<sys/extent.h> not needed here.

Add bounce buffer support for ARM bus_dma(9). Add macros to help initialize
bus_dma_tag structures.

branches: 1.4.2; 1.4.12;
#include <sys/bus.h> instead of <machine/bus.h>.

Switch to a 2 clause license. Approved by joff@ (copyright holder).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91_bus_dma.c was initially added on branch matt-nb4-arm.

Trailing whitespace

use designated initializer to make adaptability and flexibility for changing struct bus_space.
no functional change.

branches: 1.4.52;
#include <sys/bus.h> instead of <machine/bus.h>.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91_bus_space.c was initially added on branch matt-nb4-arm.

fix typos in comments and log messages, mainly s/intrrupt/interrupt/.

malloc(9) -> kmem(9)

branches: 1.11.42;
kill sprintf

branches: 1.10.2;
C99 types

branches: 1.9.2;
Remove irqframe and replace with identical trapframe.

attach event counters later, at attach time. Caught by an assertion

branches: 1.7.2;
#include <sys/bus.h> instead of <machine/bus.h>.

Some more device_t, cfdata_t, CFATTACH_DECL_NEW cleanup.

branches: 1.5.6;
Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

Apply fixes for PR port-arm/43339:
Set proper IPL_SOFTfoo values even in !FAST_SOFTINTS case.
Some assertions in MI code expect they have unique values,
per comments from rmind@.

Also cleanup various "interrupt hierarchy" code since IPL_NONE and
IPL_SOFTfoo should not be set by any hardware interrupt establish functions.

Ok'ed by mrg@, tested on shark and hpcarm.

branches: 1.3.2; 1.3.4;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91aic.c was initially added on branch matt-nb4-arm.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91aicreg.h was initially added on branch matt-nb4-arm.

C99 types

branches: 1.4.2;
Remove irqframe and replace with identical trapframe.

branches: 1.3.12;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91aicvar.h was initially added on branch matt-nb4-arm.

Fix format specifier for physmem from %d to 0x%"PRIxPSIZE" in multiple places.

Should fix VERBOSE_INIT_ARM for various evbarm kernel configs.
Also add 0x prefix in few previously fixed places to improve readability.

Merge thorpej-cfargs2.

branches: 1.28.8;
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: 1.27.4;
PMAP_DEBUG has been deleted on arm

Trailing whitespace

branches: 1.25.8;
Consistently use vaddr_t as initarm and friends return type.

Makes no difference to binaries except for aarch64 where it's required

KNF

Fix a commit

Centralise defparam CONSADDR, CONSPEED, CONMODE and CONADDR into
opt_console.h and adjust.

Sprinkle #include "opt_arm_debug.h" where VERBOSE_INIT_ARM is used

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

ok kamil christos

branches: 1.19.14; 1.19.16;
switch all ports to use uvm_init.c:uvm_md_init()

uvm_setpagesize() is now subsumed within this funciton.

branches: 1.18.2; 1.18.4;
Replace more vm_offset_t, vm_size_t with vaddr_t, vsize_t
Use paddr_t for msgbufphys

<arm/locore.h> fallout (fixes some include ordering errors)

branches: 1.16.2;
C99 types

add missing arg to cpu_setttb().

branches: 1.14.2;
Move things around for <arm/arm32/machdep.h>

More -fno-common fixes

add preliminary support for AT91SAM9260

branches: 1.11.2;
#include <sys/bus.h> instead of <machine/bus.h>.

Use cpu_* prefix to call cpu_* functions (setttb() -> cpu_setttb()); no
functional changes.

- Use uvm_lwp_setuarea() instead of directly setting address to lwp_t::l_addr.
- Replace most remaining uses of l_addr with uvm_lwp_getuarea() or lwp_getpcb().
- Amend assembly in ports where it accesses PCB via struct user.
- Rename L_ADDR to L_PCB in few places. Reduce sys/user.h inclusions.

