Apple Sound Chip audio support for 68k Macintoshoes.

This provies a sound device and support for wsbell(4).

Manual page to be added in a followup commit.

As posted to port-mac68k.

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.

Add MAC68K_MEMSIZE option to hard-code memory size in MB, instead of
that given by Booter. Work around Booter bug by which max memory is
restricted to 255MB.

branches: 1.130.8;
G/C obsoleted

branches: 1.129.2;
Add genfb(4) driver for mac68k grfbus.
1, 2, 4, 8, 15, and 32 color-depths are supported.

ANSI colors on console are functional for depth >= 4.

Graphic applications based on wsfb API should work, provided
they can correctly handle fbi_fboffset and your color depth.

wsfb driver of Xorg 1.20 and mlterm-fb (framebuffer version of
x11/mlterm) work fine for depth == 1 || depth >= 8.

For depth == 8 (256 colors), graphic applications require
colormap callback, which is currently supported for some
internal graphic adapters, and only Civic (found on Quadra
AV series) was tested. Register definition and its usage are
taken from Linux. You can easily support other adapters if
Linux supports that.

Have fun, and any problem reports are welcomed!

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: 1.126.2; 1.126.4;
add a special rule to build m68k/fpu.c to avoid passing -msoft-float.
fixes GCC 6 kernel builds that use this file.

Merge copy-and-pasted fpu_probe() function (to share it among more m68k ports).
Tested on TT030, Sun3/80, and X68030.

branches: 1.124.2;
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: 1.123.6;
defflag GRF_COMPAT.

branches: 1.122.18; 1.122.20;
Added driver for the Creative Systems Inc. Hurdler CPI parallel printer card.
Timecounter support for the Z8536 counters A + B is not complete, yet.

Reviewed by Martin Husemann.

branches: 1.121.6; 1.121.8; 1.121.10; 1.121.12;
Since files.wscons et al. are included by ~all ports anyway, include
them in the mi "files" file, and remove include statements from md files.
These shouldn't pull in additional kernel code when not in use, so it
shouldn't do any harm except a risk of namespace collisions which
should be easy to fix.

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: 1.119.2;
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: 1.118.8; 1.118.10;
Switch mac68k's sn(4) Ethernet to MI SONIC driver.

Tested with Apple Ethernet CS Twisted-Pare Card on LC630 by me
and Quadra 650 on-board Ethernet by hauke@.
NuBus based cards and PowerBook variants are still untested.

Rather than attaching fpu as a usual device during cpu_configure(9),
initialize it explicitly in identifycpu() (before cpu_configure(9))
because after yamt-idlelwp merge savectx() is called before
cpu_configure(9) and it requires fputype initialized properly,
otherwise a kernel fails in savectx() if a machine doesn't have an FPU.

branches: 1.116.2; 1.116.4; 1.116.10;
MI softintr(9)'fy.
Probably problematic, but LC630 is running at single user.

branches: 1.115.26;
merge ktrace-lwp.

branches: 1.114.8;
only one of the obio locators was actually used, so get rid of the others
and collapse the two variations of obio into one. use the remaining locator
("addr") to differentiate the two possible esp and sbc devices (instead of
using the unit number).

branches: 1.113.4;
use the common procfs_machdep.c

branches: 1.112.6;
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.

merge all the m68k copies of kgdb_machdep.c.

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.

netdock* - ethernet driver for Asante NetDock/Newer Ether MicroDock.
by Daishi Kato <daishi@axlight.com>
test/stabilization by Takeo Kuwata <tkuwata@virus.kyoto-u.ac.jp>

branches: 1.105.2;
Add IDE drive support.

Note:
(1) Character device major number chages to 49 from 48(in my original
code). So it is necessary to rebuild device files.
(2) Must use Booter 2.0.0a10 or later.
(3) Default mode is cpu busy wait. It is defined by flags 0x1000.
It will be more slow than before.
No flags means hardware interrupt mode. But it might be able to
get no interrupts.

Support machines:
(1) Quadra 630 series
(2) PowerBook 150

Non tested machine:
(1) PowerBook 190 series

Approved by: briggs

* Move the mii_bitbang attribute into dev/mii/files.mii
* Pull in dev/mii/files.mii from conf/files, rather than playing
the magic "files include order" dance in N machine-dependent
configuration definitions.

Use m68k/m68k/cacheops.[ch]
Use m68k/m68k/bus_dma.c
- Add mainbus_attach_args with bus_space_tag_t and bus_dma_tag_t.
- Use passed-in tags for nubus scan.

Switch to MI dev/md_root.c for archs which don't have any special
memory disk hooks (i.e. everything except atari).

- 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\""

include COMPAT_AOUT_M68K stuff.

branches: 1.98.2; 1.98.8;
Add an e_trapsignal member to struct emul, so that emulated processes can
send the appropriate signal depending on the trap type.

branches: 1.97.2;
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.

Add nubus attachment for smc91cxx driver.

branches: 1.95.4;
The declaration for esp has moved to conf/files. (Hi Charles!)

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.)

Merge wscons work onto the main development branch.

branches: 1.92.2;
- 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.

