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

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

s/enqueing/enqueuing/ in debug messages (took a bait from recent Nick's commit)
s/occaision/occasion/ in comment.

extent(9) -> vmem(9)

Move the iomem extent stuff managed by bus_space(9) and make them static.

Inspired by MD bus_space(9) implemantation of arc.
Briefly tested on TT030.

Use and print consistent CPU/MMU/FPU names.

s/hander/handler/ and s/hader/header/ in comments and documentation.

Call cnpollc(9) before cngetc(9) as the cons(9) man page says.

Currently most ports do nothing in cnpollc(9), but this is required to
handle wskbd(9) .set_leds op in cngetc(9) properly, at least on luna68k.

malloc(9) -> kmem(9)

branches: 1.183.2;
uvm_availmem(): give it a boolean argument to specify whether a recent
cached value will do, or if the very latest total must be fetched. It can
be called thousands of times a second and fetching the totals impacts not
only the calling LWP but other CPUs doing unrelated activity in the VM
system.

Rename uvm_free() -> uvm_availmem().

uvmexp.free -> uvm_free()

Remove obsolete stuff.

Fix PR/54325 (use of dangling pointer).

TAB/space cleanup.

branches: 1.177.10; 1.177.20; 1.177.30;
kill sprintf

- remove unused
- use cpu_{g,s}etmodel() (not committed yet)

branches: 1.175.2; 1.175.4;
Appease gcc -fno-common:
- remove physmem from machdep.c since it's initialized in atari_init.c
- declare I/O address space variables properly
Compile test only. (currenty my TT030 is busy on pkgsrc builds)

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

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.

branches: 1.172.2; 1.172.6;
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.

branches: 1.171.2;
- 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.

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.

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: 1.168.2; 1.168.4;
Prepare empty module_init_md() for options MODULAR for all other m68k ports.

Misc KNF.

Misc KNF and cosmetics.

branches: 1.165.2;
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.

branches: 1.164.2;
Change u_long to vaddr_t/vsize_t in exec code where appropriate (mostly
involves setregs and vmcmds). Should result in no code differences.

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

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.

Another needing <sys/exec_aout.h>.

Some KNF.

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.

branches: 1.158.2;
Use pmap_kenter_pa(9) to map msgbufpa as other m68k ports.
Tested on TT030 by David Ross and on Falcon by Tuomo Makinen on port-atari.

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

Use PRIu64 to print 64 bit dev_t (for now).

Raise IPL to splsoftnet() before calling callback functions registered
via (atari specific) add_sicallback(), as a workaround hack.

Many drivers which use the MD sicallback depend on BASEPRI() macro
defined in <machine/cpu.h> to check nested interrupts,
but functions invoked from MI softint(9) won't run at IPL_SOFT
any longer and the BASEPRI() macro doesn't return expected value
as the past.

Fixes lost interrupt problem on Falcon wdc(4) reported by
Tuomo Makinen on port-atari, and also confirmed by him.

Should be pulled up to netbsd-5.

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@.

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: 1.150.2; 1.150.4; 1.150.6;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.149.6; 1.149.10; 1.149.12; 1.149.14;
Convert Atari to generic TODR and timecounter.

ANSIfy.

branches: 1.147.6;
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: 1.146.2;
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: 1.145.8; 1.145.10;
curlwp can't be NULL so no need to check it.

branches: 1.144.4;
Apply MI softintr(9) patch before it becomes rotten. Untested.
See also:
http://mail-index.netbsd.org/port-atari/2007/03/07/0000.html

branches: 1.143.2; 1.143.4; 1.143.6;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

TRUE -> true, FALSE -> false

branches: 1.141.2;
Merge newlock2 to 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.

branches: 1.139.20; 1.139.22;
bare asm -> __asm

merge ktrace-lwp.

branches: 1.137.2;
Adapt to compiling with -Wshadow and -Wcast-qual, by adding const
qualification in places and renaming a few local variables.
Also adds a couple uses of __UNVOLATILE() to allow passing volatile
variables to functions wanting e.g. caddr_t.