Kill proc0paddr. Use lwp0.l_addr instead.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

Remove all declarations of physmem from sys/arch. Add an include of
<sys/systm.h> to the one file that did not already contain it.
This now means that physmem can be changed by updating systm.h and uvm_page.c
(excluding fixing printfs)

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: 1.4.4;
As discussed on tech-kern: mutex_init is too heavyweight for early bootstrap
phases, so move the initialization of the ksyms mutex back into main via
a function called ksyms_init. Rename the existing (but quite different)
ksyms_init* variations into ksyms_addsyms_elf() and ksyms_addsyms_explicit()
and adapt machdep code accordingly.

Remove LKMs and switch to the module framework, pass 1.

Proposed on tech-kern@.

branches: 1.2.2; 1.2.4; 1.2.6;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91bus.c was initially added on branch matt-nb4-arm.

Trailing whitespace

Consistently use vaddr_t as initarm and friends return type.

Makes no difference to binaries except for aarch64 where it's required

branches: 1.6.38;
C99 types

branches: 1.5.2;
Remove irqframe and replace with identical trapframe.

branches: 1.4.2;
#include <sys/bus.h> instead of <machine/bus.h>.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91busvar.h was initially added on branch matt-nb4-arm.

malloc -> kmem

Merge thorpej-cfargs2.

branches: 1.6.8;
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: 1.5.10;
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: 1.4.54;
Don't set the iobase and iosize members of pcmciabus_attach_args because
they're not used in any meaningful way.

#include <sys/bus.h> instead of <machine/bus.h>.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91cf.c was initially added on branch matt-nb4-arm.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91cfvar.h was initially added on branch matt-nb4-arm.

ddb/db_active.h: New home for extern db_active.

This can be included unconditionally, and db_active can then be
queried unconditionally; if DDB is not in the kernel, then db_active
is a constant zero. Reduces need for #include opt_ddb.h, #ifdef DDB.

malloc(9) -> kmem(9)

branches: 1.17.8;
Remove clause 3 and 4 leftovers from TNF licenses in more sources.

Confirmed by martin@ in PR/54760.

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: 1.15.2; 1.15.8; 1.15.18; 1.15.22;
Deal with unused variable warnings

MD rnd.h cleanups. Please let me know if I broke anything!

branches: 1.13.2;
centralize the call unit / dialout macros

Merge tls-earlyentropy branch into HEAD.

Add d_discard to all struct cdevsw instances I could find.

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

branches: 1.10.2;
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: 1.9.2;
C99 types

branches: 1.8.6;
Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.

branches: 1.7.4;
use CFATTACH_DECL_NEW

branches: 1.6.2;
#include <sys/bus.h> instead of <machine/bus.h>.

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

branches: 1.4.2;
Misc fixes to get this to compile again.

branches: 1.3.2; 1.3.4;
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: 1.2.4; 1.2.6; 1.2.12;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91dbgu.c was initially added on branch matt-nb4-arm.

C99 types

branches: 1.4.10;
fix AT91SAM9260 chip id

branches: 1.3.12;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91dbgureg.h was initially added on branch matt-nb4-arm.

Include <sys/rndsource.h> where it is actually used.

I had removed <sys/rnd.h> from files that didn't mention anything of
the rnd(9) API. But they included other files which assumed
<sys/rnd.h> had already been included.

branches: 1.5.6; 1.5.24;
Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.

branches: 1.4.2;
First step of random number subsystem rework described in
<20111022023242.BA26F14A158@mail.netbsd.org>. This change includes
the following:

An initial cleanup and minor reorganization of the entropy pool
code in sys/dev/rnd.c and sys/dev/rndpool.c. Several bugs are
fixed. Some effort is made to accumulate entropy more quickly at
boot time.

A generic interface, "rndsink", is added, for stream generators to
request that they be re-keyed with good quality entropy from the pool
as soon as it is available.

