Re-factor the boot device and consinit routines into common functions
per platform type (PCI vs TC), eliminating a bunch of copy-pasta.

branches: 1.64.2;
Always call platform.device_register(), even if bootdev_data is NULL.

Convert the Alpha port's bus_space back-end to manage address space
with vmem(9) arenas (using statically-allocated private boundary tags
for very early-in-boot) rather than extent(9).

As a side-effect, there's arguments to some initialization functions
that are no longer required, so garbage-collect those, update all the
call sites.

Adapt to the changed signature of pckbc_cnattach().

branches: 1.61.6;
Do a minor cleanup of alpha (this will make applying pullups post branching
easier).
u_int{8,16,32,64}_t -> uint{*}_t
Change all old-style definitions to C89 prototypes.
Whitespace cleanup.
Constification in db_disasm.c

branches: 1.60.2; 1.60.6;
#include <sys/bus.h> instead of <machine/bus.h>.

Major cleanup of alpha device drivers.
Switch to CFATTACH_DECL_NEW.
struct device * -> device_t
struct cfdata * -> cfdata_t
Use of device_xname. No direct access to struct device members.
Use aprint* (not complete).

branches: 1.58.10;
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: 1.56.44; 1.56.52; 1.56.58;
fix fallout from caddr_t changes.

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

branches: 1.54.20;
Insert an obviously missing double quote.

Use device_is_a().

Use device_parent().

branches: 1.51.2; 1.51.4; 1.51.6;
merge ktrace-lwp.

branches: 1.50.12;
Significant cleanup and bug fix of root device detection:
* On systems where it's relevant (6600, kn300, kn8ae), check which PCI bus
hierarchy we're looking at.
* Consistently check PCI function numbers (important for quad-channel ATA
controllers).
* Check the channel number (important for ATA and multi-channel SCSI
controllers).
* Check logical unit numbers.
* Use strcasecmp() to check b->protocol; the case is different depending on
the firmware revision.
* Remove b->boot_dev_type check; it's unneeded.
* Remove extraneous unneeded variables.

Not only does this fix a few PRs and multiple long-standing bugs, but the
code is smaller too.

PR 9432
PR 12225
PR 25830

No need to include wdvar.h anymore.

Catch up to ata/ide changes; look for a parent device of wd named "atabus"
instead of "pciide", and check one layer farther up in the device hierarchy
for the scsipidev device.

From Manuel Bouyer, tested by me on a up1500 (identical changes to other
ide-booting code).

branches: 1.47.2;
Also pass a type argument to comcnattach() and com_kgdb_attach().
comspeed() (and thus cominit()) may need this information.

remove trailing \n in panic(). approved perry.

Rather than referencing the cfdriver directly in the cfdata entries,
instead use a string naming the driver. The cfdriver is then looked
up in a list which is built at run-time.

Get the pointer to the driver name early, rather than always dereferencing
the cfdriver pointer.

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: 1.42.8;
Convert to new ata/atapi attach structs.

branches: 1.41.2; 1.41.4;
Use symbolic names for the CTB terminal type field, rather than
hard-coded constants.

add missing #include "opt_kgdb.h"

Add some page coloring defaults.

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

Add support for attaching "com" serial ports as KGDB devices.

branches: 1.36.2; 1.36.4;
CDROMs can exist on ide buses

increase number of parameters of pckbc_cnattach(), since offset of command port
is not 4 (KBCMDP), but 1 on jazz based platforms of arc port.

Needs to look at different stuff depending if the scsipi bus is SCSI or ATAPI

branches: 1.33.2;
When checking for netboot, also check for MOP protocol.

Add the support to boot an ide slave drive and to boot from the secondary
ide channel.
Michael Hitch gave me the final hint how to do that and Havard Eidnes
tested it with his slave drive.
This will also fix pr#8808 on the DS10 when I commit the changes to
dec_6600.c.

