branches: 1.1.2;
rename panel to button.

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits in arcemu
- Sprinkle MACH_SGI_IP6 as necessary
- Enable IP6/IP10 devices in GENERIC32_IP12. Yes, the naming is poor but
there's no winning with kernel/hw compatibility on sgimips...

Tested on my 4D/25. Doesn't (appear to) break macallan@'s IP22.

branches: 1.2.78; 1.2.86; 1.2.92;
merge ktrace-lwp.

branches: 1.1.4;
Register definitions for National Semiconductor DP8573A RTC. Code originally
from Steve Rumble, with modifications by myself.

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits in arcemu
- Sprinkle MACH_SGI_IP6 as necessary
- Enable IP6/IP10 devices in GENERIC32_IP12. Yes, the naming is poor but
there's no winning with kernel/hw compatibility on sgimips...

Tested on my 4D/25. Doesn't (appear to) break macallan@'s IP22.

branches: 1.3.60; 1.3.68; 1.3.74;
Switch sgimips to MI todr.

branches: 1.2.4; 1.2.8;
merge ktrace-lwp.

branches: 1.1.4; 1.1.18;
Add dpclock driver (and minimal hpc1 goo) for ip20. Code originally
from Steve Rumble, with modifications by myself.

O2 RTC attachment, based on code from Antti Kantee.

* Clean up HPC autoconfiguration a little. Pass device register and
DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.

branches: 1.1.2; 1.1.8;
Support for the Dallas 1286 clock found on the Indigo2 and Indy.

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits in arcemu
- Sprinkle MACH_SGI_IP6 as necessary
- Enable IP6/IP10 devices in GENERIC32_IP12. Yes, the naming is poor but
there's no winning with kernel/hw compatibility on sgimips...

Tested on my 4D/25. Doesn't (appear to) break macallan@'s IP22.

branches: 1.10.60; 1.10.68; 1.10.74;
Switch sgimips to MI todr.

branches: 1.9.4; 1.9.8;
merge ktrace-lwp.

branches: 1.8.16;
__KERNEL_RCSID()

branches: 1.7.2;
Change DS1286 definitions to start with DS1286_ rather than DS_ so these and
DS1687 definitions are easier to distinguish.

Use CFATTACH_DECL().

Declare all cfattach structures const.

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

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

make RTC year IRIX semantics adjustments a macro

branches: 1.1.2; 1.1.4;
O2 RTC attachment, based on code from Antti Kantee.

Merge isaki-audio2 branch, the overhaul of audio subsystem.
- Interrupt-oriented system rather than thread-oriented.
- Improve stability, quality and performance.
- Split playback and record cleanly. Improve halfduplex support.
- Many bugs are fixed including deadlocks, resource leaks, abuses, etc.
- Simplify audio filter mechanism. The encoding/channels/frequency
conversions are completely handled in the upper layer. So the hard-
ware driver only converts its hardware encoding (if necessary).
- audio_hw_if changes:
- Obsoletes query_encoding and add query_format instead.
- Obsoletes set_params and add set_format instead.
- Remove drain, setfd, mappage.
- The call sequences are changed.
- ioctl AUDIO_GETFD/SETFD, AUDIO_GETCHAN/SETCHAN are obsoleted.
- ioctl AUDIO_{QUERY,GET,SET}FORMAT are introduced.
- cleanup config attributes: au*conv and mulaw.
- All hardware drivers should follow it (I've done as much as possible).

Some file paths are changed:
- dev/audio.c -> dev/audio/audio.c (rewritten)
- dev/audiovar.h -> dev/audio/audiovar.h
- dev/audio_dai.h -> dev/audio/audio_dai.h
- dev/audio_if.h -> dev/audio/audio_if.h
- dev/audiobell.c -> dev/audio/audiobell.c
- dev/audiobellvar.h -> dev/audio/audiobellvar.h
- dev/mulaw.[ch] -> dev/audio/mulaw.[ch] + dev/audio/alaw.c

branches: 1.16.2; 1.16.4;
rename panel to button.

rename "panel" to "button" to avoid conflict with fdt

branches: 1.14.62;
add a driver for the Indy's front panel buttons.
- power button presses are reported to sysmon
- volume control buttons are reported to PMF
TODO: add better key repeat code. The hardware keeps firing interrupts at us
whenever a button is down and not on - say - status change. If we don't clear
the interrupt we'll be fired on until someone clears it. We should probably
disable the entire interrupt and occasionally poll for button release.

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits in arcemu
- Sprinkle MACH_SGI_IP6 as necessary
- Enable IP6/IP10 devices in GENERIC32_IP12. Yes, the naming is poor but
there's no winning with kernel/hw compatibility on sgimips...

Tested on my 4D/25. Doesn't (appear to) break macallan@'s IP22.

branches: 1.12.60; 1.12.68; 1.12.70; 1.12.74; 1.12.78;
Remove obsolete "sbic" define.

Move the sgimips "sbic" driver from arch/sgimips/hpc/sbic.c to
dev/ic/wd33c93.c. This may not be the best WD33C93 driver we've
got, but it's the most recently worked on and probably the most
portable, so it seems like a good basis for further work (and in
particular an acorn26 driver for the Acorn SCSI card). There's
no functional change in this commit, and sgimips kernels still
compile.

branches: 1.10.4; 1.10.8;
Added support for the IP22 IOC's parallel port (PI1).

Code contributed by Joe Britt.

Reviewed by <sekiya> and <kurahone>.

merge ktrace-lwp.

branches: 1.8.16;
Add dpclock driver (and minimal hpc1 goo) for ip20.

Compile dsclock_hpc.c only if dsclock is present in config file.

Allow kernels without the haltwo driver configured to build, i.e.
make the driver optional by adding the haltwo attribute.