The arc4random()/arc4randbytes() implementation in libkern is
adjusted to use the rndsink interface for rekeying, which helps
address the problem of low-quality keys at boot time.

An implementation of the FIPS 140-2 statistical tests for random
number generator quality is provided (libkern/rngtest.c). This
is based on Greg Rose's implementation from Qualcomm.

A new random stream generator, nist_ctr_drbg, is provided. It is
based on an implementation of the NIST SP800-90 CTR_DRBG by
Henric Jungheim. This generator users AES in a modified counter
mode to generate a backtracking-resistant random stream.

An abstraction layer, "cprng", is provided for in-kernel consumers
of randomness. The arc4random/arc4randbytes API is deprecated for
in-kernel use. It is replaced by "cprng_strong". The current
cprng_fast implementation wraps the existing arc4random
implementation. The current cprng_strong implementation wraps the
new CTR_DRBG implementation. Both interfaces are rekeyed from
the entropy pool automatically at intervals justifiable from best
current cryptographic practice.

In some quick tests, cprng_fast() is about the same speed as
the old arc4randbytes(), and cprng_strong() is about 20% faster
than rnd_extract_data(). Performance is expected to improve.

The AES code in src/crypto/rijndael is no longer an optional
kernel component, as it is required by cprng_strong, which is
not an optional kernel component.

The entropy pool output is subjected to the rngtest tests at
startup time; if it fails, the system will reboot. There is
approximately a 3/10000 chance of a false positive from these
tests. Entropy pool _input_ from hardware random numbers is
subjected to the rngtest tests at attach time, as well as the
FIPS continuous-output test, to detect bad or stuck hardware
RNGs; if any are detected, they are detached, but the system
continues to run.

A problem with rndctl(8) is fixed -- datastructures with
pointers in arrays are no longer passed to userspace (this
was not a security problem, but rather a major issue for
compat32). A new kernel will require a new rndctl.

The sysctl kern.arandom() and kern.urandom() nodes are hooked
up to the new generators, but the /dev/*random pseudodevices
are not, yet.

Manual pages for the new kernel interfaces are forthcoming.

branches: 1.3.12;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91dbguvar.h was initially added on branch matt-nb4-arm.

Add a shared function to query the common properties used for configuring
an Ethernet address.

sys: Drop redundant NULL check before m_freem(9)

m_freem(9) safely has accepted NULL argument at least since 4.2BSD:
https://www.tuhs.org/cgi-bin/utree.pl?file=4.2BSD/usr/src/sys/sys/uipc_mbuf.c

Compile-tested on amd64/ALL.

Suggested by knakahara@

branches: 1.35.10;
Remove unnecessary sys/malloc.h include

Eliminate use of IFF_OACTIVE.

Remove unnecessary duplicate bit define in mask

PR port-arm/50687

When a media change is requested, don't just all (*if_init)(). That's
needlessly disruptive and incompatible with future locking changes.
We can use both ether_mediachange() and ether_mediastatus() instead.

More <net/if_stats.h>

Adopt <net/if_stats.h>

branches: 1.29.4;
Use ETHER_LOCK()/ETHER_UNLOCK() for all ethernet drivers to protect ec_multi*.

- Fix compile error (remove unused variable).
- KNF.
- ac -> ec
- Remove extra RCS Id.

Whitespace fix (mainly tabify).

No functional change:
- Simplify MII structure initialization and reference.
- u_int*_t -> uint*_t.
- KNF

On drivers which use MII(4) and have hook SIOC[GS]IFMEDIA which just pass to
ifmedia_ioctl(), the hook is not required because ether_ioctl has it
(if_ethersubr.c rev. 1.160). These drivers don't return ENETRESET in
ifmedia_ioctl(), so no functional change.

Remove very old IFF_NOTRAILERS flag.

