branches: 1.1.2;
file asc.c was initially added on branch nisimura-pmax-wscons.

fix various typos, mainly s/trasfering/transferring/ and s/theese/these/.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.25.36; 1.25.38;
Fix botch on device_t/softc split in debug printf macro. from chs@

branches: 1.24.2; 1.24.12;
Cleanu <machine/*> includes

Merge from matt-nb5-mips64
Merge mips-specific arch files.

Fix a botch in the previous rev 1.21:
We have to mask higher bits on NCR register access via bus_space_read_4(9),
as the previous NCR_READ_REG() does.
Problem reported by Erik Bertelsen on port-pmax@.

I tested a different version on 3MIN and I also tested committed version
on gxemul, but 3MAX doesn't have asc_ioasic but asc_tc..

Micro optimization around ncr53c9x register accesses.

branches: 1.20.18;
Remove clause 3 and 4 from TNF licenses

branches: 1.19.2; 1.19.4;
Split device_t/softc for MI ncr53c9x and some related devices,
with various cleanup.

branches: 1.18.40;
Fix some caddr_t rototill fallout.

Some from Erik Bertelsen on port-pmax@.

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

branches: 1.16.16;
Use the SI capitalization for "Hz", "kHz", and "MHz" in comments and strings.
Add a space between numbers and Hz unit.

branches: 1.15.18; 1.15.32; 1.15.34; 1.15.36; 1.15.38;
Use PAGE_SIZE rather than NBPG.

Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.12.6;
Switch to MI SCSI and drop old pmax MD SCSI support completely.

branches: 1.11.2;
Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
(no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
will be requeued, or a REQUEST SENSE will be sent as appropriate.

Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge

branches: 1.10.2;
Set the boundary to NBPG for bus_dmamap_create(). The IOASIC DMA segment
can not cross a page boundary. This fixes a problem when a dump(8) buffer
just crossed a page boundary and bus_dmamap_load() would coalesce the
the overlap onto the first segment. The NEXTPTR value would get set to
-1 when starting the DMA transfer and the residual data for unaligned
transfers would be copied to physical address 0x1ffffffc. On the R3000,
this would result in corrupted data, and on the R4000 would usually result
in a hard system hang.

branches: 1.9.2;
- Take care of dm_segs[].dm_len value whenever the offset is adjusted.
Known not working well for 4MAX+ this moment.
- White spacing.

Have MI ncr53c9x_attach() the 2nd and 3rd arguments for scsipi_adater
and scsipi_device respectively, with size reduction of ncr53c9x_softc.
Specifying NULL instructs the driver to use default adapter and default
device codes. Every target port has ncr53c9x_attach(sc, NULL, NULL) anyway.

Use bus_dma(9) to instruct IOASIC DMA to load transferring addresses,
eliminating MIPS cache machinary exposure here.

branches: 1.6.2;
Get rid of hook for dk_establish() - pmax will now use device_register().

Cosmetic cleanups to hide local objects.

Fix boot device detection. Device probes are not done when adapters are
configured, but after all adapters have been configured. When multiple
adapters are present, only the last configured adapter could be matched
to the boot device slot. The adapter attach routines now check if that
adapter slot matches the boot device slot and saves the softc pointer
for that controller. Then when the disks are configured, dk_establish()
matches the appropriate controller. Also change the rz boot device test
to include a check for the adapter so that it works when booting from a
disk on adapters other than the first one.

Check and clear the appropriate IOASIC SCSI interrupt bits when in polled
I/O mode. Kernel dumps will now work with the IOASIC SCSI devices.

Introduce MI SCSI codes; for DECstation 5000s only this moment.

branches: 1.1.2; 1.1.4;
file asc_ioasic.c was initially added on branch nisimura-pmax-wscons.

Move MI PMAZ-A SCSI attachment to sys/dev/tc.

branches: 1.8.2;
Switch to MI SCSI and drop old pmax MD SCSI support completely.

branches: 1.7.2;
Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
(no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
will be requeued, or a REQUEST SENSE will be sent as appropriate.

Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge

branches: 1.6.4;
Have MI ncr53c9x_attach() the 2nd and 3rd arguments for scsipi_adater
and scsipi_device respectively, with size reduction of ncr53c9x_softc.
Specifying NULL instructs the driver to use default adapter and default
device codes. Every target port has ncr53c9x_attach(sc, NULL, NULL) anyway.

branches: 1.5.2;
Get rid of hook for dk_establish() - pmax will now use device_register().

Cosmetic cleanups to hide local objects.

Fix boot device detection. Device probes are not done when adapters are
configured, but after all adapters have been configured. When multiple
adapters are present, only the last configured adapter could be matched
to the boot device slot. The adapter attach routines now check if that
adapter slot matches the boot device slot and saves the softc pointer
for that controller. Then when the disks are configured, dk_establish()
matches the appropriate controller. Also change the rz boot device test
to include a check for the adapter so that it works when booting from a
disk on adapters other than the first one.

Introduce MI SCSI codes; for DECstation 5000s only this moment.

branches: 1.1.2; 1.1.4;
file asc_pmaz.c was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file ascvar.h was initially added on branch nisimura-pmax-wscons.

Replace old asic.c with one imported from a development branch.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.40.2; 1.40.8;
- Remove defunct codes and arrange consistency between pmax and alpha.
- Reduce 'ioasic_base' expose.

Forgot to commit an important change for bus_space/bus_dma.

Remove now defunct local implementation of ioasic_lance_dma_setup().

- Nuke '#ifdef alpha' which brings little useful, plus a small cleanup.

- Forgot to commit these two.

Nuke register and remove trailling white space.

branches: 1.34.4;
Don't prototype ioasicprint() - the prototype is now in
dev/tc/ioasicvar.h and we don't use it here anyway.

MI ioasic softc and child-device structs, gc duplicate struct definitions.
Add MI ioasic functions, but dont enable on alpha until tested.

Clean up initializers for pmax ioasic children. Use same struct as alpha.

- Nuke old leftover; round two. XXX Still there 3MAX's IOASIC disguise.
Rework will be done in conf/files.pmax, anyway.

branches: 1.30.2;
- Clearify what ioasic_init() is for. No runtime difference because
NetBSD/pmax does not fully utilize the hardware features.

Make this build for a 3MAX-only kernel.

Resync 3max (kn02) support.

Rework, based loosely on suggestions from Tohru Nisimura..

It's Just Wrong to configure a KN02 system slot as an IOCTL ASIC, but
since it's currently done that way, nuke the gratuitous printf that
reports the behavior.

* Use new defopt model-specific options and opt files.
Replace all DS5000_* and DS3100 ifdefs with ifdefs on DEC_ options.
* Use MI declarations, not pmax-specific, in model-specific init
that uses baseboard (ioasic) registers.
* Further cleanup of machdep.c. Clock-tick still needs more thought.
* Use 'ibus' names for 3100 baseboard devices in MI code.

Split sys/arch/pmaxpmax/{machdep.c,trap.c} as suggested by Jason Thorpe:
* add "Platform" support inpmax/pmax/sysconf.c and pmax/include/sysconf.h
(based on Alpha cpuconf.[ch], with a namechange to avoid clashes with
support for models of MIPS cpus. They differ more than Alphas).

* For each supported model of DECstation, create a separate file
with the support for that model. Use model codenames, since
support is really baseboard-specific and CPU daugherboards can change.
Move code from machdep.c and pmax_trap.c,
Add sysconf (nee "cpuconf") support.

* Rename model-specific functions to match sysconf names.