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.

remove uvm_map_protect from cpu_startup of several ports.
- they shouldn't be needed with the current fault handler.
- they causes assertion failure with the recent vm_map implementation.

discussed on tech-kern@. reviewed by Chuck Silvers.
PR/29179 from Julio M. Merino Vidal.

branches: 1.134.8; 1.134.10;
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.

__KERNEL_RCSID()

branches: 1.127.2;
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.

Back out the following chagne:
http://mail-index.netbsd.org/source-changes/2003/05/08/0068.html

There were some side-effects that I didn't anticipate, and fixing them
is proving to be more difficult than I thought, do just eject for now.
Maybe one day we can look at this again.

Fixes PR kern/21517.

Simplify the way the bounds of the managed kernel virtual address
space is advertised to UVM by making virtual_avail and virtual_end
first-class exported variables by UVM. Machine-dependent code is
responsible for initializing them before main() is called. Anything
that steals KVA must adjust these variables accordingly.

This reduces the number of instances of this info from 3 to 1, and
simplifies the pmap(9) interface by removing the pmap_virtual_space()
function call, and removing two arguments from pmap_steal_memory().

This also eliminates some kludges such as having to burn kernel_map
entries on space used by the kernel and stolen KVA.

This also eliminates use of VM_{MIN,MAX}_KERNEL_ADDRESS from MI code,
this giving MD code greater flexibility over the bounds of the managed
kernel virtual address space if a given port's specific platforms can
vary in this regard (this is especially true of the evb* ports).

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.

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

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

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.

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

branches: 1.115.2;
Pull in prototype for setregs()

kill remaining PS_STRINGS instances.

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.

branches: 1.112.4;
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: 1.111.2;
use pmap_k* for buffer cache pages.

branches: 1.110.2;
replace vm_map{,_entry}_t with struct vm_map{,_entry} *.

Add an NMI handler for the Milan.

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.

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>

branches: 1.106.2;
Prepare assembly parts for an eventual transition to ELF. Mostly from a
diff from Steve Woodford.

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

Expand identify_cpu() for the Milan.

Update the printf format in straymfpint() too.

Fixes for straytrap():
- make it clear that we are printing hex-numbers
- fix the loop protection.

Move config_console() out of the grf-layer. This allows for more than just
grf-type consoles (wscons). Config_console() is now called from consinit(),
just after setting up the kernel msgbuf, so debugging is easy(er).
To further facilitate this move, the pcibus now allows for early-console
attaches by allocating static bus_space_tags (no mallocs possible at this
point).

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.

undef PS after inclusion of net/netisr.h to avoid conflict w/ machine/reg.h

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.

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)

branches: 1.94.2;
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.

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.

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

check whether tv_usec >= 1000000

CL* discarding.

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

Use extent maps.

branches: 1.86.2; 1.86.4; 1.86.6;
Do the mesgbuf initialisation a bit earlier in the boot process. This
makes debugging the console somewhat easier.

- 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.

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.

Make this compile again. I assumed that the use of 'format_memory()' was
an error? Made it use format_bytes()....

* 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.

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.

branches: 1.79.2;
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'.

Implement BUFCACHE option as suggested by lukem.

Make compile with -DDEBUG

Pull-in device.h for configure() prototype.

Defopt SYSVMSG, SYSVSEM and SYSVSHM.

Get rid of vm_offset_t/vm_size_t

Add CCITT & NATM interrupt handlers. (Jonathan Stone).

* 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.

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.

Add UVM option.

Implement MACHINE_NEW_NONCONTIG. Implementation is based on Ignatios' amiga
implementation and Chuck's conversion description.

Move the bus_* functions from machdep.c to bus.c .

Bus-dma implementation for the atari. Heavily based on the i386
implementation.

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

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

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.

Make this compile again by including <vm/vm.h> and moving sysctl.h below
that include.

branches: 1.54.2;
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.

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

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.)

branches: 1.50.2;
Implement bus_space_subregion()

bring mrg-vm-swap2 onto mainilne.

s/atari_round_page/m68k_round_page/ s/atari_trunc_page/m68k_trunc_page/

Initialize machine from MACHINE.

branches: 1.46.2;
Garbage-collect regdump() and friends.

Calculate dumpsize correctly (in pages).

Add netatalk netisr

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

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

Use m68k/sig_machdep.c

Add missing 'break'.

