Put back all header files defining ioctls

Only install headers which are actually used by our userland. This
saves about 2.2MB under /usr/include/dev/. Discussed on tech-kern@
recently.

I HOPE to get the list right. The headers I left in are ones
used for MI tools and those whose usage I discovered by grep over tree sources.
Feel free to put needed includes back in if you encounter anything which
should not be removed from lists.

branches: 1.3.2;
Add openfirmio which is an ioctl interface to OpenFirmware.

branches: 1.2.2;
Define some things related to the PCI Bus binding to OpenFirmware.

branches: 1.1.8;
Rework the way kernel include files are installed. In the new method,
as with user-land programs, include files are installed by each directory
in the tree that has includes to install. (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change. Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.

Make SPI direct configuration less #ifdef'y. No more checking what kind
of platform device tree; instead, use a device call to enumerate the
direct config children of the bus.

- Define a device call for PCI bus instances to fetch a direct child's
device handle given the device's device/function #s (extracted from
a pcitag_t). Use it to associate the handle with the child device
at config_found() time.
- Implement this device call for ACPI and OpenFirmware.
- Enable the OpenFirmware variant for evbarm FDT, macppc, ofppc, sparc64.
- Obsolete acpi_device_register(); it is no longer needed.
- Obsolete setting the OpenFirmware handle in PCI devices in the
sparc64 device_register(); it is no longer needed.

branches: 1.16.4; 1.16.6;
Split the i2c and spi stuff out into their own files.

branches: 1.15.4;
make OpenFirmware info available via sysctl.ofw
tested on macppc, shark and sparc64

branches: 1.14.18;
fix FDT build without openfirm pseudo-device

branches: 1.13.90; 1.13.110;
pull in ofw_subr.c with openfirm so we can use stuff like of_compatible()
without ofbus

branches: 1.12.22; 1.12.52; 1.12.58;
Fix a latent bug uncovered by the new autoconfiguration code: make
sure the "ofbus" device carries the "ofbus" interface attribute.

This is the other part of the fix for PR #18433.

branches: 1.11.2; 1.11.4;
Add openfirmio which is an ioctl interface to OpenFirmware.

Update several ports to at least work again without IPKDB
after the update of that.
Sorry for breaking this with my last changes :-(.
Fixes PR#9671 by Lennart Augustsson.

branches: 1.9.14;
Add common OpenFirmware network interface functions. Currently supports
decoding the `supported-network-types' and `chosen-network-type' properties
into ifmedia words.

Several things:
Clean up the name space here a bit.
Add a `busname' element to struct ofprobe (now struct ofbus_attach_args), and
check against it.
Nuke `ofroot'.
Rename the `openfirm' attribute to `ofbus'.

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

add ofw_subr.c, a file containing common OFW routines.

Update for config changes.

RCS id police.

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.

branches: 1.2.6;
Rename recently checked in KGDB to IPKDB to resolve conflicts with older KGDB

PowerPC port

Change the devhandle_from_*() functions to also take a "super handle",
from which the newly created handle will inherit it's implementation.
The root implementation for a new handle type is used if an invalid
"super handle" is passed.

Merge thorpej-cfargs2.

branches: 1.29.6;
If we're enumerating the root bus, skip some well-known nodes that
don't have any useful device child nodes:

aliases
options
openprom
chosen
packages

...and also allow machdep additions to this list (XXX which are temporarily
declared here for arm32 until there's a consistent machine/ofw_machdep.h
header file).

If we are attaching the OFW root, print out the banner-name and model
properties, if they exist.

branches: 1.27.2;
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: 1.26.30;
attach display devices first so we see more kernel output on shark

branches: 1.25.12; 1.25.30; 1.25.34; 1.25.38;
-CFATTACH_DECL(foo, sizeof(struct device),
+CFATTACH_DECL_NEW(foo, 0,

branches: 1.24.4; 1.24.6; 1.24.10;
struct device * -> device_t, no functional changes intended.

struct cfdata * -> cfdata_t, no functional changes intended.

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.)

branches: 1.20.74; 1.20.84; 1.20.90;
merge ktrace-lwp.

de-__P

branches: 1.18.4; 1.18.6;
sprintf -> snprintf

branches: 1.17.2;
Use aprint_normal() in cfprint routines.

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

implement device_register() for ofppc.
use ofcons_cnprobe().

add RCSIDs

Remove hack to skip OFW nodes which don't correspond to devices. These
are generally only at the toplevel of the OFW tree, and are best handled
by the code that configures the toplevel (which often needs special
handling anyway).

branches: 1.10.26; 1.10.28;
Several things:
Clean up the name space here a bit.
Add a `busname' element to struct ofprobe (now struct ofbus_attach_args), and
check against it.
Nuke `ofroot'.
Rename the `openfirm' attribute to `ofbus'.

s/of_nodename/of_packagename/. Eventually, we'll probably want something
similar for instances.

in ofbattach(), don't both doing an ofbprint() by hand if the root node.
The old ofbprint() wasn't particularly good (it forced the root node
to have a 'name' property, which apparently violates the OFW spec), and
the new one (though it normally prints more useful information) has
nothing useful to say about the root node. It's not clear to me that
'ofroot' should exist at all.

make ofbprint() use of_nodename(). cleanup.

(1) kill ofnmmatch(); nothing used it (and it's not clear that
anything _should_ use it).
(2) in the child properties check, also check for 'compatible,' and
config_found() if the child has it.

Update for config changes.

Update for no __BROKEN_INDIRECT_CONFIG.

backout kprintf changes

printf -> kprintf, sprintf -> ksprintf

PowerPC port

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.44.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.43.2; 1.43.12; 1.43.16;
convert to device_t, cfdata_t and CFATTACH_DECL_NEW.

Rename ttymalloc() to tty_alloc(), and ttyfree() to tty_free() for
consistency. Remove some unnecessary malloc.h inclusions as well.

branches: 1.41.4; 1.41.6;
Pass correct argument to q_to_b().

struct device * -> device_t, no functional changes intended.

struct cfdata * -> cfdata_t, no functional changes intended.