* Clean up autoconf.c. Use platform callbacks.

* Retire pmax_trap.c.

Leaves I/O bus configuration and console configuration untouched.

Update for changes to config.

Kill __BROKEN_INDIRECT_CONFIG on pmax.
Based on a patch from Chris G. Demetriou, December 1996.

use locator defines in "locators.h" to index cf_loc[]

Garbage-collect '#include <machine/pte.h>'.

<machine/locore.h> -> <machine/bus.h>

Remove the machConst.h (wrapper for Sprite-derived source), and all
#includes <machine/machConst.h> uses.
Other header files now include <mips/cpuregs.h> where necessary.

DECstation MIPS3 support: wbflush() is cpu-dependent, need declaration from
machine/locore.h.

Delint debugging-printf() macro.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

Update pmax drivers to use "const" on 2nd arg to cfprint_t:
turbocnhannel: include/tc_machdep.h, tc/tc_subr.c, tc/asic.c
kn01 baseboard: pmax/mainbus.c

Apply diff from the 1.2 release branch, so that ugly IOASIC debugging
is disabled by default:
>revision 1.9.4.2
>date: 1996/09/09 20:19:11; author: thorpej; state: Exp; lines: +2 -18
>Disable IOASIC_DEBUG so that autoconfiguration looks normal, by request
>of Jonathan Stone

change cfprint_t type definition to take a const char *, rather than
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).

Fix autoconfiguration stuff to more closely match the alpha - primarily
the IOASIC attached devices. The DS3100 will now configure properly.
Fix the DS5000/25 IOASIC table entry for the RTC so the RTC interrupts
get enabled.
Fix up a moved include file.

branches: 1.9.4;
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.

Resolve pmax and alpha IOCTL asic driver differences, pass 1:

Rename the ioctl asic register and slot macros from ASIC_<xxx> to
IOASIC_<xxx>, to be compatible with the machine-indpendent names in
sys/dev/tc/ioasicvar.h. The pmax code still uses
sys/arch/pmax/pmax/asic.h, as some of the registers and offsets
defined there are not yet defined in sys/dev/tc/ioasicvar.h.

Rename the ioctl asic base-address pointer from `asic_base' to `ioasic_base'.

Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
* Change the tc autoconfiguration tables to use a struct tc_attach_args
instead of the ad-hoc structure.
* Change all pmax device drivers to use a `struct confargs' that's
assignment-compatible with sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
Devices that can be present on a TC or as ioctl asic/mainbus builtins
use the same `struct confargs'.
* Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
an old, now-obsolete sys/arch/alpha snapshot.

* Update the comments and debugging code in interrupt handlers to
be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.

Update pmax kernel to compile with -Werror:
Update TURBOChannel and ioasic interrupt-establish routines to pass on their
device argument as a "void *", since that's how all the pmax interrupt handlers
are declared.

Change the signature of interrupt-handlers to take a void *
(a pointer to the softc) and return an int (indicating spurious
interrupts or other conditions.)

Fix references to ASIC_SLOT_RTC, which isn't yet defined on DECstations.

Initialize the ioasic slot probe table for the 3MIN (Decstation 5k/1xx)
and MAXINE (Decstation 5k/xx), instead of setting them to NULL.
New-config kernels should work on those machines now.

Rename the definition of the struct cfdriver for the IO ASIC from "asiccd"
to "ioasiccd", as the config-file name changed from "asic" to "ioasic".

Move IO ASIC interrupt-enable outside #ifdef DEBUG, where it had
accidentally snuck in. Clean up debugging messages and explicitly
give a warning on CPUs the code hasn't been tested on.

New-style config (config.new) autoconfiguration code for Decstation
turhsturbochannel machines. Lifted wholesale from cgd's Alpha
turbochannel code, with changes that reflect the slightly different
bus topology and `slot' numbering on Decstations.

branches: 1.1.2;
file bt431reg.h was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file bt459reg.h was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file cfb.c was initially added on branch nisimura-pmax-wscons.

Rework pmax turbochannel config, as suggested by Jason Thorpe.
Also make TC framebuffer-console search table-driven.

Does not yet include "tcasic" layer; there's no such hardware on DECstations
and nothing for a tcasic layer to do.

Fix autoconfiguration stuff to more closely match the alpha - primarily
the IOASIC attached devices. The DS3100 will now configure properly.
Fix the DS5000/25 IOASIC table entry for the RTC so the RTC interrupts
get enabled.
Fix up a moved include file.

branches: 1.5.4;
Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
* Change the tc autoconfiguration tables to use a struct tc_attach_args
instead of the ad-hoc structure.
* Change all pmax device drivers to use a `struct confargs' that's
assignment-compatible with sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
Devices that can be present on a TC or as ioctl asic/mainbus builtins
use the same `struct confargs'.
* Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
an old, now-obsolete sys/arch/alpha snapshot.

* Update the comments and debugging code in interrupt handlers to
be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.

arch/pmax/tc -> dev/tc, pass 1:
Eliminate pmax/tc/tc.h. Use dev/tc headers for pmax port. Change pmax TC
autoconfig tables to use structs (mostly) compatible with dev/tc/tcvar.h.
Move TC console search to tc.c.

Fix bugs in the turbochannel config table for MAXINE (personal decstation).

Add missing "priority" field value in KN02 "asic" configuration entry for
the Dallas-compatible real-time clock. The missing entry caused the offset
to end up in the "priority" field. New-style config now boots cleanly on a
KN02 (3MAX).

New-style config (config.new) autoconfiguration code for Decstation
turhsturbochannel machines. Lifted wholesale from cgd's Alpha
turbochannel code, with changes that reflect the slightly different
bus topology and `slot' numbering on Decstations.

Replace tc.c and ds-tc-conf.c with a re-written tc_subr.c. tc_subr.c
works with the revamped machine-independent TC code in sys/dev/tc.
A name change is necessary to avoid a name clash with sys/dev/tc/tc.c,
which also creates a tc.o.

Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
* Change the tc autoconfiguration tables to use a struct tc_attach_args
instead of the ad-hoc structure.
* Change all pmax device drivers to use a `struct confargs' that's
assignment-compatible with sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
Devices that can be present on a TC or as ioctl asic/mainbus builtins
use the same `struct confargs'.
* Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
an old, now-obsolete sys/arch/alpha snapshot.

* Update the comments and debugging code in interrupt handlers to
be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.

Add lots of debugging to the TurboChannel autoconfiguration code.

arch/pmax/tc -> dev/tc, pass 1:
Eliminate pmax/tc/tc.h. Use dev/tc headers for pmax port. Change pmax TC
autoconfig tables to use structs (mostly) compatible with dev/tc/tcvar.h.
Move TC console search to tc.c.

Fix bugs in the turbochannel config table for MAXINE (personal decstation).

Add entry for MAXINE xcfb baseboard framebuffer to the MAXINE
turbochannel configuration table.

Fix autoconfig table initializers for 3MIN (tested) and MAXINE (untested).

New-style config (config.new) autoconfiguration code for Decstation
turhsturbochannel machines. Lifted wholesale from cgd's Alpha
turbochannel code, with changes that reflect the slightly different
bus topology and `slot' numbering on Decstations.

Merge thorpej-cfargs2.

branches: 1.15.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.14.2;
malloc(9) -> kmem(9)

branches: 1.13.8;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

branches: 1.12.18;
Use-after-free.

ok christos@

Found by The Brainy Code Scanner.

branches: 1.11.12; 1.11.28; 1.11.30;
- split device_t/softc
- make sure that *(dtdv_handler)() registered via dt_establish_handler()
takes softc, not device_t as other interrupt handlers

No crash during device attach on GXemul.

branches: 1.10.22; 1.10.28; 1.10.32;
Remove clause 3 and 4 from TNF licenses

branches: 1.9.16; 1.9.18; 1.9.20;
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.