Change MII PHY read/write API from:

int (*mii_readreg_t)(device_t, int, int);
void (*mii_writereg_t)(device_t, int, int, int);
to:

int (*mii_readreg_t)(device_t, int, int, uint16_t *);
int (*mii_writereg_t)(device_t, int, int, uint16_t);

Now we can test if a read/write operation failed or not by the return value.

In 802.3 spec says that the PHY shall not respond to read/write transaction
to the unimplemented register(22.2.4.3). Detecting timeout can be used to
check whether a register is implemented or not (if the register conforms to
the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR.

Note that I noticed that the following code do infinite loop in the
read/wirte function. If it accesses unimplemented PHY register, it will hang.
It should be fixed:

arm/at91/at91emac.c
arm/ep93xx/epe.c
arm/omap/omapl1x_emac.c
mips/ralink/ralink_eth.c
arch/powerpc/booke/dev/pq3etsec.c(read)
dev/cadence/if_cemac.c <- hkenken
dev/ic/lan9118.c


Tested with the following device:

axe+ukphy
axe+rgephy
axen+rgephy (tested by Andrius V)
wm+atphy
wm+ukphy
wm+igphy
wm+ihphy
wm+makphy
sk+makphy
sk+brgphy
sk+gentbi
msk+makphy
sip+icsphy
sip+ukphy
re+rgephy
bge+brgphy
bnx+brgphy
gsip+gphyter
rtk+rlphy
fxp+inphy (tested by Andrius V)
tlp+acphy
ex+exphy
epic+qsphy
vge+ciphy (tested by Andrius V)
vr+ukphy (tested by Andrius V)
vte+ukphy (tested by Andrius V)

Not tested (MAC):
arm:at91emac
arm:cemac
arm:epe
arm:geminigmac
arm:enet
arm:cpsw
arm:emac(omac)
arm:emac(sunxi)
arm:npe
evbppc:temac
macppc:bm
macppc:gm
mips:aumac
mips:ae
mips:cnmac
mips:reth
mips:sbmac
playstation2:smap
powerpc:tsec
powerpc:emac(ibm4xx)
sgimips:mec
sparc:be
sf
ne(ax88190, dl10019)
awge
ep
gem
hme
smsh
mtd
sm
age
alc
ale
bce
cas
et
jme
lii
nfe
pcn
ste
stge
tl
xi
aue
mue
smsc
udav
url

Not tested (PHY):
amhphy
bmtphy
dmphy
etphy
glxtphy
ikphy
iophy
lxtphy
nsphyter
pnaphy
rdcphy
sqphy
tlphy
tqphy
urlphy

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

ok kamil christos

branches: 1.21.2;
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: 1.19.6; 1.19.12;
Apply deferred if_start to more drivers...

branches: 1.18.2;
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

branches: 1.17.2;
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!

Deal with unused variable warnings

Remove leftover use of AF_NS and NS option

Unnecessary NETISR_NS is also removed.

branches: 1.13.14;
C99 types

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

branches: 1.11.2;
Fix mii_statchg to take a 'struct ifnet *' instead of device_t. This fixes
problem with a common MDIO bus used for multiple interfaces.
Some drivers converted to CFATTACL_DECL_NEW.

branches: 1.10.2;
#include <sys/bus.h> instead of <machine/bus.h>.

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: 1.8.2; 1.8.4;
Unify the name of the device property to hold a MAC address - there was
no clear majority for either "mac-addr" vs. "mac-address", but a quick
gallup poll among developers selected the latter.

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.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

bzero -> memset

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: 1.2.4; 1.2.6; 1.2.12;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91emac.c was initially added on branch matt-nb4-arm.

C99 types

branches: 1.3.12; 1.3.22;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91emacreg.h was initially added on branch matt-nb4-arm.

Eliminate use of IFF_OACTIVE.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91emacvar.h was initially added on branch matt-nb4-arm.