Ansify function definitions w/o arguments. Generated with sed.

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.)

branches: 1.35.2;
remove extra semicolons.

branches: 1.34.4;
use device_lookup_private to get softc

branches: 1.33.14; 1.33.16; 1.33.18; 1.33.20; 1.33.22;
- Factor out too many copies of the same bit of tty code.
- Fix another tty signalling/wakeup problem.

branches: 1.32.2;
Initialise the callbacks for tty.t_rstrt_ch in ttymalloc
as all drivers but Sun/SPARC's kd.c use the same arguments.
Separate callout_reset into callout_schedule and the initial
callout_setfunc using that.

branches: 1.31.6; 1.31.8; 1.31.12;
Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements

branches: 1.30.2; 1.30.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.29.4;
Adapt MD code to KAUTH_DEVICE_TTY_OPEN, batch #2 from Matt Fleming, thanks!

Also, add forgotten splx() calls in some places.

branches: 1.28.4; 1.28.6;
- Use the LWP cached credentials where sane.
- Minor cosmetic changes.

- include kauth.h for kauth_authorize_generic.
- whitespace.

integrate kauth.

Use device_private().

branches: 1.24.4; 1.24.6; 1.24.8; 1.24.10; 1.24.12;
merge ktrace-lwp.

branches: 1.23.4;
nuke trailing whitespace

de-__P

branches: 1.21.6; 1.21.14; 1.21.16;
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

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

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: 1.16.4;
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.

add RCSIDs

branches: 1.14.2;
Make this compile with -Wmissing-prototypes by adding appropriate
cdev_decl, bdev_decl, cons_decl

branches: 1.13.2;
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.

branches: 1.12.2;
Adapt to the new line discipline scheme.

Fix some callout fallout. Hi Jason!

New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.

branches: 1.9.14;
Replace TS_WOPEN with t_wopen, per mail on tech-kern.

Several things:
Clean up the name space here a bit.
Add a `busname' element to struct ofprobe (now struct ofbus_attach_args), and
check against it.
Nuke `ofroot'.
Rename the `openfirm' attribute to `ofbus'.

of_decode_int() the stdin and stdout properties.

Update for config changes.

DTRT if OF_read() returns 0 when no data is available.

Update for no __BROKEN_INDIRECT_CONFIG.

backout kprintf changes

printf -> kprintf, sprintf -> ksprintf

PowerPC port

Fix __HAVE_OLD_DISKLABEL bits so they at least compile.

branches: 1.53.6;
Add a disk ioctl DIOCRMWEDGES to remove all wedges of a given disk
(if not busy).

branches: 1.52.6; 1.52.14;
Virtio block devices may have a "scsi" device_type instead of "block",
so accept both.

branches: 1.51.2; 1.51.4;
Use C99-style initializers for struct dkdriver.

make more drivers use disk_ioctl, and add a dev parameter to it so that
we can merge the "easy" disklabel ioctls to it. Ultimately all this will
go do dk_ioctl once all the drivers have been converted.

Centralize wedge ioctls in disk_ioctl.

branches: 1.48.2;
support DIOCMWEDGES ioctl

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

Add d_discard to all struct bdevsw instances I could find.

I've set them all to nodiscard. Some of them (wd, dk, vnd, ld,
raidframe, maybe cgd) should be implemented for real.

branches: 1.45.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.44.2; 1.44.12; 1.44.16;
convert to device_t, cfdata_t and CFATTACH_DECL_NEW.

struct device * -> device_t, no functional changes intended.

struct cfdata * -> cfdata_t, no functional changes intended.

branches: 1.41.10;
use device_lookup_private to get softc

branches: 1.40.2; 1.40.4; 1.40.6; 1.40.8;
use aprint_*_dev and device_xname

branches: 1.39.16;
Correct the order of the arguments to disk_init().

branches: 1.38.2;
Merge disk init changes from the vmlocking branch. These seperate init /
destroy of 'struct disk' from attach / detach.

branches: 1.37.4; 1.37.6; 1.37.8; 1.37.10;
It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.

Replace some uses of lockmgr().

branches: 1.35.2; 1.35.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.34.2;
Remove more duplicate headers.
Patch by Slava Semushin <slava.semushin@gmail.com>

Again, this was tested by comparing obj files from a pristine and a patched
source tree against an i386/ALL kernel, and also for src/sbin/fsck_ffs,
src/sbin/fsdb and src/usr.sbin/makefs. Only changes in assert() line numbers
were detected in 'objdump -d' output.

branches: 1.33.8;
Use device_private().

branches: 1.32.4; 1.32.6; 1.32.8; 1.32.10; 1.32.12;
merge ktrace-lwp.

branches: 1.31.2;
Now that OF_read and OF_write have different signatures, we need to
cast one of them before assigning to a common function pointer.
Yes, this breaks strict type checking, but is needed to compile with
-Wcast-qual turned on.

nuke trailing whitespace

branches: 1.29.4; 1.29.6;
Add support for wedges to the OpenFirmware disk driver.

use safer string manipulation function

branches: 1.27.2;
Change bounds_check_with_label() to take a pointer to the disk structure,
rather than the label itself. This paves the way for some future changes.

Change return type of readdisklabel() to const char *
I hope I've found all the correct places!

implement separate read/write disk statistics:
- disk_unbusy() gets a new parameter to tell the IO direction.
- struct disk_sysctl gets 4 new members for read/write bytes/transfers.
when processing hw.diskstats, add the read&write bytes/transfers for
the old combined stats to attempt to keep backwards compatibility.

unfortunately, due to multiple bugs, this will cause new kernels and old
vmstat/iostat/systat programs to fail. however, the next time this is
change it will not fail again.

this is just the kernel portion.

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

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

fix error checking in ofdisk_open().
remove all vesitages of dk_establish().

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: 1.18.8;
add RCSIDs

branches: 1.17.2;
Make compile with -Wmissing-prototype -Wstrict-prototypes

Make this compile with -Wmissing-prototypes by adding appropriate
cdev_decl, bdev_decl, cons_decl

branches: 1.15.2; 1.15.4;
Return error in the case of using ODIOCGDINFO or ODIOCGDEFLABEL when
the number of partitions is > OLDMAXPARTITIONS. This is better
than silently truncating the label (don't want to silently throw
away partitions when using an old disklabel binary on a label with
> 8 partitions). From Enami Tsugutomo.