Use the softint API.

branches: 1.7.2; 1.7.10; 1.7.18; 1.7.20; 1.7.22;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.6.26;
merge ktrace-lwp.

branches: 1.5.2;
Change max -> max_polls to avoid shadowing.

Detection of mouse packet did not work with my mouse. It only sends 6 bytes
instead of the 8 defined by struct dt_locator_msg. Change the dectection
so we swap the mouse/keyboard addresses only if the packets don't match
what's expected (rather than on every packet). My mouse now works, and
if a different mouse sends an 8 byte packet, it should also work.

MAXINE keyboard and mouse now works, albeit with some minor issues.

Add drivers for the desktop bus, DC-7085 and pm display. Make it possible to
select between rcons or wscons at compile time. Ok'ed by simonb.

branches: 1.1.2; 1.1.12;
file dt.c was initially added on branch ad_pmax_wscons.

Merge thorpej-cfargs2.

branches: 1.12.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.11.44;
fix unused variable warnings

branches: 1.10.2; 1.10.12; 1.10.16;
Cleanu <machine/*> includes

- split device_t/softc
- make sure that *(dtdv_handler)() registered via dt_establish_handler()
takes softc, not device_t as other interrupt handlers

No crash during device attach on GXemul.

branches: 1.8.22; 1.8.28; 1.8.32;
Remove clause 3 and 4 from TNF licenses

branches: 1.7.40; 1.7.42; 1.7.44;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.6.26;
merge ktrace-lwp.

branches: 1.5.10;
Fix Maxine keyboard and mouse ioctl routines to return EPASSTHROUGH for
unrecognized commands so they can be passed to other handlers.

Fix MAXINE keyboard multi-key press bug. Keyboard sends all currently
depressed keys in each message. Any keys in current message that are
also present in previous message are ignored. However, copying a byte
array into an integer array and comparing entry by entry doesn't have
the desired effect. Change the definition of the save buffer to match
the current message buffer data.

MAXINE keyboard and mouse now works, albeit with some minor issues.

Add drivers for the desktop bus, DC-7085 and pm display. Make it possible to
select between rcons or wscons at compile time. Ok'ed by simonb.

branches: 1.1.2; 1.1.12;
file dtkbd.c was initially added on branch ad_pmax_wscons.

Merge thorpej-cfargs2.

branches: 1.12.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.11.68;
Cleanu <machine/*> includes

- split device_t/softc
- make sure that *(dtdv_handler)() registered via dt_establish_handler()
takes softc, not device_t as other interrupt handlers

No crash during device attach on GXemul.

branches: 1.9.22; 1.9.28; 1.9.32;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.40; 1.8.42; 1.8.44;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.7.4;
Tidy away wsmouse_input() abstractions and update
documentation to include the W direction.

branches: 1.6.20; 1.6.22;
merge ktrace-lwp.

branches: 1.5.10;
Fix Maxine keyboard and mouse ioctl routines to return EPASSTHROUGH for
unrecognized commands so they can be passed to other handlers.

Maxine mouse buttons were being mapped incorrectly (old dtop.c code mapped
them to serial mouse buttons, which were then mapped into events to pass
to the X server).
Also fix bug in mouse motion - putting 2 unsigned bytes into an integer
resulted in a 16-bit unsigned value, so negative mouse motion didn't work.

MAXINE keyboard and mouse now works, albeit with some minor issues.

Add drivers for the desktop bus, DC-7085 and pm display. Make it possible to
select between rcons or wscons at compile time. Ok'ed by simonb.

branches: 1.1.2; 1.1.12;
file dtms.c was initially added on branch ad_pmax_wscons.

branches: 1.1.2;
file dtop.c was initially added on branch nisimura-pmax-wscons.

merge ktrace-lwp.

Add drivers for the desktop bus, DC-7085 and pm display. Make it possible to
select between rcons or wscons at compile time. Ok'ed by simonb.

branches: 1.1.2; 1.1.12;
file dtreg.h was initially added on branch ad_pmax_wscons.

- split device_t/softc
- make sure that *(dtdv_handler)() registered via dt_establish_handler()
takes softc, not device_t as other interrupt handlers

No crash during device attach on GXemul.

branches: 1.5.22; 1.5.28; 1.5.32;
Remove clause 3 and 4 from TNF licenses

branches: 1.4.74; 1.4.76; 1.4.78;
merge ktrace-lwp.

MAXINE keyboard and mouse now works, albeit with some minor issues.

Add drivers for the desktop bus, DC-7085 and pm display. Make it possible to
select between rcons or wscons at compile time. Ok'ed by simonb.

branches: 1.1.2; 1.1.12;
file dtvar.h was initially added on branch ad_pmax_wscons.

Remove pmax/tc/if_le.c. Superseded by sys/dev/tc MI TC/ioasic lance drivers.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

Make the MI LANCE driver standalone, and use cfattach to resolve
naming conflicts between bus attachments on ports that can have
multiple instances of the LANCE.

Changed struct ifnet to have a pointer to the softc of the underlying
device and a printable "external name" (name + unit number), thus eliminating
if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_start)()
to take a struct ifnet *, rather than a unit number.

Add a hardware dependent initialization function lehwinit()

change LANCE copy & zero functions' names to start with amd7990_, and
remove their 'integrate' (usually defined to be 'static') keywords.
when lance drivers are split up by attachment, more than one file will
reference the copy/zero functions (i.e. not just the file that pulls in
am7990.c... and eventually inclusion of am7990.c should go away entirely).

Additional fixes to complete the NetBSD/1.1B config changes:

Add new device-attach struct cfattach le_tc_ca and struct cfdriver le_cd.
Change IOASIC cfdriver references from "ioasiccd" to "ioasic_cd".
Change "mainbuscd" to "mainbus_cd"

Resolve pmax and alpha IOCTL asic driver differences, pass 1:

Rename the ioctl asic register and slot macros from ASIC_<xxx> to
IOASIC_<xxx>, to be compatible with the machine-indpendent names in
sys/dev/tc/ioasicvar.h. The pmax code still uses
sys/arch/pmax/pmax/asic.h, as some of the registers and offsets
defined there are not yet defined in sys/dev/tc/ioasicvar.h.

Rename the ioctl asic base-address pointer from `asic_base' to `ioasic_base'.

Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
* Change the tc autoconfiguration tables to use a struct tc_attach_args
instead of the ad-hoc structure.
* Change all pmax device drivers to use a `struct confargs' that's
assignment-compatible with sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
Devices that can be present on a TC or as ioctl asic/mainbus builtins
use the same `struct confargs'.
* Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
an old, now-obsolete sys/arch/alpha snapshot.

* Update the comments and debugging code in interrupt handlers to
be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.

Use machine-independent TurboChannel include files from dev/tc.
Add machine-dependent TC definitions in pmax/include/tc_machdep.h.

*** empty log message ***

Re-apply fix from before the NetBSD/1.1 version: actually write the pointer
to the LANCE's dma region into the IO ASIC after computing it.