Unfortunately, several changes that are intermingled:
- Add initial IOP support. ADB doesn't work yet for me, but it's here so
that others will be encouraged to work on it. ADB_HW_IOP basically
is configured as a NOP so that serial consoles will continue to work.
- Roll via1_intr and via2_intr into the intr.c scheme--this also required
changing rtclock_intr to grovel the stack differently so that hardclock
gets the right arguments and softclock() doesn't get all reentrant.
- Make via1 interrupts parallel to via2 interrupts--handlers get a pass-
through pointer and we can register handlers. Register via1 interrupt
with intr_establish()--normally level 1, level 6 for A/UX scheme.
- Use intr_establish() to set real via2 interrupt handler instead of the
hacked function pointer.
- Reorganize adb-direct interrupts so that a function call is removed.
- Implement A/UX interrupts for all Quadras right now. We may need to
special case some Quadras, but Linux folks are reporting success on
several models.
- Fix intrnames to be accurate for the normal, PSC, and A/UX interrupt
configurations.

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

Add COMPAT_SVR4 for m68k.

branches: 1.88.2; 1.88.6; 1.88.8;
Add support for the IWM driver.

Added COMPAT_LINUX support.

New ADB "bus" interface:
o Separate ms and kbd drivers
o aed device for compatibility
o debug message cleanup in hardware direct support (from scottr)

Defopt ALTXBUTTONS, DISABLE_EXT_CACHE, and ZS_CONSOLE_ABORT.

New framework for handling processor interrupts, derived in part from
the hp300 port.

- Interrupts 3-6 use this immediately. Interrupt 7 is a special case,
and the VIA interrupts (1 and 2) will be addressed when that code is
rototilled.

- Modify the zs front end to register with the appropriate interrupt
controller: through the PSC on the AV Quadras, and direct to
interrupt 4 on the rest. Arrange to have the appropriate zsc_softc
supplied to us at interrupt time.

- Modify the direct ADB driver (and its PowerManager cousin) to call
intr_dispatch(), rather than zshard(). XXX This is a kludge, but at
least limits the brokenness to the ADB drivers, now.

As a side effect, this should fix PR 5590. Thanks to Bill Studenmund for
correctly determining the cause of the problem reported there.

Add a GRF_COMPAT option so that old-style grf ioctl() code can be
removed from the kernel.

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

Move on-board I/O and NuBus drivers to their own directories
via repository copy, and make the necessary adjustments to reflect
the moved files.

Pull in a few more kgdb-related bits. Getting there...

Add the newly created bus_space.c so it gets compiled.

Unify ADB options and place them all into opt_adb.h. Provide a knob to
enable ADB debugging messages if ADB_DEBUG is configured.

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.

Add in the if_mc ethernet driver for the AMD "MACE" part. This is the
internal ethernet on the Quadra/Centris 660av/840av.
Add initial support for the PSC (DMA controller) to support the above
(DMA SCSI remains unsupported). This involved also changing the way
that several interrupts are handled.
Above from David Huang <khym@bga.com>
Since the interrupts changed somewhat, we must also make the ipls
dynamic, defaulting to their prior levels and adjusted for the AVs.
I modelled this on the hp300.

branches: 1.73.2;
Convert to MI 8530 SCC driver, from Bill Studenmund. The new front end
also supports DTR/CTS flow control.

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: 1.71.2; 1.71.4;
Use the new 8390 driver back end.

Direct config to create an MRG_ADB option header.

Use common m68k sig_machdep.c, removing our local copies of these.

Remove redundant file directives.

Make new ADB driver the default.

Clean up after arp conversion; from Erik Bertelsen, closes PR 3372.

Separate bcopy and copypage stuff from copy.s

Add SONIC driver. Works on my Q700. Untested elsewhere.

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.

Undo some damage that CVS somehow let me get away with.

Adapt to sbc driver/attachment split

Add ncr53c9x flag to esp.

Update to reflect ae driver/attachment code split

Split the obio interface into two forms: optional address only for most
devices (obio_norm) or optional address, HSK, and DMA for 5380-based SCSI
controllers (obio_scsi5380). Update all obio-attached drivers
appropriately.

Also, attach fpu to mainbus, rather than obio.

Add an addr locator to obio.

Add needs-flag to asc driver

branches: 1.55.2;
"md" is declared in sys/conf/files, now.

Minor formatting cleanup, and remove an old comment

branches: 1.53.2;
rename: ramdisk => md

ncr96scsi -> esp for consistency with sparc and alpha.

Update for recent config(8) changes.

Attach ite semantics to the appropriate grf device, instead of obio.

Completely revamp setroot() and friends. Since Chris' version of this code
is close to how I reworked it, I pulled in the (essentially MI) NetBSD/alpha
and added the appropriate support around it.

- No need for the GENERIC kernel config option.
- NFS-mounted root and swap are supported.
- If we can't figure out where the root filesystem is from what the Booter
tells us, ask the user.
- Split the mainbus autoconfig code to a separate file.

Also, update/add copyrights as appropriate.

Update for new grf attachment code.

Serial driver with interface to a slightly modified version of the machine-
independent z8530 driver. When that driver is updated, the local copy
of those files may be removed. From Bill Studenmund.
Compiler warnings fixed by me.

Update for renamed sbc driver files

Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.

Remove trash left from a merge (probably really my fault).

shuffle some and change rd to pseudo-device.

Renamed the sbc driver files

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

Add sbc driver.

Don't special-case conf.c.

RAMDISK stuff.

include files.fpe instead of just fpu_emulate.c--to get the new fpe code.