Adapt all disk devices in MI directories to handle ODIOC* calls
for ports that have bumped MAXPARTITIONS (and thus define
__HAVE_OLD_DISKLABEL).

branches: 1.13.4;
Nuke dk_establish() from orbit except from those ports which still use
it to determine the boot device: mvme68k, pc532, macppc, ofppc. Those
platforms should be changed to use device_register(). In the mean time,
those ports defined __BROKEN_DK_ESTABLISH.

branches: 1.12.14;
-Wall (one real bug, even!)

Minor style change.

Several things:
Clean up the name space here a bit.
Add a `busname' element to struct ofprobe (now struct ofbus_attach_args), and
check against it.
Nuke `ofroot'.
Rename the `openfirm' attribute to `ofbus'.

Update for config changes.

Oops, fix a couple of typos.

Implement DIOCGDEFLABEL.

branches: 1.6.2;
Fix an oversight and a typo.

Three changes to ofdsize():
- If the partition is already open, skip the open/close step. (Sync
with other disk drivers.)
- foosize()'s return value is in DEV_BSIZE units; adjust the size obtained
from the disklabel accordingly.
- Pass correct arguments to ofdopen() and ofdclose().

- Update for no __BROKEN_INDIRECT_CONFIG.
- Determine and remember if we are a floppy.
- Workaround for what is apparently a firmware bug - ignore the sector
size returned by the device. On my Firepower's floppy, block-size
is the same as max-transfer, which causes Lossage.
- Don't read the disklabel on a floppy; do what the ISA floppy driver
does, which is assign the entire disk to each "partition", although
we do not deal with the density stuff.
- FIREPOWERBUGS -> FIRMWORKSBUGS
- Some general cleanup.

backout kprintf changes

printf -> kprintf, sprintf -> ksprintf

PowerPC port

Adopt <net/if_stats.h>.

branches: 1.62.6;
Remove very old IFF_NOTRAILERS flag.

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!)

Retire ipkdb entirely. The option was removed from the config files
yesterday.

ok kamil christos

branches: 1.59.2;
Implement the BPF direction filter (BIOC[GS]DIRECTION). It provides backward
compatibility with BIOC[GS]SEESENT ioctl. The userland interface is the same
as FreeBSD.

This change also fixes a bug that the direction is misunderstand on some
environment by passing the direction to bpf_mtap*() instead of checking
m->m_pkthdr.rcvif.

It's not required to include net/bpfdesc.h. Remove it.

branches: 1.57.8; 1.57.14;
Move bpf_mtap and if_ipackets++ on Rx of each driver to percpuq if_input

The benefits of the change are:
- We can reduce codes
- We can provide the same behavior between drivers
- Where/When if_ipackets is counted up
- Note that some drivers still update packet statistics in their own
way (periodical update)
- Moved bpf_mtap run in softint
- This makes it easy to MP-ify bpf

Proposed on tech-kern and tech-net

MFREE -> m_free

branches: 1.55.2;
Introduce m_set_rcvif and m_reset_rcvif

The API is used to set (or reset) a received interface of a mbuf.
They are counterpart of m_get_rcvif, which will come in another
commit, hide internal of rcvif operation, and reduce the diff of
the upcoming change.

No functional change.

Introduce softint-based if_input

This change intends to run the whole network stack in softint context
(or normal LWP), not hardware interrupt context. Note that the work is
still incomplete by this change; to that end, we also have to softint-ify
if_link_state_change (and bpf) which can still run in hardware interrupt.

This change softint-ifies at ifp->if_input that is called from
each device driver (and ieee80211_input) to ensure Layer 2 runs
in softint (e.g., ether_input and bridge_input). To this end,
we provide a framework (called percpuq) that utlizes softint(9)
and percpu ifqueues. With this patch, rxintr of most drivers just
queues received packets and schedules a softint, and the softint
dequeues packets and does rest packet processing.

To minimize changes to each driver, percpuq is allocated in struct
ifnet for now and that is initialized by default (in if_attach).
We probably have to move percpuq to softc of each driver, but it's
future work. At this point, only wm(4) has percpuq in its softc
as a reference implementation.

Additional information including performance numbers can be found
in the thread at tech-kern@ and tech-net@:
http://mail-index.netbsd.org/tech-kern/2016/01/14/msg019997.html

Acknowledgment: riastradh@ greatly helped this work.
Thank you very much!

branches: 1.53.14;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.52.2; 1.52.12;
convert to device_t, cfdata_t and CFATTACH_DECL_NEW.

remove an unused variable.

Push the bpf_ops usage back into bpf.h. Push the common ifp->if_bpf
check into the inline functions as well the fourth argument for
bpf_attach.

branches: 1.49.2; 1.49.4;
Redefine bpf linkage through an always present op vector, i.e.
#if NBPFILTER is no longer required in the client. This change
doesn't yet add support for loading bpf as a module, since drivers
can register before bpf is attached. However, callers of bpf can
now be modularized.

Dynamically loadable bpf could probably be done fairly easily with
coordination from the stub driver and the real driver by registering
attachments in the stub before the real driver is loaded and doing
a handoff. ... and I'm not going to ponder the depths of unload
here.

Tested with i386/MONOLITHIC, modified MONOLITHIC without bpf and rump.

struct device * -> device_t, no functional changes intended.

struct cfdata * -> cfdata_t, no functional changes intended.

Remove extra whitespace added by a stupid tool.
XXX: more in src/sys/arch

Correct bungled bcopy() -> memcpy() conversion

bcopy -> memcpy

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.)

branches: 1.42.4;
*** Summary ***

When a link-layer address changes (e.g., ifconfig ex0 link
02:de:ad:be:ef:02 active), send a gratuitous ARP and/or a Neighbor
Advertisement to update the network-/link-layer address bindings
on our LAN peers.