Remove LENITR_UNIT and supporting code that allowed passing a unit
number, instead of a softc pointer, to leintr(). Pmaxes don't need it anymore.

allow bus-specific lance drivers to use machine-independent buffer/descriptor
copy functions, and convert isa and pmax drivers to do so.

branches: 1.2.2;
Merge back fixes from the merged Decstation/Alpha driver.
Remove all references to #ifdef SPARSE, and use #ifdef alpha instead.
Only initialize ASIC dma on a machine with an ASIC.

Re-port the Alpha versino of NetBSD's machine-independent LANCE driver
back to the DECstation. Boots on 3MAX and 3MAXPLUS. The bug-fixes
applied to this driver since it forked off the Decstation code also
seem to fix long-standing DMA problems with the Decstation SCSI driver.

Remove pmax/tc/if_le.c. Superseded by sys/dev/tc MI TC/ioasic lance drivers.

Make the MI LANCE driver standalone, and use cfattach to resolve
naming conflicts between bus attachments on ports that can have
multiple instances of the LANCE.

Changed struct ifnet to have a pointer to the softc of the underlying
device and a printable "external name" (name + unit number), thus eliminating
if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_start)()
to take a struct ifnet *, rather than a unit number.

Merge back fixes from the merged Decstation/Alpha driver.
Remove all references to #ifdef SPARSE, and use #ifdef alpha instead.
Only initialize ASIC dma on a machine with an ASIC.

Re-port the Alpha versino of NetBSD's machine-independent LANCE driver
back to the DECstation. Boots on 3MAX and 3MAXPLUS. The bug-fixes
applied to this driver since it forked off the Decstation code also
seem to fix long-standing DMA problems with the Decstation SCSI driver.

branches: 1.1.2;
file ims332reg.h was initially added on branch nisimura-pmax-wscons.

The TC device addresses are defined in KSEG1, but this confuses
bus_space(9) which expects bus addresses and not kernel virtual
addresses. Pull the addresses back to bus addresses with
MIPS_KSEG1_TO_PHYS().

XXX: Fix this properly one day (without storing KSEG1 addrs in
the TC device configuration).

Fixes problem with TURBOchannel pmaxes panicing during
autoconfiguartion.

fix unused variable warnings

branches: 1.21.2; 1.21.12; 1.21.16;
Cleanu <machine/*> includes

Split device_t/softc. pmax is tested on GXemul, compile test only for alpha.

branches: 1.19.4; 1.19.6; 1.19.10;
ANSIfy functions with function-pointer arguments

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

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

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

branches: 1.15.112; 1.15.120; 1.15.126;
Use CFATTACH_DECL().

branches: 1.14.4; 1.14.8;
- Use PMAD-BA name for device match logic. It's not a real TURBOchannel
device and the id string is not found in option ROM string, but
ULTRIX/OSF1 call it so anyway.
- Squash IOASIC DMA buffer allocation into device attach() sequence.

Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).

branches: 1.12.2;
Eliminate unused sc_cookie field of struct ioasic_softc.

- Have SYS_DEV_xxx device cookie symbols to select and install proper
interrupt handlers into intrtab[] array, rather than the idea of devices
in 'psuedo' TURBOchannel slots.
- Nuke symbols for psuedo TC slots.
- Abandon never/unlikely used intr_disestablish()s.

Merge IOASIC register definitions.

Not to use (cfdata->cf_unit > 0) conditional in device match() routine.

Redo interrupt establishment, based in part on work on the
[nisimura-pmax-wscons] branch and suggestions from Toru Nisimura:
- Remove bogus tc_slot_info[] name for interrupt handling array
and replace with simplified struct intrhand intrtab[] array.
- Add intr_establish() and intr_disestablish() function pointers
to struct platform and initialise this in each model-specific
initialisation, and remove global tc_enable_interrupt function
pointer.
- Remove model-specific function declarations from ibus/ibusvar.h.
This is functionally identical to the current scheme, and doesn't
yet try to commonise interrupt establishment by bus type as the
[nisimura-pmax-wscons] branch does.

Also, move cpuspeed variable from autoconf.c to machdep.c

Remove unneeded include files (up to 16 in two files!).

Add trailing quote to RCS ID.

RCS ID police.

Function prototype cleanup.

branches: 1.3.2;
Fix typo in 3max+ scc1 device declaration - console output on a serial
console 3max+ works again.

Replace old asic.c with one imported from a development branch.

branches: 1.1.2; 1.1.4;
file ioasic.c was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file ioasicreg.h was initially added on branch nisimura-pmax-wscons.

- Nuke old leftover. This has no useful information and not used by any
other files.

branches: 1.3.4;
Update for changes to config.

RCSID Police.

Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
* Change the tc autoconfiguration tables to use a struct tc_attach_args
instead of the ad-hoc structure.
* Change all pmax device drivers to use a `struct confargs' that's
assignment-compatible with sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
Devices that can be present on a TC or as ioctl asic/mainbus builtins
use the same `struct confargs'.
* Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
an old, now-obsolete sys/arch/alpha snapshot.

* Update the comments and debugging code in interrupt handlers to
be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.

#include either <sys/cpu.h> or <mips/cpuregs.h> as needed

branches: 1.23.12; 1.23.30;
Split device_t/softc. Tested on GXemul.

branches: 1.22.4; 1.22.6; 1.22.10;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.

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

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

branches: 1.19.10; 1.19.18; 1.19.24;
Timecounter and generic todr support for pmax. From Garret D'Amore.

branches: 1.18.22; 1.18.84; 1.18.90; 1.18.98;
Use CFATTACH_DECL().

Declare all cfattach structures const.

No need to check that parent's cfdriver is ioasic_cd.

include sys/systm.h for strcmp() prototype.

branches: 1.14.8; 1.14.12;
Remove unneeded include files (up to 16 in two files!).

RCS ID police.

Use the badaddr() prototype in mips/include/cpu.h by including
<machine/cpu.h> in mips/include/mips_param.h. Remove duplicate
badaddr() prototypes from some pmax header files.

The clean-up continues:
- Make local-only function and variables static.
- Move function prototypes and extern variable declarations to
header files.
- Delete unused variables.
There's still a handful of extern declaraions that should be fixed up.

Function prototype cleanup.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.8.2; 1.8.8;
Nuke register and remove trailling white space.

branches: 1.7.4; 1.7.12;
oops, diffs to use dev/dec/mcclock_pad32 were in a different tree. Fix.

Copy alpha/tc/mcclock_ioasic.c (duplicated in pmax/tc/mcclock_ioasic.c)
into sys/dev/dec and split into a clockfns layer and a "middle" layer
for other DEC systems which use mcclocks with each onchip byte
register padded out to a 32-bit word.

Clone alpha/alpha/mcclock (also duplicated in pmax port) into
sys/dev/dec, and ifdef for default clockrates on pmax and alpha.

Use new machinery on pmax for ibus,ioasic attached mcclocks.

Use correct name ("ioasic") when checking parent bus.

branches: 1.4.4;
Garbage-collect Mach_clock_addr outside of machdep.c.
Use as mcclock_addr inside machdep.c, to disable clock interrupts
until the clock is autoconfigured.

branches: 1.3.2;
Move sys/dev/tc/mcclockvar.h -> sys/dev/dec/mcclockvar.h.
Update pmax clock code.

Include /sys/dev/dec/clockvar.h. Garbage-collect tc/clockvar.h.

Import mcclock from NetBSD/Alpha, mostly replacing the Sprite clock code.
interface. From Toru Nishimura <nisimura@itc.aist-nara.ac.jp>.

Partly merged back with Alpha code by Jonathan Stone. Needs more merging.

branches: 1.1.2;
file mfb.c was initially added on branch nisimura-pmax-wscons.