Split the PC-like keyboard controller driver into chip back-end and
bus front-end.

branches: 1.30.2; 1.30.8;
Don't get confused when pci function != 0.

- Use the CTB_TURBOSLOT_* macros from rpb.h.
- Don't assume bus/slot == ISA display. Instead, test for TYPE_ISA.
- Some cosmetic (whitespace, mostly) cleanup.

branches: 1.28.2;
Add support to boot from ide hard disks.

Fix printf format warnings on Alpha.

Hmmm... handle the case where there is no keyboard configured (panic
if the console selection is asking for it). Also add the stuff that
was missing from dec_kn300.

explicitely initialize console keyboard

Rewrite the way the platform model string is determined:
- Attempt to find the model string in the HWRPB's DSR area. Failing that
(if the HWRPB version is too old)...
- Look up the system variation in a variation/string table. Failing that
(unknown variation)...
- Create a default model string using the variation number.

Also, factor out a bunch of common code.

Make it a little more clear that the "eb164" systype doens't necessarily
mean that a machine is a DEC EB164 (it may be an AlphaPC 164, which is
different, from the firmware's perspective).

Recover from some include file foo.

Adjust for new "com" driver home.

Redo the platform specific identification and initialization, making
it more explicit where platform specific functions (like machine check
handling) should go.

Support for the upcoming NetBSD/Amiga Hypercom driver family:
* support chip clocks != COM_FREQ, by introducing sc_frequency (for the
mainline code) and adding a frequency parameter right after the rate
parameter to comcnattach() and com_kgdb_attach().
- Make com_isa and com_multi initialize sc_frequency to COM_FREQ.
- Make i386/machdep.c and alpha/dec_xxx.c call com*attach() with the freq.
parameter.
* supio_attach_args get two more fields: a sc_ipl and a sc_arg, both ints.
- com_supio uses the first for interupt establishment (all childs will, as
soon as they exist) and the 2nd for sc_frequency.
- drsupio passes sc_ipl alway as 5, and for the "com"s, sc_arg as 16*115200
- hyper will pass sc_ipl as 6, and sc_arg as 16 * 460800

Update for changes to how bus space tags are initialized.

Nuke the idea of <machine/options.h>. It completely defeats the purpose
of fine-grain option dependencies.

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.

Adapt to serial console attachment changes.

branches: 1.14.2; 1.14.4;
remove extraneous, and now incorrect, cpu_decl()s.

try a slightly different heuristic to differentiate between ISA and PCI
(VGA) consoles.

by default, provide RCS IDs for NetBSD/alpha kernel files in kernel binaries.
This can be disabled (to save a bit of space) with the NO_KERNEL_RCSIDS
options, which is present but commented out in the ALPHA config file.
In ELF-format kernels, these strings are present in the kernel binary but
are not loaded into memory. (In ECOFF-format kernels, there's no easy way
to keep them from being loaded, so they _are_ loaded into memory.)

include machine/options.h

use machine/conf.h instead of sys/conf.h and/or machine/cpuconf.h

clean up NetBSD RCS ID strings

comdefaultrate -> comconsrate
comconsbah -> comconsioh

fix check for bus number when root dev is behind PPB

change the fixed delay to allow serial console output to settle
to something smarter, suggested by Charles Hannum.

branches: 1.5.2;
update for recent com.c changes: delete references to now-nonexistant
comconsinit variable.

branches: 1.4.2;
update for chipsets' init functions' new prototypes

update for ISA VGA frame buffer possibily

convert cpu-dependent routine selection to use a centralized CPU switch, thus
deleting (and cleaning up) N pages of #ifdefs in machdep.c. While we're
at it, make the cpu type options generate flags, and check them instead of
kernel Makefile defines.

preliminary support for the EB164. The EB164 is more or less a 'normal'
21164 + 21172 box, with Yet Another Way of doing interrupts. The
interrupt mapping and handling code hasn't been written yet, and none
of this code has been tested. (Checkpoint of work in progress.)