_setsoftintr is long dead. reap any leftovers from arm.

branches: 1.3.12; 1.3.22; 1.3.26;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91intr.h was initially added on branch matt-nb4-arm.

Merge thorpej-cfargs2.

branches: 1.8.8;
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: 1.7.16;
Stop potential misuse of vendor names and USB vendor IDs in root hub
device and string descriptors.

Firstly: Few vendors have identical PCI-SIG vendor IDs and USB-IF vendor
IDs. As such, using the PCI vendor ID as a USB vendor ID may trample
on whomever is allocated that USB vendor ID.

Secondly: The vendor of the host controller hardware implementation has
little to nothing to do with our usbroothub implementation. Thus we
should not potentially associate any problems therewith to such third
party.

This change will result in root hubs being identified by USB Vendor ID
0x0000. Root hub vendor string will now be "NetBSD" (or, specifically:
ostype). Product ID (0x0000) and product strings remain unchanged.

branches: 1.6.16;
Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix

branches: 1.5.10; 1.5.26; 1.5.28; 1.5.32;
. fix attach code
. use CFATTACH_DECL_NEW

branches: 1.4.2;
#include <sys/bus.h> instead of <machine/bus.h>.

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: 1.2.4; 1.2.6; 1.2.12;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91ohci.c was initially added on branch matt-nb4-arm.

#include <sys/bus.h> instead of <machine/bus.h>.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pdc.c was initially added on branch matt-nb4-arm.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pdcreg.h was initially added on branch matt-nb4-arm.

C99 types

branches: 1.2.4; 1.2.32; 1.2.42;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pdcvar.h was initially added on branch matt-nb4-arm.

Merge thorpej-cfargs2.

branches: 1.7.8;
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: 1.6.52;
C99 types

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

branches: 1.4.2; 1.4.12;
#include <sys/bus.h> instead of <machine/bus.h>.

Misc fixes to get this to compile again.

branches: 1.2.4; 1.2.18; 1.2.20;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pio.c was initially added on branch matt-nb4-arm.

few more typos in the word "register", mainly s/resister/register/.
In one comment I assume that it was meant to be pull-up resistor.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pioreg.h was initially added on branch matt-nb4-arm.

Fix few typos in comments.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91piovar.h was initially added on branch matt-nb4-arm.

0x%#x --> %#x for non-external codes.
Also, stop mixing up 0x%x and %#x in single files as far as possible.

branches: 1.7.6;
Fix CVS Id usage

branches: 1.6.38;
C99 types

branches: 1.5.10;
switch USB port on

branches: 1.4.2;
#include <sys/bus.h> instead of <machine/bus.h>.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pmc.c was initially added on branch matt-nb4-arm.

add preliminary support for AT91SAM9260

branches: 1.2.4; 1.2.32;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pmcreg.h was initially added on branch matt-nb4-arm.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91pmcvar.h was initially added on branch matt-nb4-arm.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91reg.h was initially added on branch matt-nb4-arm.

More devmap updates

Trailing whitespace

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91rm9200bus.c was initially added on branch matt-nb4-arm.

More -fno-common fixes

branches: 1.3.12;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91rm9200busvar.h was initially added on branch matt-nb4-arm.

some love to double letters (in comments).

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91rm9200reg.h was initially added on branch matt-nb4-arm.

Trailing whitespace

branches: 1.1.2;
add preliminary support for AT91SAM9260

branches: 1.1.2;
add preliminary support for AT91SAM9260

some love to double letters (in comments).

branches: 1.1.2;
add preliminary support for AT91SAM9260

More devmap updates

Trailing whitespace

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91sam9261bus.c was initially added on branch matt-nb4-arm.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91sam9261busvar.h was initially added on branch matt-nb4-arm.

some love to double letters (in comments).

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91sam9261reg.h was initially added on branch matt-nb4-arm.