Make the new m.i. scsi driver the default.

add needs-flag for the scsi chip interfaces.

Add pmap_bootstrap.c and take out mac68k_init.c.

Add new nubus handling that's much more robust.
Update via, if_ae, and grf accordingly.
Revamp grf.

Use new files.sunos

Move sunos_machdep.c to m68k

- 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.

Get rid of old file from hp300 origins!?

include mi scsi files file.
Change several devices from needs-count to needs-flag.

Reference cninit.c as well as cons.c

Nuke FPCOPROC and add FPU_EMULATE to GENERIC.
Support the above with gwr's sun3 stuff.

Use M68030 and M68040 instead of MC... Thanks to Luke Mewburn for
pointing out this inconsistency.

Update to add pramasm.s.

Add major for vnd.

add 'maxpartitions' keyword as first 'intesting' thing in the file, to
facilitate the solution of config.new's hardcoded partition number
problems.

sunos_sysent.c -> sunos_init_sysent.c and add a few tabs for
readability.

Mac ROM Glue changes from grantham@tenon.com.

compat/sunos/sun_* -> compat/sunos/sunos_*

Attempt to use sys/scsi.

new RCS ID format.

Give vnd a major number. Didn't work on my last attempt with it, but
this will be needed, anyway.

Add asc as a device. Format a tad.

Rearrange to alphabetize some. Nuke old console, add new console and
ADB code from Lawrence and Brad.

branches: 1.12.2;
Erf. Forgot to put mac68k_init.c in alphabetically.

Add mac68k_init.c and scsi96.c for 68040 macs and configure them. Not
much uses them, yet, but also added the MC68030 and MC68040 options.

Checkpoint. GENERIC has some things disabled. Makefile updated for
vnode_if and some cleanup. copy.s added to files.

Add files for compat_sunos. Shouldn't these be in sys/conf/files.newconf?

Add fpu.c and alphabetize a bunch.

Fix for magnum's scsi system, but referenced through arch/mac68k/scsi
as was the old stuff.

Make uk and su look like devices. Haven't tried compiling uk. su is still
nothing.

Makefile: Added -T 0 to link for kernel.
files.mac68k.newconf: Removed ddb entries.

kill entries duplicated in files.m68k.newconf

Add Apple Ethernet to GENERIC and files. Also add asc.c to files
for sound support.

Let's try DDB...

Migrate to new MACHINE definition (mac -> mac68k).

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.

Add MAC68K_MEMSIZE option to hard-code memory size in MB, instead of
that given by Booter. Work around Booter bug by which max memory is
restricted to 255MB.

branches: 1.130.8;
G/C obsoleted

branches: 1.129.2;
Add genfb(4) driver for mac68k grfbus.
1, 2, 4, 8, 15, and 32 color-depths are supported.

ANSI colors on console are functional for depth >= 4.

Graphic applications based on wsfb API should work, provided
they can correctly handle fbi_fboffset and your color depth.

wsfb driver of Xorg 1.20 and mlterm-fb (framebuffer version of
x11/mlterm) work fine for depth == 1 || depth >= 8.

For depth == 8 (256 colors), graphic applications require
colormap callback, which is currently supported for some
internal graphic adapters, and only Civic (found on Quadra
AV series) was tested. Register definition and its usage are
taken from Linux. You can easily support other adapters if
Linux supports that.

Have fun, and any problem reports are welcomed!

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: 1.126.2; 1.126.4;
add a special rule to build m68k/fpu.c to avoid passing -msoft-float.
fixes GCC 6 kernel builds that use this file.

Merge copy-and-pasted fpu_probe() function (to share it among more m68k ports).
Tested on TT030, Sun3/80, and X68030.

branches: 1.124.2;
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: 1.123.6;
defflag GRF_COMPAT.

branches: 1.122.18; 1.122.20;
Added driver for the Creative Systems Inc. Hurdler CPI parallel printer card.
Timecounter support for the Z8536 counters A + B is not complete, yet.

Reviewed by Martin Husemann.

branches: 1.121.6; 1.121.8; 1.121.10; 1.121.12;
Since files.wscons et al. are included by ~all ports anyway, include
them in the mi "files" file, and remove include statements from md files.
These shouldn't pull in additional kernel code when not in use, so it
shouldn't do any harm except a risk of namespace collisions which
should be easy to fix.

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: 1.119.2;
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: 1.118.8; 1.118.10;
Switch mac68k's sn(4) Ethernet to MI SONIC driver.

Tested with Apple Ethernet CS Twisted-Pare Card on LC630 by me
and Quadra 650 on-board Ethernet by hauke@.
NuBus based cards and PowerBook variants are still untested.

Rather than attaching fpu as a usual device during cpu_configure(9),
initialize it explicitly in identifycpu() (before cpu_configure(9))
because after yamt-idlelwp merge savectx() is called before
cpu_configure(9) and it requires fputype initialized properly,
otherwise a kernel fails in savectx() if a machine doesn't have an FPU.

branches: 1.116.2; 1.116.4; 1.116.10;
MI softintr(9)'fy.
Probably problematic, but LC630 is running at single user.

branches: 1.115.26;
merge ktrace-lwp.

branches: 1.114.8;
only one of the obio locators was actually used, so get rid of the others
and collapse the two variations of obio into one. use the remaining locator
("addr") to differentiate the two possible esp and sbc devices (instead of
using the unit number).

branches: 1.113.4;
use the common procfs_machdep.c

branches: 1.112.6;
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.

merge all the m68k copies of kgdb_machdep.c.