Refuse a change of ethernet address to the address 00:00:00:00:00:00
or to any multicast/broadcast address. (Thanks matt@.)

Reorder ifnet ioctl operations so that driver ioctls may inherit
the functions of their "class"---ether_ioctl(), fddi_ioctl(), et
cetera---and the class ioctls may inherit from the generic ioctl,
ifioctl_common(), but both driver- and class-ioctls may override
the generic behavior. Make network drivers share more code.

Distinguish a "factory" link-layer address from others for the
purposes of both protecting that address from deletion and computing
EUI64.

Return consistent, appropriate error codes from network drivers.

Improve readability. KNF.

*** Details ***

In if_attach(), always initialize the interface ioctl routine,
ifnet->if_ioctl, if the driver has not already initialized it.
Delete if_ioctl == NULL tests everywhere else, because it cannot
happen.

In the ioctl routines of network interfaces, inherit common ioctl
behaviors by calling either ifioctl_common() or whichever ioctl
routine is appropriate for the class of interface---e.g., ether_ioctl()
for ethernets.

Stop (ab)using SIOCSIFADDR and start to use SIOCINITIFADDR. In
the user->kernel interface, SIOCSIFADDR's argument was an ifreq,
but on the protocol->ifnet interface, SIOCSIFADDR's argument was
an ifaddr. That was confusing, and it would work against me as I
make it possible for a network interface to overload most ioctls.
On the protocol->ifnet interface, replace SIOCSIFADDR with
SIOCINITIFADDR. In ifioctl(), return EPERM if userland tries to
invoke SIOCINITIFADDR.

In ifioctl(), give the interface the first shot at handling most
interface ioctls, and give the protocol the second shot, instead
of the other way around. Finally, let compatibility code (COMPAT_OSOCK)
take a shot.

Pull device initialization out of switch statements under
SIOCINITIFADDR. For example, pull ..._init() out of any switch
statement that looks like this:

switch (...->sa_family) {
case ...:
..._init();
...
break;
...
default:
..._init();
...
break;
}

Rewrite many if-else clauses that handle all permutations of IFF_UP
and IFF_RUNNING to use a switch statement,

switch (x & (IFF_UP|IFF_RUNNING)) {
case 0:
...
break;
case IFF_RUNNING:
...
break;
case IFF_UP:
...
break;
case IFF_UP|IFF_RUNNING:
...
break;
}

unifdef lots of code containing #ifdef FreeBSD, #ifdef NetBSD, and
#ifdef SIOCSIFMTU, especially in fwip(4) and in ndis(4).

In ipw(4), remove an if_set_sadl() call that is out of place.

In nfe(4), reuse the jumbo MTU logic in ether_ioctl().

Let ethernets register a callback for setting h/w state such as
promiscuous mode and the multicast filter in accord with a change
in the if_flags: ether_set_ifflags_cb() registers a callback that
returns ENETRESET if the caller should reset the ethernet by calling
if_init(), 0 on success, != 0 on failure. Pull common code from
ex(4), gem(4), nfe(4), sip(4), tlp(4), vge(4) into ether_ioctl(),
and register if_flags callbacks for those drivers.

Return ENOTTY instead of EINVAL for inappropriate ioctls. In
zyd(4), use ENXIO instead of ENOTTY to indicate that the device is
not any longer attached.

Add to if_set_sadl() a boolean 'factory' argument that indicates
whether a link-layer address was assigned by the factory or some
other source. In a comment, recommend using the factory address
for generating an EUI64, and update in6_get_hw_ifid() to prefer a
factory address to any other link-layer address.

Add a routing message, RTM_LLINFO_UPD, that tells protocols to
update the binding of network-layer addresses to link-layer addresses.
Implement this message in IPv4 and IPv6 by sending a gratuitous
ARP or a neighbor advertisement, respectively. Generate RTM_LLINFO_UPD
messages on a change of an interface's link-layer address.

In ether_ioctl(), do not let SIOCALIFADDR set a link-layer address
that is broadcast/multicast or equal to 00:00:00:00:00:00.

Make ether_ioctl() call ifioctl_common() to handle ioctls that it
does not understand.

In gif(4), initialize if_softc and use it, instead of assuming that
the gif_softc and ifp overlap.

Let ifioctl_common() handle SIOCGIFADDR.

Sprinkle rtcache_invariants(), which checks on DIAGNOSTIC kernels
that certain invariants on a struct route are satisfied.

In agr(4), rewrite agr_ioctl_filter() to be a bit more explicit
about the ioctls that we do not allow on an agr(4) member interface.

bzero -> memset. Delete unnecessary casts to void *. Use
sockaddr_in_init() and sockaddr_in6_init(). Compare pointers with
NULL instead of "testing truth". Replace some instances of (type
*)0 with NULL. Change some K&R prototypes to ANSI C, and join
lines.

branches: 1.41.4; 1.41.10; 1.41.12;
use aprint_*_dev and device_xname

branches: 1.40.28;
Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements

branches: 1.39.2; 1.39.4;
Fix more caddr_t -> void * lossage

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

branches: 1.37.14;
integrate kauth.

Use device_private().

Use device_unit().

branches: 1.34.4; 1.34.6; 1.34.8; 1.34.10; 1.34.12;
merge ktrace-lwp.

branches: 1.33.4;
nuke trailing whitespace

Eliminate use of M_HASFCS. Use a buffer large enough to receive a
full-length Ethernet frame.

branches: 1.31.2; 1.31.10; 1.31.12;
Zero out the buffer when padding packet to ETHER_MIN_LEN-ETHER_CRC_LEN

in ofnet_read(), interpret returns of either -2 or 0 from OF_read() as
meaning that there is no packet available. the OF spec reportedly
says that it's supposed to return 0 in this case, but my Firepower box
uses -2, so this is probably another of those FIRMWORKSBUGS things.
we'll accept both values in any case.

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Use CFATTACH_DECL().