Encapsulate what's needed to attach a SPI bus into a spibus_attach()
inline.

branches: 1.7.2;
Merge thorpej-cfargs2.

branches: 1.6.2; 1.6.8;
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: 1.5.10;
s/transfered/transferred/

ensure spibus_attach_args is zero'ed

branches: 1.3.54;
#include <sys/bus.h> instead of <machine/bus.h>.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91spi.c was initially added on branch matt-nb4-arm.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91spireg.h was initially added on branch matt-nb4-arm.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91spivar.h was initially added on branch matt-nb4-arm.

hardclock_ticks -> getticks()

C99 types

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

branches: 1.4.2; 1.4.12;
#include <sys/bus.h> instead of <machine/bus.h>.

Drop 3rd and 4th clauses. Approved by all copyright holders
(Embedtronics Oy's owners, Jon Sevy, and joff).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91st.c was initially added on branch matt-nb4-arm.

C99 types

branches: 1.3.12; 1.3.22;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91streg.h was initially added on branch matt-nb4-arm.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91tcreg.h was initially added on branch matt-nb4-arm.

hardclock_ticks -> getticks()

For struct timecounter, use C99 initializers.
Compile tested. No functional changes intended.

C99 types

branches: 1.6.10;
make compile by disabling yet more things

branches: 1.5.2;
#include <sys/bus.h> instead of <machine/bus.h>.

Misc fixes to get this to compile again.

branches: 1.3.2; 1.3.4;
Drop 3rd and 4th clauses. Approved by all copyright holders
(Embedtronics Oy's owners, Jon Sevy, and joff).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91tctmr.c was initially added on branch matt-nb4-arm.

Encapsulate what's needed to attach an I2C bus into a iicbus_attach()
inline.

Merge thorpej-cfargs2.

branches: 1.9.8;
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: 1.8.10;
Cleanup i2c bus acquire / release, centralizing all of the logic into
iic_acquire_bus() / iic_release_bus(). "acquire" and "release" hooks
no longer need to be provided by back-end controller drivers (only if
they need special handling, e.g. powering on the i2c controller).
This results in the removal of a bunch of rendundant code from each
back-end controller driver.

Assert that we are not in hard interrupt context in iic_acquire_bus(),
iic_exec(), and iic_release_bus().

branches: 1.7.18;
zero the i2c_attach_args structure before filling it in.
fixes occasional crashes in iic_attach().

branches: 1.6.14;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.5.2; 1.5.12;
#include <sys/bus.h> instead of <machine/bus.h>.

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: 1.2.4; 1.2.6; 1.2.12;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91twi.c was initially added on branch matt-nb4-arm.

s/hodling/holding/ in comment.

branches: 1.3.6;
s/Registre/Register/ in comment.

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91twireg.h was initially added on branch matt-nb4-arm.

Cleanup i2c bus acquire / release, centralizing all of the logic into
iic_acquire_bus() / iic_release_bus(). "acquire" and "release" hooks
no longer need to be provided by back-end controller drivers (only if
they need special handling, e.g. powering on the i2c controller).
This results in the removal of a bunch of rendundant code from each
back-end controller driver.

Assert that we are not in hard interrupt context in iic_acquire_bus(),
iic_exec(), and iic_release_bus().

branches: 1.2.4; 1.2.86;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91twivar.h was initially added on branch matt-nb4-arm.

ddb/db_active.h: New home for extern db_active.

This can be included unconditionally, and db_active can then be
queried unconditionally; if DDB is not in the kernel, then db_active
is a constant zero. Reduces need for #include opt_ddb.h, #ifdef DDB.

branches: 1.13.2; 1.13.8;
MD rnd.h cleanups. Please let me know if I broke anything!

branches: 1.12.2;
centralize the call unit / dialout macros

Merge tls-earlyentropy branch into HEAD.

Add d_discard to all struct cdevsw instances I could find.