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.

netdock* - ethernet driver for Asante NetDock/Newer Ether MicroDock.
by Daishi Kato <daishi@axlight.com>
test/stabilization by Takeo Kuwata <tkuwata@virus.kyoto-u.ac.jp>

branches: 1.105.2;
Add IDE drive support.

Note:
(1) Character device major number chages to 49 from 48(in my original
code). So it is necessary to rebuild device files.
(2) Must use Booter 2.0.0a10 or later.
(3) Default mode is cpu busy wait. It is defined by flags 0x1000.
It will be more slow than before.
No flags means hardware interrupt mode. But it might be able to
get no interrupts.

Support machines:
(1) Quadra 630 series
(2) PowerBook 150

Non tested machine:
(1) PowerBook 190 series

Approved by: briggs

* Move the mii_bitbang attribute into dev/mii/files.mii
* Pull in dev/mii/files.mii from conf/files, rather than playing
the magic "files include order" dance in N machine-dependent
configuration definitions.

Use m68k/m68k/cacheops.[ch]
Use m68k/m68k/bus_dma.c
- Add mainbus_attach_args with bus_space_tag_t and bus_dma_tag_t.
- Use passed-in tags for nubus scan.

Switch to MI dev/md_root.c for archs which don't have any special
memory disk hooks (i.e. everything except atari).

- 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\""

include COMPAT_AOUT_M68K stuff.

branches: 1.98.2; 1.98.8;
Add an e_trapsignal member to struct emul, so that emulated processes can
send the appropriate signal depending on the trap type.

branches: 1.97.2;
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.

Add nubus attachment for smc91cxx driver.

branches: 1.95.4;
The declaration for esp has moved to conf/files. (Hi Charles!)

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.)

Merge wscons work onto the main development branch.

branches: 1.92.2;
- 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.

Unfortunately, several changes that are intermingled:
- Add initial IOP support. ADB doesn't work yet for me, but it's here so
that others will be encouraged to work on it. ADB_HW_IOP basically
is configured as a NOP so that serial consoles will continue to work.
- Roll via1_intr and via2_intr into the intr.c scheme--this also required
changing rtclock_intr to grovel the stack differently so that hardclock
gets the right arguments and softclock() doesn't get all reentrant.
- Make via1 interrupts parallel to via2 interrupts--handlers get a pass-
through pointer and we can register handlers. Register via1 interrupt
with intr_establish()--normally level 1, level 6 for A/UX scheme.
- Use intr_establish() to set real via2 interrupt handler instead of the
hacked function pointer.
- Reorganize adb-direct interrupts so that a function call is removed.
- Implement A/UX interrupts for all Quadras right now. We may need to
special case some Quadras, but Linux folks are reporting success on
several models.
- Fix intrnames to be accurate for the normal, PSC, and A/UX interrupt
configurations.

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

Add COMPAT_SVR4 for m68k.

branches: 1.88.2; 1.88.6; 1.88.8;
Add support for the IWM driver.

Added COMPAT_LINUX support.

New ADB "bus" interface:
o Separate ms and kbd drivers
o aed device for compatibility
o debug message cleanup in hardware direct support (from scottr)

Defopt ALTXBUTTONS, DISABLE_EXT_CACHE, and ZS_CONSOLE_ABORT.

New framework for handling processor interrupts, derived in part from
the hp300 port.

- Interrupts 3-6 use this immediately. Interrupt 7 is a special case,
and the VIA interrupts (1 and 2) will be addressed when that code is
rototilled.

- Modify the zs front end to register with the appropriate interrupt
controller: through the PSC on the AV Quadras, and direct to
interrupt 4 on the rest. Arrange to have the appropriate zsc_softc
supplied to us at interrupt time.

- Modify the direct ADB driver (and its PowerManager cousin) to call
intr_dispatch(), rather than zshard(). XXX This is a kludge, but at
least limits the brokenness to the ADB drivers, now.

As a side effect, this should fix PR 5590. Thanks to Bill Studenmund for
correctly determining the cause of the problem reported there.

Add a GRF_COMPAT option so that old-style grf ioctl() code can be
removed from the kernel.

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

Move on-board I/O and NuBus drivers to their own directories
via repository copy, and make the necessary adjustments to reflect
the moved files.

Pull in a few more kgdb-related bits. Getting there...

Add the newly created bus_space.c so it gets compiled.

Unify ADB options and place them all into opt_adb.h. Provide a knob to
enable ADB debugging messages if ADB_DEBUG is configured.

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.

Add in the if_mc ethernet driver for the AMD "MACE" part. This is the
internal ethernet on the Quadra/Centris 660av/840av.
Add initial support for the PSC (DMA controller) to support the above
(DMA SCSI remains unsupported). This involved also changing the way
that several interrupts are handled.
Above from David Huang <khym@bga.com>
Since the interrupts changed somewhat, we must also make the ipls
dynamic, defaulting to their prior levels and adjusted for the AVs.
I modelled this on the hp300.

branches: 1.73.2;
Convert to MI 8530 SCC driver, from Bill Studenmund. The new front end
also supports DTR/CTS flow control.

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: 1.71.2; 1.71.4;
Use the new 8390 driver back end.

