoid system stack underflow when calling sigreturn via trap #0
- make sure all sigreturn error conditions are reported to the caller,
  instead of the place jumped to.
This is the bugfix part of pr 4628 by ITOH Yasufumi.
The performance optimization part will be handled seperately, after evaluating
its implications.
Testing on 68040 and removing the performance change from the proposed patch
by scottr. Half of the Amiga machdep.c change had to be done manually by me,
as the patchfile didn't apply cleanly.
XXX Yes, Amiga should be changed to use the common sig_machdep.c instead.
XXX Really soon now. I promise.

Support 68060 (and, for the Amiga, even 68040 buserr frames) in the sendsig()
and, indirectly, sigreturn() functions.
XXX The Amiga should be switched to using sig_machdep.c instead.

Standardize COMPAT_SUNOS -- remove all references to
sunos_exec_aout_makecmds() in machdep.c for various architectures and put
it in exec_conf.c like the other emulations; rename exec.h to
sunos_exec.h.

Stopgap measure to handle EXTER interupts for the DraCo. Maybe this should
be handled by the locore.s code like for Amigas, but DraCos dont have
necessarily a CIA B.

Part of this is voodoo from the sparc/machdep.c, part guesswork.

Update marc-pcmcia branch from trunk.

Use a global variable to hold the current speed of the internal serial port.
This will be used by certain SCSI drivers to limit the length of DMA transfers
when the serial port is running at higher speeds.  GVP and Phase5 DMA
interfers significantly with CPU execution, and significantly increases
receive buffer overruns (silo overflow).  Reducing the DMA transfer length
can reduce the overruns.

Wait for a keypress after the system is halted and reboot after a key is
pressed.

Update marc-pcmcia branch from trunk.

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.

Update marc-pcmcia branch from trunk.

Set the status word as well, and remove a bogus comment.

Eliminate some uses of FPCOPROC.

Always initialize all registers in setregs().

Fix execve(2) and *setregs() interfaces so emulations can set registers in a
more correct way.  (See tech-kern.)

Significantly restructure the way signal state for a process is stored.
Rather than using bitmasks to redundantly store the information kept
in the process's sigacts (because the sigacts was kept in the u-area),
hang sigacts directly off the process, and access it directly.

Simplify signal setup code tremendously by storing information in
the sigacts as an array of struct sigactions, rather than in a different
format, since userspace uses sigactions.

Make sigacts sharable by adding reference counting.

Update marc-pcmcia branch from trunk.

Add __GENERIC_SOFT_INTERRUPTS implementation.
Currently, this is only kind of a wrapper around the *_sicallback() function
family. This way, we'll only break the new driver if it doesn't work.
After more drivers are converted, we'll change it to be the other way round.

Amiga glue code for the m68k fpu emulation subsystem.
XXX This (the m68k FPE, not the glue code) is known to be broken for
68LC040/68040V and 68LC060 cpus. This is also the reason we don't
bother to add options FPU_EMULATE to the DRACO configuration file, as
DraCos only come in 68040V (very few) and 68060 variants.

Use function types for vectab,  instead of u_int8_t *.

bring mrg-vm-swap2 onto mainilne.

Initialize machine from MACHINE.

Reorganize buserr/addrerr stuff, to allow omitting unused code in single-cpu
kernels, at the same time getting rid of up to 3 conditional branches and a
bit over one cacheline fetch (for the 68060; the saving is a bit smaller for
040 and yet smaller for the 020/30).
While we're here, also get rid of an redundant lea (using SP-relative
addressing) and of two redundant pushes.
While we're here, also fix a panic which would tear us down on 68060 machines
if a branch prediction error ever occured.

re-merge mrg-vm-swap into -current, and call it mrg-vm-swap2.

- Adjust for new <m68k/kcore.h>
- garbage-collect regdump() and friends

Add netatalk netisr

ifdef NARP ->  if NARP > 0

Don't allocate mclrefcnt[]; it's dead and gone.

Renames: /dumpconf/cpu_dumpconf/, /boot/cpu_reboot/

If we #ifdef NARP, we should also #include "arp.h", not "ether.h".
Bug report and remote debugging by Bernd Ernesti.

New ARP system, supports IPv4 over any hardware link.

Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will
only support Ethernet. Tcpdump itself should be ok, but libpcap needs
lot of work.