Declare all cfattach structures const.

use splnet() around the body of ofnet_read(). this is logically the
receive interrupt handler since it passes received packets to the
interface's input handler. that ends up scheduling a network softint
and queuing the packet on the interface's receive queue (in that order),
so if softnet isn't blocked at this point then softnet() doesn't find
the packet until it's triggered again by something else.
remove all vesitages of dk_establish().

branches: 1.24.8;
bring in latest ALTQ from kjc. ALTQify some of the drivers.

add RCSIDs

FCS check and padding for minimum size Ethernet packet

Make compile with -Wmissing-prototype -Wstrict-prototypes

branches: 1.20.2; 1.20.4;
Move bpfattach()/bpfdetach() calls into ether_ifattach()/ether_ifdetach().

Nuke dk_establish() from orbit except from those ports which still use
it to determine the boot device: mvme68k, pc532, macppc, ofppc. Those
platforms should be changed to use device_register(). In the mean time,
those ports defined __BROKEN_DK_ESTABLISH.

New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.

branches: 1.17.2;
Rework layer 2 protocol input routines. Instead of calling e.g. ether_input()
directly, call the function pointer (*if_input)(ifp, m). The input routine
expects the packet header to be at the head of the packet, and will adjust
as necessary. Privatize the layer 2 input and output routines, allowing
*_ifattach() to set them up as appropriate.

Make this compile again.

branches: 1.15.6; 1.15.10;
defopt INET, NETATALK.

Missing include <sys/systm.h>.

Several things:
Clean up the name space here a bit.
Add a `busname' element to struct ofprobe (now struct ofbus_attach_args), and
check against it.
Nuke `ofroot'.
Rename the `openfirm' attribute to `ofbus'.

Make sure the data after the Ethernet header is aligned. (It's been
in the Shark source tree for a while, but Jason's recent commit to
dp8390.c spurred me to check it in here.)
XXX Assumes the device is an ethernet, but then so does other code in
this driver.

fix typo: s/max-address/mac-address/

Update for config changes.

Oops; forgot to GC the last mbuf allocated when out of clusters.
Also, DTRT if OF_read() returns 0 when no data is available..

Fix typo in previous.

If we fail to allocate a cluster to hold a large packet, simply
drop it rather than using a chain of tiny mbufs.

- Update for no __BROKEN_INDIRECT_CONFIG.
- Fix BPF hooks.

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.

branches: 1.4.6;
Rename recently checked in KGDB to IPKDB to resolve conflicts with older KGDB

backout kprintf changes

printf -> kprintf, sprintf -> ksprintf

PowerPC port

Change todr_chip_handle::cookie -> todr_chip_handle::todr_dev, and
make it a device_t. Upcoming functional changes will require the
device_t associated with a TODR device.

Change todr_chip_handle::bus_cookie -> todr_chip_handle::todr_devaux.
Nothing was using the old field, but I decided to keep it around just
in cause something needs it in the future.

And with these largely mechanical yet semantically meaningful changes,
thus spake the Oracle: "Welcome to NetBSD 11.99.2."

convert to device_t, cfdata_t and CFATTACH_DECL_NEW.

struct device * -> device_t, no functional changes intended.

struct cfdata * -> cfdata_t, no functional changes intended.

branches: 1.20.54; 1.20.70;
Convert shark and ofppc to new common ofrtc and MI todr code. Tested
on shark. Ok christos@, martin@.

branches: 1.19.8;
Use device_private().

branches: 1.18.4; 1.18.6; 1.18.8; 1.18.10; 1.18.12;
merge ktrace-lwp.

branches: 1.17.4;
nuke trailing whitespace

de-__P

branches: 1.15.6; 1.15.14; 1.15.16;
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

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

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: 1.10.8;
add RCSIDs

branches: 1.9.2;
Make compile with -Wmissing-prototype -Wstrict-prototypes

Make this compile with -Wmissing-prototypes by adding appropriate
cdev_decl, bdev_decl, cons_decl

branches: 1.7.26; 1.7.28;
-Wall

Several things:
Clean up the name space here a bit.
Add a `busname' element to struct ofprobe (now struct ofbus_attach_args), and
check against it.
Nuke `ofroot'.
Rename the `openfirm' attribute to `ofbus'.

Update for config changes.

Update for no __BROKEN_INDIRECT_CONFIG.

backout kprintf changes

printf -> kprintf, sprintf -> ksprintf

PowerPC port

In the "i2c-child-devices" array, don't pass in a "cookie" and "cookietype".
Instead, just create the appropriate devhandle and pass that along as a
data object.

As with ACPI, iic_attach() now fetches the child device array directly
in the FDT case. Adjust the OFW case so that we're not forced to indirect
through a dictionary if it's not needed.

branches: 1.1.4; 1.1.6; 1.1.16;
Split the i2c and spi stuff out into their own files.

Add OpenFirmware property information from the September 23, 1996 draft
ISA Bus Bindings document for IEEE Std 1275-1994.

(These definitions also match what the Shark OpenFirmware implementation
uses.)

Use DEVICE_COMPAT_EOL.

Rewrite of_network_decode_media() to use strlist_next() and
device_compatible_lookup().

branches: 1.8.10;
KNF. No functional change.

branches: 1.7.64;
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.)

branches: 1.5.8; 1.5.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.4.70; 1.4.72; 1.4.74;
merge ktrace-lwp.

de-__P

branches: 1.2.16; 1.2.24; 1.2.26;
add RCSIDs

branches: 1.1.26; 1.1.28;
Add common OpenFirmware network interface functions. Currently supports
decoding the `supported-network-types' and `chosen-network-type' properties
into ifmedia words.

u_int32_t -> uint32_t

Remove clause 3 and 4 from TNF licenses

branches: 1.6.70; 1.6.72; 1.6.74;
merge ktrace-lwp.

Typo in comment. From OpenBSD.

branches: 1.4.24;
add OFW_PCI_PHYS_HI_BUS()

expand this a little further to include defines of:
OFW_PCI_PHYS_HI_DEVICE() - extract PCI device from phys_hi
OFW_PCI_PHYS_HI_FUNCTION() - extract PCI function from phys_hi
and the definition of `struct ofw_pci_register'.

branches: 1.2.2; 1.2.6; 1.2.8;
Fix OFW_PCI_PHYS_HI_DEVICEMASK value.