Direct config to create an MRG_ADB option header.

Use common m68k sig_machdep.c, removing our local copies of these.

Remove redundant file directives.

Make new ADB driver the default.

Clean up after arp conversion; from Erik Bertelsen, closes PR 3372.

Separate bcopy and copypage stuff from copy.s

Add SONIC driver. Works on my Q700. Untested elsewhere.

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.

Undo some damage that CVS somehow let me get away with.

Adapt to sbc driver/attachment split

Add ncr53c9x flag to esp.

Update to reflect ae driver/attachment code split

Split the obio interface into two forms: optional address only for most
devices (obio_norm) or optional address, HSK, and DMA for 5380-based SCSI
controllers (obio_scsi5380). Update all obio-attached drivers
appropriately.

Also, attach fpu to mainbus, rather than obio.

Add an addr locator to obio.

Add needs-flag to asc driver

branches: 1.55.2;
"md" is declared in sys/conf/files, now.

Minor formatting cleanup, and remove an old comment

branches: 1.53.2;
rename: ramdisk => md

ncr96scsi -> esp for consistency with sparc and alpha.

Update for recent config(8) changes.

Attach ite semantics to the appropriate grf device, instead of obio.

Completely revamp setroot() and friends. Since Chris' version of this code
is close to how I reworked it, I pulled in the (essentially MI) NetBSD/alpha
and added the appropriate support around it.

- No need for the GENERIC kernel config option.
- NFS-mounted root and swap are supported.
- If we can't figure out where the root filesystem is from what the Booter
tells us, ask the user.
- Split the mainbus autoconfig code to a separate file.

Also, update/add copyrights as appropriate.

Update for new grf attachment code.

Serial driver with interface to a slightly modified version of the machine-
independent z8530 driver. When that driver is updated, the local copy
of those files may be removed. From Bill Studenmund.
Compiler warnings fixed by me.

Update for renamed sbc driver files

Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.

Remove trash left from a merge (probably really my fault).

shuffle some and change rd to pseudo-device.

Renamed the sbc driver files

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

Add sbc driver.

Don't special-case conf.c.

RAMDISK stuff.

include files.fpe instead of just fpu_emulate.c--to get the new fpe code.

Make the new m.i. scsi driver the default.

add needs-flag for the scsi chip interfaces.

Add pmap_bootstrap.c and take out mac68k_init.c.

Add new nubus handling that's much more robust.
Update via, if_ae, and grf accordingly.
Revamp grf.

Use new files.sunos

Move sunos_machdep.c to m68k

- 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.

Get rid of old file from hp300 origins!?

include mi scsi files file.
Change several devices from needs-count to needs-flag.

Reference cninit.c as well as cons.c

Nuke FPCOPROC and add FPU_EMULATE to GENERIC.
Support the above with gwr's sun3 stuff.

Use M68030 and M68040 instead of MC... Thanks to Luke Mewburn for
pointing out this inconsistency.

Update to add pramasm.s.

Add major for vnd.

add 'maxpartitions' keyword as first 'intesting' thing in the file, to
facilitate the solution of config.new's hardcoded partition number
problems.

sunos_sysent.c -> sunos_init_sysent.c and add a few tabs for
readability.

Mac ROM Glue changes from grantham@tenon.com.

compat/sunos/sun_* -> compat/sunos/sunos_*

Attempt to use sys/scsi.

new RCS ID format.

Give vnd a major number. Didn't work on my last attempt with it, but
this will be needed, anyway.

Add asc as a device. Format a tad.

Rearrange to alphabetize some. Nuke old console, add new console and
ADB code from Lawrence and Brad.

branches: 1.12.2;
Erf. Forgot to put mac68k_init.c in alphabetically.

Add mac68k_init.c and scsi96.c for 68040 macs and configure them. Not
much uses them, yet, but also added the MC68030 and MC68040 options.

Checkpoint. GENERIC has some things disabled. Makefile updated for
vnode_if and some cleanup. copy.s added to files.

Add files for compat_sunos. Shouldn't these be in sys/conf/files.newconf?

Add fpu.c and alphabetize a bunch.

Fix for magnum's scsi system, but referenced through arch/mac68k/scsi
as was the old stuff.

Make uk and su look like devices. Haven't tried compiling uk. su is still
nothing.

Makefile: Added -T 0 to link for kernel.
files.mac68k.newconf: Removed ddb entries.

kill entries duplicated in files.m68k.newconf

Add Apple Ethernet to GENERIC and files. Also add asc.c to files
for sound support.

Let's try DDB...

Migrate to new MACHINE definition (mac -> mac68k).

Add MAC68K_MEMSIZE option to hard-code memory size in MB, instead of
that given by Booter. Work around Booter bug by which max memory is
restricted to 255MB.

G/C obsoleted

Add genfb(4) driver for mac68k grfbus.
1, 2, 4, 8, 15, and 32 color-depths are supported.

ANSI colors on console are functional for depth >= 4.

Graphic applications based on wsfb API should work, provided
they can correctly handle fbi_fboffset and your color depth.

wsfb driver of Xorg 1.20 and mlterm-fb (framebuffer version of
x11/mlterm) work fine for depth == 1 || depth >= 8.