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

branches: 1.9.2;
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: 1.8.2;
C99 types

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

branches: 1.6.6;
Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.

branches: 1.5.2; 1.5.6;
#include <sys/bus.h> instead of <machine/bus.h>.

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

branches: 1.3.4; 1.3.6;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91usart.c was initially added on branch matt-nb4-arm.

s/Errorrs/Errors/

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91usartreg.h was initially added on branch matt-nb4-arm.

Include <sys/rndsource.h> where it is actually used.

I had removed <sys/rnd.h> from files that didn't mention anything of
the rnd(9) API. But they included other files which assumed
<sys/rnd.h> had already been included.

branches: 1.6.14;
C99 types

branches: 1.5.6;
Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.

branches: 1.4.2;
First step of random number subsystem rework described in
<20111022023242.BA26F14A158@mail.netbsd.org>. This change includes
the following:

An initial cleanup and minor reorganization of the entropy pool
code in sys/dev/rnd.c and sys/dev/rndpool.c. Several bugs are
fixed. Some effort is made to accumulate entropy more quickly at
boot time.

A generic interface, "rndsink", is added, for stream generators to
request that they be re-keyed with good quality entropy from the pool
as soon as it is available.

The arc4random()/arc4randbytes() implementation in libkern is
adjusted to use the rndsink interface for rekeying, which helps
address the problem of low-quality keys at boot time.

An implementation of the FIPS 140-2 statistical tests for random
number generator quality is provided (libkern/rngtest.c). This
is based on Greg Rose's implementation from Qualcomm.

A new random stream generator, nist_ctr_drbg, is provided. It is
based on an implementation of the NIST SP800-90 CTR_DRBG by
Henric Jungheim. This generator users AES in a modified counter
mode to generate a backtracking-resistant random stream.

An abstraction layer, "cprng", is provided for in-kernel consumers
of randomness. The arc4random/arc4randbytes API is deprecated for
in-kernel use. It is replaced by "cprng_strong". The current
cprng_fast implementation wraps the existing arc4random
implementation. The current cprng_strong implementation wraps the
new CTR_DRBG implementation. Both interfaces are rekeyed from
the entropy pool automatically at intervals justifiable from best
current cryptographic practice.

In some quick tests, cprng_fast() is about the same speed as
the old arc4randbytes(), and cprng_strong() is about 20% faster
than rnd_extract_data(). Performance is expected to improve.

The AES code in src/crypto/rijndael is no longer an optional
kernel component, as it is required by cprng_strong, which is
not an optional kernel component.

The entropy pool output is subjected to the rngtest tests at
startup time; if it fails, the system will reboot. There is
approximately a 3/10000 chance of a false positive from these
tests. Entropy pool _input_ from hardware random numbers is
subjected to the rngtest tests at attach time, as well as the
FIPS continuous-output test, to detect bad or stuck hardware
RNGs; if any are detected, they are detached, but the system
continues to run.

A problem with rndctl(8) is fixed -- datastructures with
pointers in arrays are no longer passed to userspace (this
was not a security problem, but rather a major issue for
compat32). A new kernel will require a new rndctl.

The sysctl kern.arandom() and kern.urandom() nodes are hooked
up to the new generators, but the /dev/*random pseudodevices
are not, yet.

Manual pages for the new kernel interfaces are forthcoming.

branches: 1.3.12;
Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91usartvar.h was initially added on branch matt-nb4-arm.

Drop 3rd and 4th clauses. Approved by all copyright holders:
joff and Embedtronics Oy's owners (Jukka Marin and Sami Kantoluoto).

branches: 1.2.4;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file at91var.h was initially added on branch matt-nb4-arm.

add preliminary support for AT91SAM9260

branches: 1.2.4; 1.2.32;
Add AT91 support. (XXX need to finish timecounter support).

branches: 1.1.2; 1.1.16; 1.1.20; 1.1.22;
file files.at91 was initially added on branch matt-nb4-arm.