Define some things related to the PCI Bus binding to OpenFirmware.

Change the devhandle_from_*() functions to also take a "super handle",
from which the newly created handle will inherit it's implementation.
The root implementation for a new handle type is used if an invalid
"super handle" is passed.

Adjust the device_call() calling convention so as to provide type checking
of the arguments passed to the call, using auto-generated argument
structures and binding macros.

branches: 1.1.2; 1.1.4;
- Define a device call for PCI bus instances to fetch a direct child's
device handle given the device's device/function #s (extracted from
a pcitag_t). Use it to associate the handle with the child device
at config_found() time.
- Implement this device call for ACPI and OpenFirmware.
- Enable the OpenFirmware variant for evbarm FDT, macppc, ofppc, sparc64.
- Obsolete acpi_device_register(); it is no longer needed.
- Obsolete setting the OpenFirmware handle in PCI devices in the
sparc64 device_register(); it is no longer needed.

Make SPI direct configuration less #ifdef'y. No more checking what kind
of platform device tree; instead, use a device call to enumerate the
direct config children of the bus.

Do the #address-cells dance inside of_copy_spi_devs(), and make calling
it a bit simpler.

Remove pointless containment of SPI device array inside a dictionary
that never gets passed on to anyone.

branches: 1.1.4; 1.1.6; 1.1.16;
Split the i2c and spi stuff out into their own files.

Add a platform device tree passthrough for device properties. First,
the device's properties dictionary is consulted, and if it doesn't have
what we're looking for, we go ask the platform device tree. The upshot
is that we can g/c (or not have to add) code that duplicates values from
the device tree into the properties dictionary (either in something like
device_register() or in a driver attachment front-end -- there are multiple
example of both in the system, currently), and everyone gets to use a
consistent interface (which will, over time, allow more code to de-duplicated).

Implement back-ends for ACPI, Sun OpenBoot, and OpenFirmware (including FDT).

Add a device_register() hook for the platform device tree. For ACPI and
OpenFirmware (including FDT), use this to record the firmware path to
the device in the "device-path" property.

Change the devhandle_from_*() functions to also take a "super handle",
from which the newly created handle will inherit it's implementation.
The root implementation for a new handle type is used if an invalid
"super handle" is passed.

Adjust the device_call() calling convention so as to provide type checking
of the arguments passed to the call, using auto-generated argument
structures and binding macros.

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: 1.57.2;
OpenFirmware device handle implementation.

Split the i2c and spi stuff out into their own files.

G/C of_match_compatible().

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

Replace use of of_match_compatible().

There is not much point in of_compatible() returning -1 for "no match"
and >= 0 for "match". Just make it return 0 for "no match" and >0 for
"match" so it can be treated like a boolean expression.

As such of_match_compatible() (a wrapper around of_compatible()) is now
obsolete, and will be removed once all call sites are converted to an
appropriate replacement.

Minor comment changes.

s/boolean_t/bool/. boolean_t is obsolete (from Mach), and this
also fixes a new build issue in libkvm on sparc*.

Add "cookietype" to i2c attach args, so the consumer knows if ia_cookie
is either an OF phandle or an ACPI_HANDLE. Add NXP0002 compatible mapping
while here.

malloc(9) -> kmem(9)

Rewrite of_compatible() using strlist_match().

Implement of_match_compat_data() using device_compatible_match_strlist().
Implement of_search_compatible() using device_compatible_lookup_strlist().

Update a comment.

Change of_search_compable() to return NULL on no-match, which is much more
sensible than the previous behavior. As such, back out rev 1.7 of
sunxi_sramc.c. All other of_search_compable() call sites have been audited.

update comment to match new reality

Remove "struct of_compat_data" and replace its usage with
"struct device_compatible_entry"; they are ABI-compatible.

Fix several "loses const qualifier" bugs encountered during
this conversion.

add of_getprop_uint32_array()

branches: 1.40.2;
Add of_find_bycompat helper to search a tree for a node by compat string.

Remove !cold KASSERT - it does not compile on all kernels, and it is not the
right thing to test for anyway. XXX should we panic instead? Are "compatible"
strings this long happening in real devices?

Fix fallout from migration from alloca() to malloc() in the previous.

of_compatible() is used at least for macppc in very early boot stage
where malloc() is still not available.

Therefore, for small (<= OFW_MAX_STACK_BUF_SIZE = 256) buffer, use
statically allocated one in the stack. For larger one, we continue to
use malloc() but KASSERT(!cold) is added for sure.

Fix boot failure for macppc reported by martin:
http://mail-index.netbsd.org/port-macppc/2020/06/25/msg002756.html

no need for alloca() in of_compatible(), malloc() is fine

Update for proplib(3) API changes.

Update for proplib(3) API changes.

ofw: add of_enter_spi_devs helper method

For translating OFW child nodes of SPI controller into "spi-child-devices"
property. In similar spirit to the existing of_enter_i2c_devs method.

Set "i2c-indirect-config" to false in the right place so that iic(4)
better behaves itself.

Add of_getprop_uint64

branches: 1.31.2;
In of_enter_i2c_devs(), we no longer need to set a "size" property
for a couple of models of Atmel EEPROMs because the driver can figure
this out on its own now (based on the same "compatible" criteria that
we're using).

branches: 1.30.4;
Add of_match_compat_data.

This routine searches an array of compat_data structures for a
matching "compatible" entry matching the supplied OFW node.

Add of_search_compatible, which searches an array of compat_data structures
for a matching "compatible" entry matching the supplied OFW node. This
allows us to associate data with compatible strings.

branches: 1.28.2;
Rename of_getprop_bool to of_hasprop and make of_getprop_bool an alias.

branches: 1.27.8;
add of_getprop_bool and of_getprop_uint32 helpers

add an addr_shift parameter to of_enter_i2c_devs

OF properties are stored in big endian, but the host might not be. Swap
the value of the "reg" property where appropriate.