For the detailed change history, look at the commit log entries for
the is-newarp branch.

netinet/if_ether.h => netinet/if_inarp.h

don't allocate swap map in allocsys.

Switch on branch prediction on the 68060. Also add some instrumentation
for branch prediction errors (could be used to detect strange binaries),
integer instruction, FP instruction, FP data type and FP effective address
emulations. The latter can be used to diagnose binaries which should be
recompiled with -m68060.

XXX Maybe these diagnostics should be switchable by sysctl or
XXX options DIAGNOSTIC.

Support for DraCo superio chip: level 5 interupt queue; amiga_ttyspl
variable (we need to set ttyspl to spl5 when the DraCo serial is active).

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

Merge netbsd-1-2 branch back into mainline.

a) replace our delay() with a Gordon Ross style one, calibrated at
   clock_attach() time (for now).
   This removes our dependance on the DraCo ROM access timing and frees
   the second CIA on Amigas.
b) support for DraCo rev. >= 4 native timer chips.

Change reboot(2) to take two arguments: bootopt like normal and also
a boot string for firmware that can do this, such as the SPARC and
the sun3 models.  It is currently silently ignored on all other
hardware now, however.  The MD function "boot()" has been changed to
also take a char *.

Pullup from trunk: Retina blanking bug, misc. cleanup including #ifdef'ing
out of annoying (to the normal user) debug code.

Fix few more places where 040+060 rlevant stuff was only compiled for 68040,
preventing 68060-only kernels to work. (68060 only kernel is tested now by
using it to commit this patch).

Show real interupt names (e.g., systat vmstat) on the DraCo.

Delete some occurences of kernel startup debug code, move others inside
#ifdef DEBUG_KERNEL_START.

Add some forgotten #ifdef M68060 to make gcc -Wall happy. While I'm here,
add the _kernel_text symbol for libkvm.

Another -Wall fix.

Make "options DRACO" kernels boot on Amiga mainboards, too:
- don't change the _lev2intr and _lev6intr entry points in static code
- set the level 2, 5, 5 and 6 interrupt autovectors from initcpu() on DraCo.

Fix for unused var warnings in compiler problem workaround.

Use new format for dumpfile and include chip memory in dump.
Fix another -Wall warning (from '060 integration).

Clean up the mess I left over from my yestereve's commit: partially unused
variables left over from color background debugging, partially wrong #ifdefs
making some variables unused in non-M68060 kernels.

First part of M68060 and DraCo support.

* for the M68060 part: store buffer and branch target cache aren't
  enabled yet (this needs cleanup of lots of locore.s code which is a
  maze of little passages, all a little different) (and it wasn't yet
  tested in an accellerated Amiga, only in the DraCo).

  I've included a workaround for 2 of the CPU bugs in chips with Masks
  1F43G and earlier, but didn't bother to deal with the can of worms
  in the [0-3]D11W chips. Be sure to get "68060 rev. 1" or more
  reported at kernel startup time, or at least mention it (or the mask
  revision, if available) when reporting problems.

* for the DraCo: only machines with a CIA timer.

  I assigned machine id 32000+nn (0x7Dnn), where n is the machine
  readable Quicklogic custom chip revision (also printed at boot
  time).  "Guaranteed to work" up to rev. 3, newer DraCo's aren't
  guaranteed to have any CIA (we don't have a driver for the new timer
  yet).

  Supported are:

  - MF-II keyboards on the native interface and A3000 keyboards via
    the CIA.
  - builtin SCSI interface (yet another instance of siop)
  - CIA timer.
  - Zorro II devices which don't do DMA (don't get mapped to Zorro II
    address space in the DraCo)
  - "local bus" devices which are autoconfigured by the boot rom
    (should be all); only an Altais driver is there (looks like a Retina Z3)

  Not yet supported are:

  - native timer of newer machines.
  - Real Time Clock.
  - serial, parallel + floppy on the SuperIO chip (that is also: no mouse)

  XXX You need an enhanced boot loader, which will committed in a few days.

  XXX std.draco should and will go away.

<sys/cpu.h> is no longer needed

Add prototypes for serial and floppy interrupt functions.

Fixed a compile bug which come from the new mouse driver
Fixed a bug with the noreturn attribute of boot and doboot

The prototyp of cpu_coredump is now in sys/signalvar.h
Added an ifdef DEBUG for struct phys_segs