Remove RASTERCONSOLE support from the pmax port.

Use the LWP cached credentials where sane.

integrate kauth.

Use device_cfdata().

Use device_unit().

branches: 1.90.2;
Use the SI capitalization for "Hz", "kHz", and "MHz" in comments and strings.
Add a space between numbers and Hz unit.

branches: 1.89.4; 1.89.6; 1.89.8; 1.89.10;
more proc->lwp changes. (untested, but at least the pmax kernel builds)

merge ktrace-lwp.

Change the driver open function's conditional for overriding exclusive tty
use from checking the proc's uid to suser(9), and account for the use of
privileges. Noted by David Holland in PR kern/31126.

Also change this to use the proc argument instead of curproc.

branches: 1.86.2;
quell cast-qual and shadow warnings

kick out the ioasic offset check which happens in submatch() now

Constify the speedtab arrays

avoid hanging during autoconf if no mouse is attached. fixes PR 11111.
based on code from Christian Groessler.

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

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

branches: 1.81.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Fix 'struct lwp *' lossage.

make these compile after struct consdev change

Fix a tyop in a comment.

through, not throught.

merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe

Use CFATTACH_DECL().

Declare all cfattach structures const.

No need to check that parent's cfdriver is ioasic_cd.

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: 1.71.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

branches: 1.70.2; 1.70.4; 1.70.8;
b{cmp,copy,zero} -> mem{cmp,cpy,set}
Also remove some unnecessary argument casts.

Add `l_poll' to `struct linesw' and provide an xxxpoll() entry point
in each tty driver to indirect through it.

This allows tty line-disciplines to handle poll(2) system calls.

Remove unnecessary test of tp->t_linesw against NULL; they are results
of confusion while correcting compilation error after t_line is
replaced with t_linesw.

branches: 1.67.2;
Fix up line discipline change fallout.

Adapt to new line discipline scheme.

- Implement cnbell() -- ring the console bell. The cn_bell entrypoint
is optional.
- Add cn_bell to statically allocated consdevs as appropriate.

- Add missing "opt_ddb.h" to dc.c and dtop.c (oh, boy)
- Nuke irrelevant "dcvar.h" and "tc.h" inclusion from dc.c
- Put '#if NRASTERCONSOLE > 0' around scc_lk201_cnattach().

- Massive change of console initialization. Have each model its own
consinit().
- Fix fbconnect() and relatives; 'struct fbinfo' is initialized only once,
making sure no extraneous console resolution message is emitted.

Only prototype and include code for scc_kbd_init() and scc_mouse_init()
if NRASTERCONSOLE > 0. Fixes problem reported on port-pmax by Anders
Andersson.

Remove unneeded include files (up to 16 in two files!).

The clean-up continues:
- Make local-only function and variables static.
- Move function prototypes and extern variable declarations to
header files.
- Delete unused variables.
There's still a handful of extern declaraions that should be fixed up.

Function prototype cleanup.

Start of the "The Big Cleanup" - remove "ifdef alpha". This has
diverged enough from the alpha scc.c that keeping any pretence of
portability is not worth it.

Ick - include pmioctl.h to get the pmEventQueue typedef needed for
qvssvar.h (needed for the mouseInit() prototype). This _will_ be
cleaned up soon!

Include qvssvar.h to get mouseInput() prototype.

Rectify the jumbled naming scheme of routines in lk201.c. Function names
are now lower case and prefixed by 'lk_'. XXX lk_mouseinit() is bogus. It
belongs somewhere else.

Don't use our own defines for SCCDEV or RCONSDEV - pull in
<pmax/pmax/cons.h> for these values.

- When kbdMapChar() was modified to support returning multi-character
mappings, it broke Ctrl-Space; fix that.
- Clean up lk201.c a little.

branches: 1.52.2; 1.52.8;
Centralize the declaration and clearing of `cold'.

Nuke register and remove trailling white space.

make this compile again with no rcons.

Quote "AS IS" as in the majority of Carnegy Mellon notices.

Fix a pasto in copyright text which has been procreating like rabbits..

branches: 1.47.2;
Added support for cursor keys, function keys and friends. kbdMapChar now
returns 'char *' to do this. Codes returned for the various keys match
what 'rcons' termcap entry expects.

Remove an incorrect (but harmless) comment.

Jason Thorpe's changes from PR#6848. Makes 115200 bps work on some systems.
Reverse sense of #ifdef to disable 76.8k and 115.2k until we can verify
it works on all 8530 chips (similar changes didnt work on a /240 in 1996).

* make scc_tty_init() callable when very cold: call scc_coldparam() directly.
Use scc_tty_init() in scc_consinit(). Declare scc_consinit() in sccvar.h.

* Remove last vestige of special-case console handling in sccparam() code.

* Call scc_consinit() from findcons scc_serial() console-setup.
Dont PROM for scc serial console at all.

Use console_debugger() hook to enter DDB.

branches: 1.42.2;
scc_softCAR is a bit array, so set it accordingly for a serial console
port (instead of using the scc line number).

defopt DDB.

* Mouse reset blocks waiting for response for mouse.
Only initialize the mouse if we are using rcons as the console device.

Rewrite pmax console-probing code from scratch
as pmax/dev/findcons.c:
* Follow the same logic: look for the device the PROM is using.
* If it's a framebuffer and we don't have a driver for it, try other
* framebuffers in PROM search order.
* If no match found, warn user and fall over to serial console.
* if no serial console found, go back to PROM.

Rework tc/scc.c attach routine to give cleaner initialization semantics.
Prune out old 'braindamage' code.

Commit snapshot of pmax console rework as basepoint for 1.3.2 pullup:
* Do rcons output properly, using cn_tab->cn_dev which points
at rcons cdevsw entrypoints.

* The pmadx console code was using keyboard (serial) device
(major,minor) for raster consoles with special code in the keyboard
drivers to catch output intended for consoles, pull it off the device
queue, and print them via cnputc().
Ifdef out RCONS_BRAINDAMAGE.

* Other minor cleanup to pmax scc driver.

Clone lk20.h (keycode definitions) to /sys/dev/dec.
Update source pmax files accordingly.
cvs remove old pmax/dev/lk201.h.

Elimiate whitespace KNF botches due to emacs/X cut-and-paste.

oops, forgot more whitespace changs and alpha_mb() -> tc_mb().

Whitespace, cosmetic changes against alpha/tc/scc.c 1.40.

More tty dialin/dialout changes (t_wopen).
NB: dtop is a keyboard/mouse bus and doesn't support dialout.

Add local `extern' declaration of ioasic_cd, as in alpha/tc/scc.c.
Missed here after the removal of ioasic_cd decl from ioasicvar.h.

Update for changes to config.

Back out read-side DELAY() in previous revision added on advice of
tech-kern. Reported by Sean Davidson to cause erroneous doubling of
keyboard input on a 5000/50 under load.

Increasing the DELAY() from 2 to 30 doesn't help. Remove it for the
1.3 release. May cause problems with low-speed serial input, but
console keyboards work properly.

Workaround for port-pmax/4438 (pmax kernel glass-tty console code is broken)
until a proper fix is available:
Perpetuate the 4.4bsd design even further. Change keyboard-driver
open routines to check for an active raster console. If active, set the
keyboard struct tty's t_winsize from the rcons t_winsize on first open.
See pr 4438 for remaining problems and discussion of a complete fix.

branches: 1.28.6;
Kill __BROKEN_INDIRECT_CONFIG on pmax.
Based on a patch from Chris G. Demetriou, December 1996.

use locator defines in "locators.h" to index cf_loc[]

DDB for mips.
Add DDB interface to /sys/arch/mips/mips..
Rework heuristic stack traceback to work with DDB.
Add hooks to print exception log from DDB.
Add hooks from pmax console drivers: call Debugger()
after break from serial console, or 'DO' key from LK-xxx.