For depth == 8 (256 colors), graphic applications require
colormap callback, which is currently supported for some
internal graphic adapters, and only Civic (found on Quadra
AV series) was tested. Register definition and its usage are
taken from Linux. You can easily support other adapters if
Linux supports that.

Have fun, and any problem reports are welcomed!

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: 1.126.2; 1.126.4;
add a special rule to build m68k/fpu.c to avoid passing -msoft-float.
fixes GCC 6 kernel builds that use this file.

Merge copy-and-pasted fpu_probe() function (to share it among more m68k ports).
Tested on TT030, Sun3/80, and X68030.

branches: 1.124.2;
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: 1.123.6;
defflag GRF_COMPAT.

branches: 1.122.18; 1.122.20;
Added driver for the Creative Systems Inc. Hurdler CPI parallel printer card.
Timecounter support for the Z8536 counters A + B is not complete, yet.

Reviewed by Martin Husemann.

branches: 1.121.6; 1.121.8; 1.121.10; 1.121.12;
Since files.wscons et al. are included by ~all ports anyway, include
them in the mi "files" file, and remove include statements from md files.
These shouldn't pull in additional kernel code when not in use, so it
shouldn't do any harm except a risk of namespace collisions which
should be easy to fix.

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: 1.119.2;
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: 1.118.8; 1.118.10;
Switch mac68k's sn(4) Ethernet to MI SONIC driver.

Tested with Apple Ethernet CS Twisted-Pare Card on LC630 by me
and Quadra 650 on-board Ethernet by hauke@.
NuBus based cards and PowerBook variants are still untested.

Rather than attaching fpu as a usual device during cpu_configure(9),
initialize it explicitly in identifycpu() (before cpu_configure(9))
because after yamt-idlelwp merge savectx() is called before
cpu_configure(9) and it requires fputype initialized properly,
otherwise a kernel fails in savectx() if a machine doesn't have an FPU.

branches: 1.116.2; 1.116.4; 1.116.10;
MI softintr(9)'fy.
Probably problematic, but LC630 is running at single user.

branches: 1.115.26;
merge ktrace-lwp.

branches: 1.114.8;
only one of the obio locators was actually used, so get rid of the others
and collapse the two variations of obio into one. use the remaining locator
("addr") to differentiate the two possible esp and sbc devices (instead of
using the unit number).

branches: 1.113.4;
use the common procfs_machdep.c

branches: 1.112.6;
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.

merge all the m68k copies of kgdb_machdep.c.

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.

netdock* - ethernet driver for Asante NetDock/Newer Ether MicroDock.
by Daishi Kato <daishi@axlight.com>
test/stabilization by Takeo Kuwata <tkuwata@virus.kyoto-u.ac.jp>

branches: 1.105.2;
Add IDE drive support.

Note:
(1) Character device major number chages to 49 from 48(in my original
code). So it is necessary to rebuild device files.
(2) Must use Booter 2.0.0a10 or later.
(3) Default mode is cpu busy wait. It is defined by flags 0x1000.
It will be more slow than before.
No flags means hardware interrupt mode. But it might be able to
get no interrupts.

Support machines:
(1) Quadra 630 series
(2) PowerBook 150

Non tested machine:
(1) PowerBook 190 series

Approved by: briggs

* Move the mii_bitbang attribute into dev/mii/files.mii
* Pull in dev/mii/files.mii from conf/files, rather than playing
the magic "files include order" dance in N machine-dependent
configuration definitions.

Use m68k/m68k/cacheops.[ch]
Use m68k/m68k/bus_dma.c
- Add mainbus_attach_args with bus_space_tag_t and bus_dma_tag_t.
- Use passed-in tags for nubus scan.

Switch to MI dev/md_root.c for archs which don't have any special
memory disk hooks (i.e. everything except atari).

- 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\""

include COMPAT_AOUT_M68K stuff.

branches: 1.98.2; 1.98.8;
Add an e_trapsignal member to struct emul, so that emulated processes can
send the appropriate signal depending on the trap type.

branches: 1.97.2;
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.

Add nubus attachment for smc91cxx driver.

branches: 1.95.4;
The declaration for esp has moved to conf/files. (Hi Charles!)

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.)

Merge wscons work onto the main development branch.

branches: 1.92.2;
- 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.

Unfortunately, several changes that are intermingled:
- Add initial IOP support. ADB doesn't work yet for me, but it's here so
that others will be encouraged to work on it. ADB_HW_IOP basically
is configured as a NOP so that serial consoles will continue to work.
- Roll via1_intr and via2_intr into the intr.c scheme--this also required
changing rtclock_intr to grovel the stack differently so that hardclock
gets the right arguments and softclock() doesn't get all reentrant.
- Make via1 interrupts parallel to via2 interrupts--handlers get a pass-
through pointer and we can register handlers. Register via1 interrupt
with intr_establish()--normally level 1, level 6 for A/UX scheme.
- Use intr_establish() to set real via2 interrupt handler instead of the
hacked function pointer.
- Reorganize adb-direct interrupts so that a function call is removed.
- Implement A/UX interrupts for all Quadras right now. We may need to
special case some Quadras, but Linux folks are reporting success on
several models.
- Fix intrnames to be accurate for the normal, PSC, and A/UX interrupt
configurations.

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

Add COMPAT_SVR4 for m68k.

branches: 1.88.2; 1.88.6; 1.88.8;
Add support for the IWM driver.

Added COMPAT_LINUX support.