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.

Push out some 060 support. It's all untested and mostly copied in from the
amiga-port.

branches: 1.37.2; 1.37.4;
Use bus_space_tag when calculating the physical address.

Add a 'size' argument to badbaddr(). This is very useful on busses that
only accept certain size accesses on a specific address range. Like the
VME bus.

branches: 1.35.2;
Remove some code accidently checked in on previous commit.

Adapt to changes in the bus-interface; bus_[mem|io] -> bus_space. Thanks Jason.

Add bus_mem_(un)map functions.

db_memrw.c:
- Sync with hp300 version.

Machdep.c:
- Notify the vm-system that kernel-text is read/execute
- Notify the vm-system that page zero isn't mapped

[ Grrr.. How do you cancel a check-in when you find out too late they
should have different comments ]

backout previous kprintf changes

printf -> kprintf, sprintf -> ksprintf

Catchup with -current:
- Extra argument to boot()
- select -> poll

Recognize the Hades as a valid machine type.

- Make it compile & work for the 68040
- Map the various I/O areas just below Sysmap
- Cleanup a bit
- Fix machine-type detection to recognize the Hades.

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 *.

Sync with atari_init cleanup

Remove references to kern_extern.h

branches: 1.23.4;
Corrections for removed <sys/cpu.h> and some more prototypes.

Yet more prototyping and -Wall fixes.

Allow call-back functions to drop to spl0().

Add the include files and the atari kernel support for new format panic
dumps.

First bunch of changes due to stricter prototype checking.

Changed name of sigaltstack's ss_base field to ss_sp to match XPG4.2 and
traditional usage.

Add doshutdownhooks

Prefix names of system call implementation functions with `sys_'.

Make system calls conform to a standard prototype and bring those
prototypes into scope.

SA_ONSTACK --> SS_ONSTACK

Fix typo in previous commit

Detect type and precence of an FPU in the kernel instead of relying on GEM.

Add pppintr() to netintr().

Dumping works, now if there were tools to handle it...

Remove FPCOPROC use fputype instead.

Set A2 to PS_STRINGS.

- Remove double mapping of stack
- Change to new coredump format

Print proper machine type at startup. Use 'vfs_shutdown' to sync the
disks.

Report "real mem" correctly and make one single module for handling
software interrupts.

Removed cpuspeed

- added sunos_machdep.c for sun3, atari, amiga and mac68k.
- changed machdep.c and trap.c to use struct emul.
- remove ep_setup references.
- added struct emul to all emulations.

kernel_pmap --> pmap_kernel()

branches: 1.1.1;
Initial revision

s/enqueing/enqueuing/ in debug messages (took a bait from recent Nick's commit)
s/occaision/occasion/ in comment.

extent(9) -> vmem(9)

Move the iomem extent stuff managed by bus_space(9) and make them static.

Inspired by MD bus_space(9) implemantation of arc.
Briefly tested on TT030.

Use and print consistent CPU/MMU/FPU names.

s/hander/handler/ and s/hader/header/ in comments and documentation.

Call cnpollc(9) before cngetc(9) as the cons(9) man page says.

Currently most ports do nothing in cnpollc(9), but this is required to
handle wskbd(9) .set_leds op in cngetc(9) properly, at least on luna68k.

malloc(9) -> kmem(9)

branches: 1.183.2;
uvm_availmem(): give it a boolean argument to specify whether a recent
cached value will do, or if the very latest total must be fetched. It can
be called thousands of times a second and fetching the totals impacts not
only the calling LWP but other CPUs doing unrelated activity in the VM
system.

Rename uvm_free() -> uvm_availmem().

uvmexp.free -> uvm_free()

Remove obsolete stuff.

Fix PR/54325 (use of dangling pointer).

TAB/space cleanup.

branches: 1.177.10; 1.177.20; 1.177.30;
kill sprintf

- remove unused
- use cpu_{g,s}etmodel() (not committed yet)

branches: 1.175.2; 1.175.4;
Appease gcc -fno-common:
- remove physmem from machdep.c since it's initialized in atari_init.c
- declare I/O address space variables properly
Compile test only. (currenty my TT030 is busy on pkgsrc builds)

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

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.

branches: 1.172.2; 1.172.6;
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.

branches: 1.171.2;
- 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.