* Change Sprite MACH_xxx prefix to MIPS_xxx.

* Use standard mips terminology (xxx_KSEG0, xxx_KSEG1) instead of the
(more meaningful) Sprite names (xxx_CACHED, xxx_UNCACHED).

Garbage-collect <machine/locore.h>

DECstation MIPS3 support: wbflush() is cpu-dependent, need declaration from
machine/locore.h.

lint: add prototype for pmax serial-console inithook.

Don't do rcons-specific things if no rcons pseudo-device was declared. Clean up probe-time printfs.

Merge in changes from Alpha scc driver with RCS log message:

> revision 1.33
> date: 1997/05/15 02:15:55; author: thorpej; state: Exp; lines: +8 -4
> - In sccmatch(), check any user-specified offset, allowing scc unit numbers
> to be nailed down. From Ken Hornstein <kenh@cmf.nrl.navy.mil>, PR #3626,
> slightly modified to allow wildcarded offsets.
> - Blow away the cf->cf_unit check in sccmatch(); it's bogus.

Also gc usused references to NSCC and #include "scc.h"

Stop ignoring DCD transitions on ioasic SCC serial lines.
From entropy@zippy.bernstein.com>.

Cleanups, and convergence with the Alpha driver:
* kill scc_tty[] and needs-count.
* Add usable-when-cold version of sccparam().
* Add pre-autconf() console initialization entrypoint.
* remove lint for gcc -Wall
* wbflush() -> tc_mb()
all but the last of which have been fed through cgd and committed to the
Alpha scc driver.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

The MAXINE serial console is on scc0 (the only SCC on the MAXINE) instead
of scc1. Fix the check of which scc to initialize the console serial line
so that the MAXINE serial console will work.

tty stop functions really should return void, not int, and certainly not both.

Do tty_attach() for serial lines.

Fix autoconfiguration stuff to more closely match the alpha - primarily
the IOASIC attached devices. The DS3100 will now configure properly.
Fix the DS5000/25 IOASIC table entry for the RTC so the RTC interrupts
get enabled.
Fix up a moved include file.

branches: 1.11.4;
Additional fixes to complete the NetBSD/1.1B config changes:

change IOASIC cfdriver references from "ioasiccd" to "ioasic_cd"

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 serial-console support that works with `new-style' (config.new) autconf
code. Substantially the same code tested on a 5k/240. Should work on a
5k/1xx. Not tested on a MAXINE, where the single unit may break the
PROM-channel-number to driver-channel-number mapping.

Fix #includes.

Resolve pmax and alpha IOCTL asic driver differences, pass 1:

Rename the ioctl asic register and slot macros from ASIC_<xxx> to
IOASIC_<xxx>, to be compatible with the machine-indpendent names in
sys/dev/tc/ioasicvar.h. The pmax code still uses
sys/arch/pmax/pmax/asic.h, as some of the registers and offsets
defined there are not yet defined in sys/dev/tc/ioasicvar.h.

Rename the ioctl asic base-address pointer from `asic_base' to `ioasic_base'.

Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
* Change the tc autoconfiguration tables to use a struct tc_attach_args
instead of the ad-hoc structure.
* Change all pmax device drivers to use a `struct confargs' that's
assignment-compatible with sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
Devices that can be present on a TC or as ioctl asic/mainbus builtins
use the same `struct confargs'.
* Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
an old, now-obsolete sys/arch/alpha snapshot.

* Update the comments and debugging code in interrupt handlers to
be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.

Add speed entries for 7200 and multiples.
Add as-yet-unused speed entries for a 1x SCC clock, up to 200 Kbits.

Remove old top-bit-means-delay code, since nothing seems to need it,
and it apparently partially broke lk-201 initialization anyway.

Fix SCC bug that broke getty on pmax SCC lines: if RAW and LITOUT were
both off, haracters with their top bit clear were interpreted as a delay.
This (strange) behaviour is still available if SCC_PARITY_MEANS_DELAY
is defined.

Force a delay after calling SCC_WRITE_DATA() to give the chip
registers time to settle. DELAY(2) is reportedly enough. Without the
delay, output characters are occasionally doubled.

Change pmax rcons and low-level serial drivers to support the
old-style pmax polled input for cn_getc(). Needed because the
input side of rcons is not initialized in time for GENERIC kernels
to use it to read a root/swap devicename from /dev/console.

Move the pmax scc driver from sys/arch/pmax/dev to sys/arch/pmax/tc,
as it's a driver for a device under a TC IOASIC. The Alpha port also
has its scc driver in tc/scc.c, and the pmax driver scc is nearly the same
as the Alpha.

Remove RASTERCONSOLE support from the pmax port.

branches: 1.7.44; 1.7.58; 1.7.62;
- Massive change of console initialization. Have each model its own
consinit().
- Fix fbconnect() and relatives; 'struct fbinfo' is initialized only once,
making sure no extraneous console resolution message is emitted.

- Protect against multiple includes.
- Spacing.

The clean-up continues:
- Make local-only function and variables static.
- Move function prototypes and extern variable declarations to
header files.
- Delete unused variables.
There's still a handful of extern declaraions that should be fixed up.

Function prototype cleanup.

branches: 1.3.10;
* make scc_tty_init() callable when very cold: call scc_coldparam() directly.
Use scc_tty_init() in scc_consinit(). Declare scc_consinit() in sccvar.h.

* Remove last vestige of special-case console handling in sccparam() code.

* Call scc_consinit() from findcons scc_serial() console-setup.
Dont PROM for scc serial console at all.

branches: 1.2.16; 1.2.20;
Add port number encodings.

Add header files with prototyped declarations of the serial-chip hooks
used by old-style pmax console configuration.

branches: 1.1.2;
file sfb.c was initially added on branch nisimura-pmax-wscons.

Remove ancient non-MI pmax/tc/tc.c code.

* Change Sprite MACH_xxx prefix to MIPS_xxx.

* Use standard mips terminology (xxx_KSEG0, xxx_KSEG1) instead of the
(more meaningful) Sprite names (xxx_CACHED, xxx_UNCACHED).

Remove the machConst.h (wrapper for Sprite-derived source), and all
#includes <machine/machConst.h> uses.
Other header files now include <mips/cpuregs.h> where necessary.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

change cfprint_t type definition to take a const char *, rather than
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).

Fix #includes.

Re-write Decstation turbochannel autoconfiguration code to use the machine-
independent TC support in sys/dev/tc/tc.c and sys/dev/tc/tcvar.h:
* Change the tc autoconfiguration tables to use a struct tc_attach_args
instead of the ad-hoc structure.
* Change all pmax device drivers to use a `struct confargs' that's
assignment-compatible with sys/dev/tc/tcvar.h `struct tcdev_attach_args'.
Devices that can be present on a TC or as ioctl asic/mainbus builtins
use the same `struct confargs'.
* Eliminate the `BUS_CVTADDR()' macros which the pmax port inherited from
an old, now-obsolete sys/arch/alpha snapshot.

* Update the comments and debugging code in interrupt handlers to
be consistent with the machine-independent TC support.