New ADB "bus" interface:
o Separate ms and kbd drivers
o aed device for compatibility
o debug message cleanup in hardware direct support (from scottr)

Defopt ALTXBUTTONS, DISABLE_EXT_CACHE, and ZS_CONSOLE_ABORT.

New framework for handling processor interrupts, derived in part from
the hp300 port.

- Interrupts 3-6 use this immediately. Interrupt 7 is a special case,
and the VIA interrupts (1 and 2) will be addressed when that code is
rototilled.

- Modify the zs front end to register with the appropriate interrupt
controller: through the PSC on the AV Quadras, and direct to
interrupt 4 on the rest. Arrange to have the appropriate zsc_softc
supplied to us at interrupt time.

- Modify the direct ADB driver (and its PowerManager cousin) to call
intr_dispatch(), rather than zshard(). XXX This is a kludge, but at
least limits the brokenness to the ADB drivers, now.

As a side effect, this should fix PR 5590. Thanks to Bill Studenmund for
correctly determining the cause of the problem reported there.

Add a GRF_COMPAT option so that old-style grf ioctl() code can be
removed from the kernel.

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

Move on-board I/O and NuBus drivers to their own directories
via repository copy, and make the necessary adjustments to reflect
the moved files.

Pull in a few more kgdb-related bits. Getting there...

Add the newly created bus_space.c so it gets compiled.

Unify ADB options and place them all into opt_adb.h. Provide a knob to
enable ADB debugging messages if ADB_DEBUG is configured.

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.

Add in the if_mc ethernet driver for the AMD "MACE" part. This is the
internal ethernet on the Quadra/Centris 660av/840av.
Add initial support for the PSC (DMA controller) to support the above
(DMA SCSI remains unsupported). This involved also changing the way
that several interrupts are handled.
Above from David Huang <khym@bga.com>
Since the interrupts changed somewhat, we must also make the ipls
dynamic, defaulting to their prior levels and adjusted for the AVs.
I modelled this on the hp300.

branches: 1.73.2;
Convert to MI 8530 SCC driver, from Bill Studenmund. The new front end
also supports DTR/CTS flow control.

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: 1.71.2; 1.71.4;
Use the new 8390 driver back end.

Direct config to create an MRG_ADB option header.

Use common m68k sig_machdep.c, removing our local copies of these.

Remove redundant file directives.

Make new ADB driver the default.

Clean up after arp conversion; from Erik Bertelsen, closes PR 3372.

Separate bcopy and copypage stuff from copy.s

Add SONIC driver. Works on my Q700. Untested elsewhere.

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.

Undo some damage that CVS somehow let me get away with.

Adapt to sbc driver/attachment split

Add ncr53c9x flag to esp.

Update to reflect ae driver/attachment code split

Split the obio interface into two forms: optional address only for most
devices (obio_norm) or optional address, HSK, and DMA for 5380-based SCSI
controllers (obio_scsi5380). Update all obio-attached drivers
appropriately.

Also, attach fpu to mainbus, rather than obio.

Add an addr locator to obio.

Add needs-flag to asc driver

branches: 1.55.2;
"md" is declared in sys/conf/files, now.

Minor formatting cleanup, and remove an old comment

branches: 1.53.2;
rename: ramdisk => md

ncr96scsi -> esp for consistency with sparc and alpha.

Update for recent config(8) changes.

Attach ite semantics to the appropriate grf device, instead of obio.

Completely revamp setroot() and friends. Since Chris' version of this code
is close to how I reworked it, I pulled in the (essentially MI) NetBSD/alpha
and added the appropriate support around it.

- No need for the GENERIC kernel config option.
- NFS-mounted root and swap are supported.
- If we can't figure out where the root filesystem is from what the Booter
tells us, ask the user.
- Split the mainbus autoconfig code to a separate file.

Also, update/add copyrights as appropriate.

Update for new grf attachment code.

Serial driver with interface to a slightly modified version of the machine-
independent z8530 driver. When that driver is updated, the local copy
of those files may be removed. From Bill Studenmund.
Compiler warnings fixed by me.

Update for renamed sbc driver files

Prototype for -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-uninitialized
Also change the device probing scheme to use something a bit more rational.
A current side-effect is that nubus cards are double-mapped. I expect
to fix that shortly.
Also change splclock() to block everything but serial hardware interrupts.

Remove trash left from a merge (probably really my fault).

shuffle some and change rd to pseudo-device.

Renamed the sbc driver files

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

Add sbc driver.

Don't special-case conf.c.

RAMDISK stuff.

include files.fpe instead of just fpu_emulate.c--to get the new fpe code.

Make the new m.i. scsi driver the default.

add needs-flag for the scsi chip interfaces.

Add pmap_bootstrap.c and take out mac68k_init.c.

Add new nubus handling that's much more robust.
Update via, if_ae, and grf accordingly.
Revamp grf.

Use new files.sunos

Move sunos_machdep.c to m68k

- 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.

Get rid of old file from hp300 origins!?

include mi scsi files file.
Change several devices from needs-count to needs-flag.

Reference cninit.c as well as cons.c

Nuke FPCOPROC and add FPU_EMULATE to GENERIC.
Support the above with gwr's sun3 stuff.

Use M68030 and M68040 instead of MC... Thanks to Luke Mewburn for
pointing out this inconsistency.

Update to add pramasm.s.