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.

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: 1.168.2; 1.168.4;
Prepare empty module_init_md() for options MODULAR for all other m68k ports.

Misc KNF.

Misc KNF and cosmetics.

branches: 1.165.2;
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.

branches: 1.164.2;
Change u_long to vaddr_t/vsize_t in exec code where appropriate (mostly
involves setregs and vmcmds). Should result in no code differences.

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

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.

Another needing <sys/exec_aout.h>.

Some KNF.

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.

branches: 1.158.2;
Use pmap_kenter_pa(9) to map msgbufpa as other m68k ports.
Tested on TT030 by David Ross and on Falcon by Tuomo Makinen on port-atari.

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

Use PRIu64 to print 64 bit dev_t (for now).

Raise IPL to splsoftnet() before calling callback functions registered
via (atari specific) add_sicallback(), as a workaround hack.

Many drivers which use the MD sicallback depend on BASEPRI() macro
defined in <machine/cpu.h> to check nested interrupts,
but functions invoked from MI softint(9) won't run at IPL_SOFT
any longer and the BASEPRI() macro doesn't return expected value
as the past.

Fixes lost interrupt problem on Falcon wdc(4) reported by
Tuomo Makinen on port-atari, and also confirmed by him.

Should be pulled up to netbsd-5.

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@.

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: 1.150.2; 1.150.4; 1.150.6;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.149.6; 1.149.10; 1.149.12; 1.149.14;
Convert Atari to generic TODR and timecounter.

ANSIfy.

branches: 1.147.6;
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: 1.146.2;
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: 1.145.8; 1.145.10;
curlwp can't be NULL so no need to check it.

branches: 1.144.4;
Apply MI softintr(9) patch before it becomes rotten. Untested.
See also:
http://mail-index.netbsd.org/port-atari/2007/03/07/0000.html

branches: 1.143.2; 1.143.4; 1.143.6;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

TRUE -> true, FALSE -> false

branches: 1.141.2;
Merge newlock2 to 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.

branches: 1.139.20; 1.139.22;
bare asm -> __asm

merge ktrace-lwp.

branches: 1.137.2;
Adapt to compiling with -Wshadow and -Wcast-qual, by adding const
qualification in places and renaming a few local variables.
Also adds a couple uses of __UNVOLATILE() to allow passing volatile
variables to functions wanting e.g. caddr_t.

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.

remove uvm_map_protect from cpu_startup of several ports.
- they shouldn't be needed with the current fault handler.
- they causes assertion failure with the recent vm_map implementation.

discussed on tech-kern@. reviewed by Chuck Silvers.
PR/29179 from Julio M. Merino Vidal.

branches: 1.134.8; 1.134.10;
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.

__KERNEL_RCSID()

branches: 1.127.2;
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.

Back out the following chagne:
http://mail-index.netbsd.org/source-changes/2003/05/08/0068.html

There were some side-effects that I didn't anticipate, and fixing them
is proving to be more difficult than I thought, do just eject for now.
Maybe one day we can look at this again.

Fixes PR kern/21517.

Simplify the way the bounds of the managed kernel virtual address
space is advertised to UVM by making virtual_avail and virtual_end
first-class exported variables by UVM. Machine-dependent code is
responsible for initializing them before main() is called. Anything
that steals KVA must adjust these variables accordingly.

This reduces the number of instances of this info from 3 to 1, and
simplifies the pmap(9) interface by removing the pmap_virtual_space()
function call, and removing two arguments from pmap_steal_memory().

This also eliminates some kludges such as having to burn kernel_map
entries on space used by the kernel and stolen KVA.

This also eliminates use of VM_{MIN,MAX}_KERNEL_ADDRESS from MI code,
this giving MD code greater flexibility over the bounds of the managed
kernel virtual address space if a given port's specific platforms can
vary in this regard (this is especially true of the evb* ports).

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.

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

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

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.

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

branches: 1.115.2;
Pull in prototype for setregs()

kill remaining PS_STRINGS instances.