Other commits that overlap the same source files include: re-enabling
clock-tick interrupts earlier, and counting hardclock ticks for vmstat -i.

arch/pmax/tc -> dev/tc, pass 1:
Eliminate pmax/tc/tc.h. Use dev/tc headers for pmax port. Change pmax TC
autoconfig tables to use structs (mostly) compatible with dev/tc/tcvar.h.
Move TC console search to tc.c.

Add untested, partial support for Decsystem 5100 (mipsfair).

Fix bugs in the turbochannel config table for MAXINE (personal decstation).

Update pmax kernel to compile with -Werror:
Update TURBOChannel and ioasic interrupt-establish routines to pass on their
device argument as a "void *", since that's how all the pmax interrupt handlers
are declared.

Change the signature of interrupt-handlers to take a void *
(a pointer to the softc) and return an int (indicating spurious
interrupts or other conditions.)

Remove extraneous debugging printf()s when running on processors
this code has been tested on.

New-style config (config.new) autoconfiguration code for Decstation
turhsturbochannel machines. Lifted wholesale from cgd's Alpha
turbochannel code, with changes that reflect the slightly different
bus topology and `slot' numbering on Decstations.

Remove pmax/tc/tc.h; use dev/tc/tcvar.h instead.

Use machine-independent TurboChannel include files from dev/tc.
Add machine-dependent TC definitions in pmax/include/tc_machdep.h.

New-style config (config.new) autoconfiguration code for Decstation
turhsturbochannel machines. Lifted wholesale from cgd's Alpha
turbochannel code, with changes that reflect the slightly different
bus topology and `slot' numbering on Decstations.

Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).

branches: 1.6.2;
- Have SYS_DEV_xxx device cookie symbols to select and install proper
interrupt handlers into intrtab[] array, rather than the idea of devices
in 'psuedo' TURBOchannel slots.
- Nuke symbols for psuedo TC slots.
- Abandon never/unlikely used intr_disestablish()s.

RCS ID police.

Arrange comment descriptions for internals of TC DECstations.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.2.8; 1.2.14;
- Nuke old leftover bogocities, round one; externs for non-existent
functions, less-intuitive #define's in inappropriate header files.

branches: 1.1.4;
Rework pmax turbochannel config, as suggested by Jason Thorpe.
Also make TC framebuffer-console search table-driven.

Does not yet include "tcasic" layer; there's no such hardware on DECstations
and nothing for a tcasic layer to do.

Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).

branches: 1.5.2;
- Have SYS_DEV_xxx device cookie symbols to select and install proper
interrupt handlers into intrtab[] array, rather than the idea of devices
in 'psuedo' TURBOchannel slots.
- Nuke symbols for psuedo TC slots.
- Abandon never/unlikely used intr_disestablish()s.

Arrange comment descriptions for internals of TC DECstations.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.2.2; 1.2.8;
Nuke register and remove trailling white space.

branches: 1.1.4; 1.1.12;
Rework pmax turbochannel config, as suggested by Jason Thorpe.
Also make TC framebuffer-console search table-driven.

Does not yet include "tcasic" layer; there's no such hardware on DECstations
and nothing for a tcasic layer to do.

Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).

branches: 1.5.2;
- Have SYS_DEV_xxx device cookie symbols to select and install proper
interrupt handlers into intrtab[] array, rather than the idea of devices
in 'psuedo' TURBOchannel slots.
- Nuke symbols for psuedo TC slots.
- Abandon never/unlikely used intr_disestablish()s.

Fix wrong figures in comments.

Arrange comment descriptions for internals of TC DECstations.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.1.4; 1.1.16; 1.1.22;
Rework pmax turbochannel config, as suggested by Jason Thorpe.
Also make TC framebuffer-console search table-driven.

Does not yet include "tcasic" layer; there's no such hardware on DECstations
and nothing for a tcasic layer to do.

branches: 1.1.2;
file tc_machdep.c was initially added on branch nisimura-pmax-wscons.

merge ktrace-lwp.

Fix long-standing error in interrupt index for Maxine built-in graphics
card. It was using the same index as the Ethernet interface, but didn't
cause any problems until the new xcfb.c driver installed an interrupt
handler. Ethernet interrupts went to the xcfb.c interrupt handler and
hung machine.

branches: 1.6.28;
Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).

branches: 1.5.2;
- Have SYS_DEV_xxx device cookie symbols to select and install proper
interrupt handlers into intrtab[] array, rather than the idea of devices
in 'psuedo' TURBOchannel slots.
- Nuke symbols for psuedo TC slots.
- Abandon never/unlikely used intr_disestablish()s.

Fix wrong figures in comments.

Arrange comment descriptions for internals of TC DECstations.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.1.4; 1.1.16; 1.1.22;
Rework pmax turbochannel config, as suggested by Jason Thorpe.
Also make TC framebuffer-console search table-driven.

Does not yet include "tcasic" layer; there's no such hardware on DECstations
and nothing for a tcasic layer to do.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.26.2; 1.26.8;
if there are no FB devices, tc_consprobeslot() fails always.

Change the way fb devices are configured and attached:
- 'struct fbsoftc' created, which points to a 'struct fbinfo'
- 'struct fbinfo' for each device is allocated with fballoc()

This means:
- Console device doesn't get different 'struct fbinfo' at attach
- Console device doesn't get initialized twice
- Color rcons now works
- The current Xserver MUST BE REBUILT.

Remove a few entries for nonexistant TC graphics boards.

Nuke register and remove trailling white space.

Added console initalization glue to allow `px' device to function as the
console.

branches: 1.21.4; 1.21.12;
Provide bus_space and bus_dma data structures to the TurboChannel bus.

* Fix typo in ROM name of mfb (PMAG-AA)
* Use TC_ROM_LLEN instead of constant, add space for sentinel.
* Don't print fb dimensions at console-probe time.

Rework pmax turbochannel config, as suggested by Jason Thorpe.
Also make TC framebuffer-console search table-driven.

Does not yet include "tcasic" layer; there's no such hardware on DECstations
and nothing for a tcasic layer to do.

<pmax/pmax/trap.h> has been obsoleted...

* Use new defopt model-specific options and opt files.
Replace all DS5000_* and DS3100 ifdefs with ifdefs on DEC_ options.
* Use MI declarations, not pmax-specific, in model-specific init
that uses baseboard (ioasic) registers.
* Further cleanup of machdep.c. Clock-tick still needs more thought.
* Use 'ibus' names for 3100 baseboard devices in MI code.

Split sys/arch/pmaxpmax/{machdep.c,trap.c} as suggested by Jason Thorpe:
* add "Platform" support inpmax/pmax/sysconf.c and pmax/include/sysconf.h
(based on Alpha cpuconf.[ch], with a namechange to avoid clashes with
support for models of MIPS cpus. They differ more than Alphas).

* For each supported model of DECstation, create a separate file
with the support for that model. Use model codenames, since
support is really baseboard-specific and CPU daugherboards can change.
Move code from machdep.c and pmax_trap.c,
Add sysconf (nee "cpuconf") support.

* Rename model-specific functions to match sysconf names.

* Clean up autoconf.c. Use platform callbacks.

* Retire pmax_trap.c.

Leaves I/O bus configuration and console configuration untouched.

Delete ancient warning printf() from when this code hadn't been
tested on 3MIN or MAXINE motherboards. Add __KERNEL_RSID while we're here.

branches: 1.14.2;
Add an entry for the bus_space_tag in the TC attach argument tables. Fixes
PR #4100.

branches: 1.13.4;
* Change Sprite MACH_xxx prefix to MIPS_xxx.