Change the meaning of of_compatible return values >= 0. Previously, the
function would return the index of the matching compatibility string in
the "strings" parameter on success. None of the callers in tree use this,
so instead change the function to return a reverse index of the matching
compatibility string in the phandle's "compatible" property. The result is
that the function will return a higher number for earlier "compatible"
matches.

Add a new of_match_compatible() that simply returns of_compatible() + 1,
for use in driver match functions.

branches: 1.23.6;
Add "i2c-at34c02" AT34C02 EEPROM. This is compatible with the AT24C02
EEPROM, apart from software write protection (not supported in our driver).

Add a property "i2c-indirect-config" to allow/disallow i2c indirect config.
If missing, "allowed" is assumed. Set it to false for OFW machines.
Patch from martin@. Removes erroneous i2c probe messages that appeared with
wildcard support.

branches: 1.21.2;
Set the size for EEPROM's that we know about ("i2c-at24c64" is set to 8192).
Allows seeprom(4) to attach correctly, when combined with the direct
configuration support there.

The i2c bus number (0 or 1) is encoded in bit 33 of the register for a node,
but we encode it in bit 8 of i2c_addr_t. If bit 33 is set, unset it and
set bit 9 instead (we later shift by one bit).

Only create the "i2c-child-devices" property if we actually found any
child devices (rather than unconditionally).
Allows indirect config of i2c busses to work (e,g. for Tadpole SPARCle).

branches: 1.18.10; 1.18.20;
Interpret the "reg" property of i2c nodes more liberal, and depending
on the cell size in use.
I have been unable to find any documents about the i2c bindings for OF,
so this is all pretty much voodoo.

Supporting cast for i2c direct configuration on OF machines

branches: 1.16.2;
fix a ref counting leak

add another convenience function - of_get_mode_string() to extract a Sun-like
video mode specifier from output-device

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.

branches: 1.13.18; 1.13.26; 1.13.32;
Add three new MI functions taken from macppc/autoconf.c:
of_getnode_byname(): Finds a node named X
of_to_uint32_prop(): sets an uint32_t prop_t from an OFW property
of_to_dataprop(): sets a data prop_t from an OFW property

These looked more generally useful, and seemed like something other
OFW-capable machines might want to take advantage of.

branches: 1.12.2;
Add a new convenience function, of_find_firstchild_byname(), and apply
some minor KNF to this ofw_subr.c.

branches: 1.11.44; 1.11.46; 1.11.50;
merge ktrace-lwp.

branches: 1.10.4;
nuke trailing whitespace

branches: 1.9.4; 1.9.6;
sprintf -> snprintf

branches: 1.8.2;
compatibility, not compatiblity.

add RCSIDs

branches: 1.6.6; 1.6.8;
Fix doubled 'the's in comments.

branches: 1.5.14;
Forcibly NUL-terminate the path name, just to be sure.

s/of_nodename/of_packagename/. Eventually, we'll probably want something
similar for instances.

add of_nodename(), a function to stuff the last component of a node's
name into a caller-provided buffer (helpful for generating
autoconfiguration output). Also, other minor cleanup.

clean up comments and includes. add an of_compatible() function
which checks for the presence of any of a set of caller-provided
strings in a node's "compatible" property (the _right_ way to
determine driver compatibility).

new file containing common OFW-related routines. Right now just contains
of_decode_int(), a function which decodes OFW integer properties.

branches: 1.2.2;
various fixes:
- don't create hw.ofw if there is no /openprom node
- just copy 'model' and 'version' properties if present instead of reporting
'model' as 'version'...

make OpenFirmware info available via sysctl.ofw
tested on macppc, shark and sparc64

As with ACPI, iic_attach() now fetches the child device array directly
in the FDT case. Adjust the OFW case so that we're not forced to indirect
through a dictionary if it's not needed.

Make SPI direct configuration less #ifdef'y. No more checking what kind
of platform device tree; instead, use a device call to enumerate the
direct config children of the bus.

Do the #address-cells dance inside of_copy_spi_devs(), and make calling
it a bit simpler.

Remove pointless containment of SPI device array inside a dictionary
that never gets passed on to anyone.

Change the devhandle_from_*() functions to also take a "super handle",
from which the newly created handle will inherit it's implementation.
The root implementation for a new handle type is used if an invalid
"super handle" is passed.

branches: 1.47.2; 1.47.12;
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: 1.46.2;
Wrap some definite-only-in-kernel-environment prototypees in _KERNEL.

OpenFirmware device handle implementation.

G/C of_match_compatible().

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

s/boolean_t/bool/. boolean_t is obsolete (from Mach), and this
also fixes a new build issue in libkvm on sparc*.

Remove "struct of_compat_data" and replace its usage with
"struct device_compatible_entry"; they are ABI-compatible.

Fix several "loses const qualifier" bugs encountered during
this conversion.

add of_getprop_uint32_array()

branches: 1.39.2;
Add of_find_bycompat helper to search a tree for a node by compat string.

ofw: add of_enter_spi_devs helper method

For translating OFW child nodes of SPI controller into "spi-child-devices"
property. In similar spirit to the existing of_enter_i2c_devs method.

Add of_getprop_uint64

branches: 1.36.4; 1.36.6;
Add of_match_compat_data.

This routine searches an array of compat_data structures for a
matching "compatible" entry matching the supplied OFW node.

Add of_search_compatible, which searches an array of compat_data structures
for a matching "compatible" entry matching the supplied OFW node. This
allows us to associate data with compatible strings.

branches: 1.34.2;
Rename of_getprop_bool to of_hasprop and make of_getprop_bool an alias.

branches: 1.33.8;
add of_getprop_bool and of_getprop_uint32 helpers

add an addr_shift parameter to of_enter_i2c_devs

Change the meaning of of_compatible return values >= 0. Previously, the
function would return the index of the matching compatibility string in
the "strings" parameter on success. None of the callers in tree use this,
so instead change the function to return a reverse index of the matching
compatibility string in the phandle's "compatible" property. The result is
that the function will return a higher number for earlier "compatible"
matches.

