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

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

Switch mvme68k to the common m68k vector table.

Remove duplicated / slightly-tweaked loadustp() (load user segment table)
routines from all of the m68k ports using the shared pmap. Instead, in
pmap_init(), set up a function pointer to the appropriate mmu_load_urp*()
function in mmu_subr.s.

Improve kgdb build for mvme68k:
* include sys/kgdb.h in mvme68k/trap.c for missing definitions.
* cast second kgdb_trap argument to (db_regs_t *).
* build m68k/kgdb_machdep.c in kgdb enable build for kgdb_trap() implementation.

KGDB build still fails, apparently due to missing zs_kgdb.c implementation.

Refactor the 68040 writeback() from each m68k port's trap handler into a
shared copy: m68040_writeback(). It is essentially a copy of the Atari
version, with some minor cosmetic tweaks and one small performance optimization
from the mvme68k port.

Tested by rjs@ on a Quadra 950. (Thanks!)

Remove compat_svr4 and compat_svr4_32, as discussed on tech-kern@ recently,
but also as discussed several times in the past.

branches: 1.62.52; 1.62.54;
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: 1.61.40; 1.61.50;
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: 1.60.30; 1.60.48; 1.60.50; 1.60.56;
merge ktrace-lwp.

branches: 1.59.12;
Use common procfs_machdep.c

Since everyone uses clock_subr.c (or should, if they don't currently),
list it in conf/files instead of in every port's files.*.

branches: 1.57.2;
Defflag PANICBUTTON now that machdep.c includes opt_panicbutton.h.

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

use a merged sys_machdep.c for all the motorola-MMU m68k platforms.

enhance the common m68k db_memrw.c to handle read-only kernel text
and switch all the motorola-MMU m68k platforms to use it.

merge the 12 copies of vm_machdep.c on the m68k platforms.
clean up some other stuff along the way, including:
- use m68k/cacheops.*, remove duplicates from cpu.h.
- centralize a few declarations in (all the copies of) cpu.h.
- define M68K_VAC on platforms which have a VAC.
- switch the sun platforms to the (now common) proc_trampoline().
- do the phys_map thang on the sun platforms too, no reason not to.

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.

branches: 1.51.2;
Build the 68k-specific vmetwo stub (albeit a cut down version), even
if vmetwo isn't in the config file.

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

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

- convert usage of "defopt" to "defflag" where the relevant option does
not support a value (e.g., it's to be used as "options FOO" instead of
"options FOO=xxx"). options that take a value were converted to
defparam recently.
- minor whitespace & formatting cleanups

cleanup:
options SPACE TAB
makeoptions TAB
psuedo-device TAB
remove trailing whitespace
replace multiple spaces -> tabs
options "FOO" -> options FOO
options "FOO=bar" -> options FOO=bar
options "FOO=\"bar\"" -> options FOO="\"bar\""

branches: 1.47.6;
Split the nvram/rtc functionality away from the clock interrupt code
and attach it as `timekeeper0 at mainbus0'.
Use the MI mk48txx nvram/rtc access functions instead of home-grown
versions.

It should now be very easy to add a character device for the benefit
of userland access to NVRAM.

memc attaches at mainbus now.

branches: 1.45.2;
Ditch the `simulated' software interrupt in favour of
hardware-assisted soft interrupts on all boards.
(Note: VMEChip2-less 162/172 not yet tested)

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

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

Add an e_trapsignal member to struct emul, so that emulated processes can
send the appropriate signal depending on the trap type.

Switch to the MI 53c710 driver recently committed by Izumi Tsutsui.

branches: 1.42.2;
Add machdep file for procfs. Currently only used for linux-style
/proc/cpuinfo (only active when procfs is mounted with -o linux).
For ports other than the i386 this currently produces an empty
string.

Include the a.out m68k compatibility module.

Back out the previous change after discussion with thorpej and cgd.

Only try to attach those devices which have been configured
in the kernel config file.

First cut of a driver for the Memory Controller ASICs found
on mvme16x and mvme17x boards.

Use the MI md_root.c.

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

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

Add preliminary support for the MVME162-LX 200/300 series of boards.

Currently, the major onboard devices are supported (disk, network,
rs232 and VMEbus). However, work is still need to support the remaining
devices (eg. IndustryPack sites).

These boards are available with a dazzling array of build options. At
this time, the following options are *required*:

o Real floating point hardware (the 68LC040 model isn't tested),
o The VMEchip2 must be present,
o If offboard VMEbus RAM is not present, at least 8MB of onboard
RAM is required.
o Even if offboard VMEbus RAM *is* present, at least 4MB of onboard
RAM is required. (Boards with 1 or 2MB onboard RAM *can* be
supported with offboard RAM, but not without some funky values in
the VMEbus Master mapping registers.)

There is no support for boards other than those in the -LX 200/300 series.

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

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

branches: 1.32.4;
Rename define 'siop' to 'msiop' to avoid clash with machine-indepndant siop
driver. Doesn't change the name of drivers in config files.

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

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

Add the RAIDframe device major to the machine-dependent config files
so that the right entries get added to dev_name2blk[]. Needed for / on RAID.
(Whoops! I missed checking these in when adding the RAID_AUTOCONFIG stuff.)

branches: 1.29.2; 1.29.10;
Make the sd, cd and md major numbers match reallity.

Normalize include paths.

Only declare block major numbers for devices which can be the root device.

Add COMPAT_SVR4 for m68k.

Normalize path of files.sunos.

branches: 1.24.4;
Forgot to commit this one; added SCSI and VME drivers.

Merge support for mvme167 into main tree.

branches: 1.22.2;
Added COMPAT_LINUX support.

adapt to LANCE driver split

Build pmap_boostrap.o without profiling; we can't call mcount before the
mmu is enabled!

Remove "class" declarations, and add "devclass" declarations where
appropriate. Fix several inconsistencies between device class and
attributes. Mostly from Chris Demetriou.

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.

Update for changes to config.

Merge scsipi branch in the mainline. This add support for ATAPI devices
(currently only CD-ROM drives on i386). The sys/dev/scsipi system provides 2
busses to which devices can attach (scsibus and atapibus). This needed to
change some include files and structure names in the low level scsi drivers.

branches: 1.15.2; 1.15.4;
Remove redundant file directives.

Use our own db_memrw.c

Add m68k/sig_machdep.c

Separate bcopy and copypage stuff from copy.s

"md" is declared in sys/conf/files, now.

rename: ramdisk => md

- new lpt driver, contributed by Steve Woodford <steve@mctavish.demon.co.uk>
- added 1.1 and 1.2 compat to VME147 config file

Remove the only use of `config-dependent', as it isn't actually needed.

add "rd" ram-disk config

Remove duplicate definitions of the "le" device .. "oops"

- sync with new autoconfig code (iio goes away)
- add support for zs1, vme devices (untested)

Contributed by: Jason R. Thorpe <thorpej@og.org>

add wdsc device

New device attachment scheme:

- split softc size and match/attach out from cfdriver into
a new struct cfattach.

- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.

Add m68k/db_memrw.c

branches: 1.1.1;
Initial revision