* Use standard mips terminology (xxx_KSEG0, xxx_KSEG1) instead of the
(more meaningful) Sprite names (xxx_CACHED, xxx_UNCACHED).

Remove the machConst.h (wrapper for Sprite-derived source), and all
#includes <machine/machConst.h> uses.
Other header files now include <mips/cpuregs.h> where necessary.

Use TC_SPEED* for turbochannel speed values (keeps me from being confused
more than I am).

Lint: include prototypes for TurboChannel framebuffer console-init functions.
include prototype for printf() and panic() and delint calls.

backout previous kprintf change

printf -> kprintf, sprintf -> ksprintf

change cfprint_t type definition to take a const char *, rather than
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).

* Add initialization of colourmap array when using mfb as a console.
* Add interrupt handler for 3MIN, where we cannot disable TC slot interrupts.
* Change mfbinit() signature to match other (pmax) TC framebuffer init
routines.
* TODO after 1.2: add {cfb,mbf,sfb}var.h. Declare init functions there.

Fix sfbinit() call to pass four arguments, not three, matching the
signature in sfb.c, which was changed to support multiple sfb devices.

Fix typo, colon instead of semicolon when DS_5000_25 is not defined.

Fix for PR #1828 and partial fix for PR #2548:
* Eliminate the #ifdef DS5000 and kernel config option DS5000 altogether.
option DS5000 was a hangover from 4.4bsd/pmax; it's never been clear
if it means "support for DS5000/200" or "support for any TC machine".
This implictly fixes pr 1828.

* Use the "tc.h" and NTC generated by config for a "tc? at mainbus"
where appropriate, intsead of #ifdef DS5000.


* Canonicalize the spelling of kernel options that enable support
for particular models. Use
DS5000_25 for the Personal Decstation aka MAXINE aka KN02-ca
DS5000_100 for the 5000/1xx series aka KMIN aka KN02-ba
DS5000_200 for the 5000/200 aka 3MAX aka KN02
DS500_240 for the 5000/240 aka 3MAXPLUS aka KN03

and change DS_5000_xxx to DS5000_xxx everywhere.

* Wrap the interrupt handlers for each model in the appropriate #ifdef,
instead of wrapping all of them with "#ifdef DS5000".

* Wrap the TC autoconfig for each model in the appropriate #ifdef.

Fix autoconfiguration stuff to more closely match the alpha - primarily
the IOASIC attached devices. The DS3100 will now configure properly.
Fix the DS5000/25 IOASIC table entry for the RTC so the RTC interrupts
get enabled.
Fix up a moved include file.

branches: 1.1.4;
TurboChannel bus auto-configuration tables, and TurboChannel pre-autoconfig
probe functions for console framebuffers, rewritten to work with the
machine-independent TC support in sys/dev/tc.

Make VAXstation 4000 TURBOchannel adaptor work.
PIO and IRQ tested on VS4000/60 and /96 with TC-USB (slhci) and PMAD-AA (le).
DMA is untested.
vax needs space to be mapped out, so memory space is pre-mapped for TC option
drivers not bus_space'ified yet, also providing custom bus_space methods for
this kludge.

branches: 1.32.8;
Clean-up (remove redundant declarations, concentrate checks).

switch to common MIPS bus_space and bus_dma
tested by flxd@

branches: 1.30.2;
#include either <sys/cpu.h> or <mips/cpuregs.h> as needed

branches: 1.29.14;
struct device * -> device_t, use device_xname() (from chs@)

branches: 1.28.2; 1.28.12;
Cleanu <machine/*> includes

Split device_t/softc. pmax is tested on GXemul.
Compile test only for alpha and vax.

XXX: alpha/tc/tcasic.c calls tcattach() via config_found(9), but
XXX: pmax/tc/tcbus.c and vax/vsa/tc_vsbus.c calls tcattach() directly.
XXX: It looks horrible...

branches: 1.26.2;
Merge forward from matt-nb5-mips64.
New interrupt code.
mips64 support for DS5000/260.

branches: 1.25.4; 1.25.6; 1.25.8;
ANSIfy functions with function-pointer arguments

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

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

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

branches: 1.21.6; 1.21.12; 1.21.16;
- assign 2 clause TNF license to the files cited as my ownership.
- abandon and remove my copyright notice from the three files were
copied in order to adapt HW I don't have; pvr.c, pm.c and stic.c

branches: 1.20.58; 1.20.60; 1.20.62; 1.20.64;
tcfb_cnattach(): pass the slot address through TC_PHYS_TO_UNCACHED() in
case the PROM hands us a physical or KSEG0 address.

Remove RASTERCONSOLE support from the pmax port.

branches: 1.18.4; 1.18.8;
merge ktrace-lwp.

branches: 1.17.16;
Add drivers for the desktop bus, DC-7085 and pm display. Make it possible to
select between rcons or wscons at compile time. Ok'ed by simonb.

branches: 1.16.6;
Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.14.4; 1.14.10;
Adjust to use <dev/sun/fbio.h>

branches: 1.13.2; 1.13.4;
white space nits.

branches: 1.12.4;
Add a missing parenthesis and correct the function return value declaration.

Implement the more flexiable `evcnt' interface as discussed (briefly) on
tech-kern and now documented in evcnt(9).

branches: 1.10.2;
Cleanup warning comment which is now irrelevant. Reorder codes.

- Have SYS_DEV_xxx device cookie symbols to select and install proper
interrupt handlers into intrtab[] array, rather than the idea of devices
in 'psuedo' TURBOchannel slots.
- Nuke symbols for psuedo TC slots.
- Abandon never/unlikely used intr_disestablish()s.

- Massive change of console initialization. Have each model its own
consinit().
- Fix fbconnect() and relatives; 'struct fbinfo' is initialized only once,
making sure no extraneous console resolution message is emitted.

Redo interrupt establishment, based in part on work on the
[nisimura-pmax-wscons] branch and suggestions from Toru Nisimura:
- Remove bogus tc_slot_info[] name for interrupt handling array
and replace with simplified struct intrhand intrtab[] array.
- Add intr_establish() and intr_disestablish() function pointers
to struct platform and initialise this in each model-specific
initialisation, and remove global tc_enable_interrupt function
pointer.
- Remove model-specific function declarations from ibus/ibusvar.h.
This is functionally identical to the current scheme, and doesn't
yet try to commonise interrupt establishment by bus type as the
[nisimura-pmax-wscons] branch does.

Also, move cpuspeed variable from autoconf.c to machdep.c

RCS ID police.

The clean-up continues:
- Make local-only function and variables static.
- Move function prototypes and extern variable declarations to
header files.
- Delete unused variables.
There's still a handful of extern declaraions that should be fixed up.

Function prototype cleanup.

branches: 1.3.2; 1.3.4;
Consistent panic messages when erroneous kernel configurations are found.

Fix a typo in PX TC device identification case analysis.

Very large scale change to sweep obstracles to remove 3MAX IOASIC disguise.
- Rework ibus device configuration and interrupt handler assignment.
- Remove TC device exposure in 'mainbus.c'
- Squash 'ibus_{3100,5100}.c' into a file; it can not cope with 3max.
- 'struct confargs' -> 'struct mainbus_attach_args'
Now about to remove tc_slot_info[] and tc_enable_interrupt inherited from
4.4BSD.

branches: 1.1.2;
file tfb.c was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file xcfb.c was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file zs_ioasic.c was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file zs_ioasicvar.h was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file zskbd.c was initially added on branch nisimura-pmax-wscons.

branches: 1.1.2;
file zskbdvar.h was initially added on branch nisimura-pmax-wscons.