Add a new of_match_compatible() that simply returns of_compatible() + 1,
for use in driver match functions.

branches: 1.30.10;
sort by name, add OF_quiesce

branches: 1.29.10; 1.29.20;
Interpret the "reg" property of i2c nodes more liberal, and depending
on the cell size in use.
I have been unable to find any documents about the i2c bindings for OF,
so this is all pretty much voodoo.

Supporting cast for i2c direct configuration on OF machines

branches: 1.27.2;
add another convenience function - of_get_mode_string() to extract a Sun-like
video mode specifier from output-device

branches: 1.26.10;
Convert many of the uses of __attribute__ to equivalent
__packed, __unused and __dead macros from cdefs.h

branches: 1.25.2; 1.25.6;
Add three new MI functions taken from macppc/autoconf.c:
of_getnode_byname(): Finds a node named X
of_to_uint32_prop(): sets an uint32_t prop_t from an OFW property
of_to_dataprop(): sets a data prop_t from an OFW property

These looked more generally useful, and seemed like something other
OFW-capable machines might want to take advantage of.

branches: 1.24.2;
Add a new convenience function, of_find_firstchild_byname(), and apply
some minor KNF to this ofw_subr.c.

branches: 1.23.18; 1.23.20; 1.23.24;
Unify the declaration of OF_interpret() between sparc{,64} and macppc
by adding the "nargs" argument to the macppc version, and fix the macppc
ports uses of OF_interpret() accordingly.

Also move the declaration of OF_interpt() from macppc's autoconf.h to
ofw/openfirm.h. This fixes the build of the macppc port.

Approved by macallan@.

branches: 1.22.6;
G/c struct ofbus_softc. Last use (in sys/arch/powerpc/powerpc/ofw_machdep.c)
has perished long ago along with vestiges of dk_establish.

branches: 1.21.4; 1.21.8; 1.21.14;
merge ktrace-lwp.

branches: 1.20.2;
sprinkle const.

branches: 1.19.6;
add missing protos.

implement device_register() for ofppc.
use ofcons_cnprobe().

branches: 1.17.2;
Don't use argument names in function declarations.

Rename ofb_softc to ofbus_softc. (XXX Is this good name?)

branches: 1.15.2;
OF_nextprop: make OUT argument type `void *'

Add OF_nextprop and OF_setprop prototypes.

de __P'd.

branches: 1.12.8;
oops, fix previous.

no need to use __P inside __P.

Update last prototyping change.

Make this pass the `strict prototype' test.

Add common OpenFirmware network interface functions. Currently supports
decoding the `supported-network-types' and `chosen-network-type' properties
into ifmedia words.

Several things:
Clean up the name space here a bit.
Add a `busname' element to struct ofprobe (now struct ofbus_attach_args), and
check against it.
Nuke `ofroot'.
Rename the `openfirm' attribute to `ofbus'.

s/of_nodename/of_packagename/. Eventually, we'll probably want something
similar for instances.

add a prototype for of_nodename(), a function to stuff the last
component of a node's name into a caller-provided buffer (helpful
for generating autoconfiguration output).

Prototype OF_getproplen().

prototype of_compatible

clean up for other changes (removal of ofnmmatch(), addition of
of_decode_int()), reorganize.

PowerPC port

revert this change from early this year. it appears the
changes macallan@ commited to fix FIRMWORKSBUGS issues
in openfirmware() have fixed the hangs seen on PegasosII.

hooray!

---
Log Message:
workaround a problem with the pegasos firmware interface:
attempting to use /dev/openfirm on this machine hangs hard.

this isn't a new problem, and i've been meaning to try to
figure it out for years, but it's become a problem since
the xf86-video-radeon driver gained code to look for the
macppc model using this interface.

this is why xorg-server 1.18 and 1.20 hang recently on the
pegasosII.

this change is fairly ugly but i couldn't think of a less
ugly method to avoid /dev/openfirm working just on this
one platform. introduce new __OPENFIRMIO_OPEN_CHECK_BROKEN
macro and associated __openfirmio_open_check_broken(), and
use them in the new openfirmopen() to fail opens.

include proplib.h in macppc and ofppc autoconf.h since they
use it.
---

workaround a problem with the pegasos firmware interface:
attempting to use /dev/openfirm on this machine hangs hard.

this isn't a new problem, and i've been meaning to try to
figure it out for years, but it's become a problem since
the xf86-video-radeon driver gained code to look for the
macppc model using this interface.

this is why xorg-server 1.18 and 1.20 hang recently on the
pegasosII.


this change is fairly ugly but i couldn't think of a less
ugly method to avoid /dev/openfirm working just on this
one platform. introduce new __OPENFIRMIO_OPEN_CHECK_BROKEN
macro and associated __openfirmio_open_check_broken(), and
use them in the new openfirmopen() to fail opens.

include proplib.h in macppc and ofppc autoconf.h since they
use it.

branches: 1.13.26; 1.13.28;
Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.12.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.11.76; 1.11.86; 1.11.92;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

enable ioctl(OFIOCSET) so eeprom can actually change PROM settings on
OpenFirmware machines

branches: 1.9.26;
merge ktrace-lwp.

branches: 1.8.16;
Move UCB-licensed code from 4-clause to 3-clause licence.

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

branches: 1.7.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

'struct proc *' -> 'struct lwp *' as required to get GENERIC for macppc built

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

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: 1.3.8;
add RCSIDs

branches: 1.2.2; 1.2.4; 1.2.6; 1.2.8;
some cleanup. Add back OFIOCGETOPTNODE.

Add openfirmio which is an ioctl interface to OpenFirmware.

More on PR 41200: headers that declare ioctls should include sys/ioccom.h.
This covers (I think) all the MI headers outside of external/ (and dist/).

branches: 1.6.120; 1.6.140;
merge ktrace-lwp.

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

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

branches: 1.4.6;
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: 1.3.2; 1.3.4; 1.3.14;
Add multiple inclusion protection. Define prototypes for openfirm
routines used in cdevsw.

branches: 1.2.2; 1.2.4;
Add OFIOCGETOPTNODE (now that I know how to implement it).

Add openfirmio which is an ioctl interface to OpenFirmware.