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.

branches: 1.112.4;
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: 1.111.2;
use pmap_k* for buffer cache pages.

branches: 1.110.2;
replace vm_map{,_entry}_t with struct vm_map{,_entry} *.

Add an NMI handler for the Milan.

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.

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>

branches: 1.106.2;
Prepare assembly parts for an eventual transition to ELF. Mostly from a
diff from Steve Woodford.

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

Expand identify_cpu() for the Milan.

Update the printf format in straymfpint() too.

Fixes for straytrap():
- make it clear that we are printing hex-numbers
- fix the loop protection.

Move config_console() out of the grf-layer. This allows for more than just
grf-type consoles (wscons). Config_console() is now called from consinit(),
just after setting up the kernel msgbuf, so debugging is easy(er).
To further facilitate this move, the pcibus now allows for early-console
attaches by allocating static bus_space_tags (no mallocs possible at this
point).

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.

undef PS after inclusion of net/netisr.h to avoid conflict w/ machine/reg.h

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.

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)

branches: 1.94.2;
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.

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.

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

check whether tv_usec >= 1000000

CL* discarding.

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

Use extent maps.

branches: 1.86.2; 1.86.4; 1.86.6;
Do the mesgbuf initialisation a bit earlier in the boot process. This
makes debugging the console somewhat easier.

- 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.

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.

Make this compile again. I assumed that the use of 'format_memory()' was
an error? Made it use format_bytes()....

* 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.

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.

branches: 1.79.2;
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'.

Implement BUFCACHE option as suggested by lukem.

Make compile with -DDEBUG

Pull-in device.h for configure() prototype.

Defopt SYSVMSG, SYSVSEM and SYSVSHM.

Get rid of vm_offset_t/vm_size_t

Add CCITT & NATM interrupt handlers. (Jonathan Stone).

* 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.

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.

Add UVM option.

Implement MACHINE_NEW_NONCONTIG. Implementation is based on Ignatios' amiga
implementation and Chuck's conversion description.

Move the bus_* functions from machdep.c to bus.c .

Bus-dma implementation for the atari. Heavily based on the i386
implementation.

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

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

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.

Make this compile again by including <vm/vm.h> and moving sysctl.h below
that include.

branches: 1.54.2;
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.

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

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.)

branches: 1.50.2;
Implement bus_space_subregion()

bring mrg-vm-swap2 onto mainilne.

s/atari_round_page/m68k_round_page/ s/atari_trunc_page/m68k_trunc_page/

Initialize machine from MACHINE.

branches: 1.46.2;
Garbage-collect regdump() and friends.

Calculate dumpsize correctly (in pages).

Add netatalk netisr

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

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

Use m68k/sig_machdep.c

Add missing 'break'.

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.

Push out some 060 support. It's all untested and mostly copied in from the
amiga-port.

branches: 1.37.2; 1.37.4;
Use bus_space_tag when calculating the physical address.

Add a 'size' argument to badbaddr(). This is very useful on busses that
only accept certain size accesses on a specific address range. Like the
VME bus.

branches: 1.35.2;
Remove some code accidently checked in on previous commit.

Adapt to changes in the bus-interface; bus_[mem|io] -> bus_space. Thanks Jason.

Add bus_mem_(un)map functions.

db_memrw.c:
- Sync with hp300 version.

Machdep.c:
- Notify the vm-system that kernel-text is read/execute
- Notify the vm-system that page zero isn't mapped

[ Grrr.. How do you cancel a check-in when you find out too late they
should have different comments ]

backout previous kprintf changes

printf -> kprintf, sprintf -> ksprintf

Catchup with -current:
- Extra argument to boot()
- select -> poll

Recognize the Hades as a valid machine type.

- Make it compile & work for the 68040
- Map the various I/O areas just below Sysmap
- Cleanup a bit
- Fix machine-type detection to recognize the Hades.

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 *.

Sync with atari_init cleanup

Remove references to kern_extern.h

branches: 1.23.4;
Corrections for removed <sys/cpu.h> and some more prototypes.

Yet more prototyping and -Wall fixes.

Allow call-back functions to drop to spl0().

Add the include files and the atari kernel support for new format panic
dumps.

First bunch of changes due to stricter prototype checking.