Add major for vnd.

add 'maxpartitions' keyword as first 'intesting' thing in the file, to
facilitate the solution of config.new's hardcoded partition number
problems.

sunos_sysent.c -> sunos_init_sysent.c and add a few tabs for
readability.

Mac ROM Glue changes from grantham@tenon.com.

compat/sunos/sun_* -> compat/sunos/sunos_*

Attempt to use sys/scsi.

new RCS ID format.

Give vnd a major number. Didn't work on my last attempt with it, but
this will be needed, anyway.

Add asc as a device. Format a tad.

Rearrange to alphabetize some. Nuke old console, add new console and
ADB code from Lawrence and Brad.

branches: 1.12.2;
Erf. Forgot to put mac68k_init.c in alphabetically.

Add mac68k_init.c and scsi96.c for 68040 macs and configure them. Not
much uses them, yet, but also added the MC68030 and MC68040 options.

Checkpoint. GENERIC has some things disabled. Makefile updated for
vnode_if and some cleanup. copy.s added to files.

Add files for compat_sunos. Shouldn't these be in sys/conf/files.newconf?

Add fpu.c and alphabetize a bunch.

Fix for magnum's scsi system, but referenced through arch/mac68k/scsi
as was the old stuff.

Make uk and su look like devices. Haven't tried compiling uk. su is still
nothing.

Makefile: Added -T 0 to link for kernel.
files.mac68k.newconf: Removed ddb entries.

kill entries duplicated in files.m68k.newconf

Add Apple Ethernet to GENERIC and files. Also add asc.c to files
for sound support.

Let's try DDB...

Migrate to new MACHINE definition (mac -> mac68k).

G/C obsoleted

Add genfb(4) driver for mac68k grfbus.
1, 2, 4, 8, 15, and 32 color-depths are supported.

ANSI colors on console are functional for depth >= 4.

Graphic applications based on wsfb API should work, provided
they can correctly handle fbi_fboffset and your color depth.

wsfb driver of Xorg 1.20 and mlterm-fb (framebuffer version of
x11/mlterm) work fine for depth == 1 || depth >= 8.

For depth == 8 (256 colors), graphic applications require
colormap callback, which is currently supported for some
internal graphic adapters, and only Civic (found on Quadra
AV series) was tested. Register definition and its usage are
taken from Linux. You can easily support other adapters if
Linux supports that.

Have fun, and any problem reports are welcomed!

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: 1.126.2; 1.126.4;
add a special rule to build m68k/fpu.c to avoid passing -msoft-float.
fixes GCC 6 kernel builds that use this file.

Merge copy-and-pasted fpu_probe() function (to share it among more m68k ports).
Tested on TT030, Sun3/80, and X68030.

branches: 1.124.2;
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: 1.123.6;
defflag GRF_COMPAT.

branches: 1.122.18; 1.122.20;
Added driver for the Creative Systems Inc. Hurdler CPI parallel printer card.
Timecounter support for the Z8536 counters A + B is not complete, yet.

Reviewed by Martin Husemann.

branches: 1.121.6; 1.121.8; 1.121.10; 1.121.12;
Since files.wscons et al. are included by ~all ports anyway, include
them in the mi "files" file, and remove include statements from md files.
These shouldn't pull in additional kernel code when not in use, so it
shouldn't do any harm except a risk of namespace collisions which
should be easy to fix.

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: 1.119.2;
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: 1.118.8; 1.118.10;
Switch mac68k's sn(4) Ethernet to MI SONIC driver.

Tested with Apple Ethernet CS Twisted-Pare Card on LC630 by me
and Quadra 650 on-board Ethernet by hauke@.
NuBus based cards and PowerBook variants are still untested.

Rather than attaching fpu as a usual device during cpu_configure(9),
initialize it explicitly in identifycpu() (before cpu_configure(9))
because after yamt-idlelwp merge savectx() is called before
cpu_configure(9) and it requires fputype initialized properly,
otherwise a kernel fails in savectx() if a machine doesn't have an FPU.

branches: 1.116.2; 1.116.4; 1.116.10;
MI softintr(9)'fy.
Probably problematic, but LC630 is running at single user.

branches: 1.115.26;
merge ktrace-lwp.

branches: 1.114.8;
only one of the obio locators was actually used, so get rid of the others
and collapse the two variations of obio into one. use the remaining locator
("addr") to differentiate the two possible esp and sbc devices (instead of
using the unit number).

branches: 1.113.4;
use the common procfs_machdep.c

branches: 1.112.6;
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.

merge all the m68k copies of kgdb_machdep.c.

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.

netdock* - ethernet driver for Asante NetDock/Newer Ether MicroDock.
by Daishi Kato <daishi@axlight.com>
test/stabilization by Takeo Kuwata <tkuwata@virus.kyoto-u.ac.jp>

branches: 1.105.2;
Add IDE drive support.

Note:
(1) Character device major number chages to 49 from 48(in my original
code). So it is necessary to rebuild device files.
(2) Must use Booter 2.0.0a10 or later.
(3) Default mode is cpu busy wait. It is defined by flags 0x1000.
It will be more slow than before.
No flags means hardware interrupt mode. But it might be able to
get no interrupts.

Support machines:
(1) Quadra 630 series
(2) PowerBook 150

Non tested machine:
(1) PowerBook 190 series

Approved by: briggs