Changed name of sigaltstack's ss_base field to ss_sp to match XPG4.2 and
traditional usage.

Add doshutdownhooks

Prefix names of system call implementation functions with `sys_'.

Make system calls conform to a standard prototype and bring those
prototypes into scope.

SA_ONSTACK --> SS_ONSTACK

Fix typo in previous commit

Detect type and precence of an FPU in the kernel instead of relying on GEM.

Add pppintr() to netintr().

Dumping works, now if there were tools to handle it...

Remove FPCOPROC use fputype instead.

Set A2 to PS_STRINGS.

- Remove double mapping of stack
- Change to new coredump format

Print proper machine type at startup. Use 'vfs_shutdown' to sync the
disks.

Report "real mem" correctly and make one single module for handling
software interrupts.

Removed cpuspeed

- added sunos_machdep.c for sun3, atari, amiga and mac68k.
- changed machdep.c and trap.c to use struct emul.
- remove ep_setup references.
- added struct emul to all emulations.

kernel_pmap --> pmap_kernel()

branches: 1.1.1;
Initial revision

extent(9) -> vmem(9)

Move the iomem extent stuff managed by bus_space(9) and make them static.

Inspired by MD bus_space(9) implemantation of arc.
Briefly tested on TT030.

Use and print consistent CPU/MMU/FPU names.

s/hander/handler/ and s/hader/header/ in comments and documentation.

Call cnpollc(9) before cngetc(9) as the cons(9) man page says.

Currently most ports do nothing in cnpollc(9), but this is required to
handle wskbd(9) .set_leds op in cngetc(9) properly, at least on luna68k.

malloc(9) -> kmem(9)

branches: 1.183.2;
uvm_availmem(): give it a boolean argument to specify whether a recent
cached value will do, or if the very latest total must be fetched. It can
be called thousands of times a second and fetching the totals impacts not
only the calling LWP but other CPUs doing unrelated activity in the VM
system.

Rename uvm_free() -> uvm_availmem().

uvmexp.free -> uvm_free()

Remove obsolete stuff.

Fix PR/54325 (use of dangling pointer).

TAB/space cleanup.

branches: 1.177.10; 1.177.20; 1.177.30;
kill sprintf

- remove unused
- use cpu_{g,s}etmodel() (not committed yet)

branches: 1.175.2; 1.175.4;
Appease gcc -fno-common:
- remove physmem from machdep.c since it's initialized in atari_init.c
- declare I/O address space variables properly
Compile test only. (currenty my TT030 is busy on pkgsrc builds)

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

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.

branches: 1.172.2; 1.172.6;
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.

branches: 1.171.2;
- 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.

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.

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: 1.168.2; 1.168.4;
Prepare empty module_init_md() for options MODULAR for all other m68k ports.

Misc KNF.

Misc KNF and cosmetics.

branches: 1.165.2;
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.

branches: 1.164.2;
Change u_long to vaddr_t/vsize_t in exec code where appropriate (mostly
involves setregs and vmcmds). Should result in no code differences.

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

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.

Another needing <sys/exec_aout.h>.

Some KNF.

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.

branches: 1.158.2;
Use pmap_kenter_pa(9) to map msgbufpa as other m68k ports.
Tested on TT030 by David Ross and on Falcon by Tuomo Makinen on port-atari.

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

Use PRIu64 to print 64 bit dev_t (for now).

Raise IPL to splsoftnet() before calling callback functions registered
via (atari specific) add_sicallback(), as a workaround hack.

Many drivers which use the MD sicallback depend on BASEPRI() macro
defined in <machine/cpu.h> to check nested interrupts,
but functions invoked from MI softint(9) won't run at IPL_SOFT
any longer and the BASEPRI() macro doesn't return expected value
as the past.

Fixes lost interrupt problem on Falcon wdc(4) reported by
Tuomo Makinen on port-atari, and also confirmed by him.

Should be pulled up to netbsd-5.

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@.

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: 1.150.2; 1.150.4; 1.150.6;
Replce exec_map with a pool. Proposed on tech-kern@, reviewed by chs@.

branches: 1.149.6; 1.149.10; 1.149.12; 1.149.14;
Convert Atari to generic TODR and timecounter.