Support for HAL2 audio controller attached to the HPC ASIC, found on SGI Indy.

The driver is not too heavily tested and only supports audio playback and
master volume setting currently.

branches: 1.4.12;
Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

Adjust for dsclock name change.

branches: 1.2.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

branches: 1.1.2;
Autoconfiguration glue for HPC devices.

From Rafal K. Boni.

Make it compilable even with debug option.

Merge isaki-audio2 branch, the overhaul of audio subsystem.
- Interrupt-oriented system rather than thread-oriented.
- Improve stability, quality and performance.
- Split playback and record cleanly. Improve halfduplex support.
- Many bugs are fixed including deadlocks, resource leaks, abuses, etc.
- Simplify audio filter mechanism. The encoding/channels/frequency
conversions are completely handled in the upper layer. So the hard-
ware driver only converts its hardware encoding (if necessary).
- audio_hw_if changes:
- Obsoletes query_encoding and add query_format instead.
- Obsoletes set_params and add set_format instead.
- Remove drain, setfd, mappage.
- The call sequences are changed.
- ioctl AUDIO_GETFD/SETFD, AUDIO_GETCHAN/SETCHAN are obsoleted.
- ioctl AUDIO_{QUERY,GET,SET}FORMAT are introduced.
- cleanup config attributes: au*conv and mulaw.
- All hardware drivers should follow it (I've done as much as possible).

Some file paths are changed:
- dev/audio.c -> dev/audio/audio.c (rewritten)
- dev/audiovar.h -> dev/audio/audiovar.h
- dev/audio_dai.h -> dev/audio/audio_dai.h
- dev/audio_if.h -> dev/audio/audio_if.h
- dev/audiobell.c -> dev/audio/audiobell.c
- dev/audiobellvar.h -> dev/audio/audiobellvar.h
- dev/mulaw.[ch] -> dev/audio/mulaw.[ch] + dev/audio/alaw.c

branches: 1.24.2;
Use C99 style struct initializer to audio_hw_if.

branches: 1.23.10;
remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.

branches: 1.22.8; 1.22.26;
put back IPL_AUDIO and splaudio(), at the request of rmind. they are
aliases and now we can easily revert audio to IPL_VM if necessary,
without having to revert the whole branch.

Merge jmcneill-audiomp3 branch, which is derived from ad-audiomp2. From
the original ad-audiomp branch notes:

Add MP locking to the audio drivers.

Making the audio drivers MP safe is necessary before efforts
can be made to make the VM system MP safe.

The are two locks per device instance, an ISR lock and
a character device lock. The ISR lock replaces calls to
splaudio()/splx(), and will be held across calls to device
methods which were called at splaudio() before (e.g.
trigger_output). The character device lock is held across
calls to nearly all of the methods, excluding some only
used for initialization, e.g. get_locks.

Welcome to 5.99.57.

branches: 1.20.2; 1.20.4;
#include <sys/bus.h> instead of <machine/bus.h>.

Split device_t/softc. Tested on Indy.

u_intNN_t -> uintNN_t

branches: 1.17.4; 1.17.6; 1.17.8;
Replace shutdownhook_establish(9) (which was added by me)
with pmf_device_register1(9).

set delta value for the mixer's master channel

branches: 1.15.4; 1.15.12;
Pacify haltwo audio on shutdown hook to avoid noise on poweroff.

branches: 1.14.16; 1.14.20; 1.14.22; 1.14.26;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.13.6;
After move to 64-bit paddr_t, cast via vaddr_t before casting to void*.
OK'ed by macallan@.

branches: 1.12.2; 1.12.10; 1.12.12; 1.12.14;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.11.2;
IP12 (and perhaps other systems) appear to be buggy and incapable of
reliably supporting badaddr(). False negatives appear to occur
approximately 1.8 percent of the time, although neither false positives
nor consecutive false negatives occur. We take advantage of the latter
property and always use a wrapper that makes multiple checks.

My IP12 no longer sees occasional ghost devices and related panics during
boot.

branches: 1.10.2;
Check the haltwo hardware present bit in the match function, rather than
in the attach function after we've thwacked several registers and
potentially wedged the machine. This fixes booting on Challenge S systems
and addresses PR 25202.

Consequently, re-enable haltwo in the default kernel configuration.

Many thanks to George Harvey for testing and feedback.

branches: 1.9.4; 1.9.8; 1.9.18;
merge ktrace-lwp.

branches: 1.8.2; 1.8.4;
Attempt to verify presence of haltwo hardware, rather than just blithely
believing that all hpc3 have a haltwo. This should help Challenge-S owners.

branches: 1.7.2; 1.7.4;
ansify and KNF

merge kent-audio1 branch, which introduces audio filter pipeline to the MI
audio framework


Summary of changes:

* struct audio_params
- remove sw_code, factor, factor_denom, hw_sample_rate,
hw_encoding ,hw_precision, and hw_channels. Conversion information
is conveyed by stream_filter_list_t.
- change the type of sample_rate: u_long -> u_int
- add `validbits,' which represents the valid data size in
precision bits. It is required in order to distinguish 24/32bit
from 24/24bit or 32/32bit.

* audio_hw_if
- add two parameters to set_params()
stream_filter_list_t *pfil, stream_filter_list *rfil
A HW driver should set filter recipes for requested formats
- constify audio_params parameters of trigger_output() and
trigger_input(). They represent audio formats for the hardware.
- make open() and close() optional
- add int (AUMODE_PLAY or AUMODE_RECORD) and audio_params_t parameters
to round_blocksize()

* sw_code is replaced with stream_filter_t.
stream_filer_t converts audio data in an input buffer and writes
into another output buffer unlike sw_code, which converts data in
single buffer.
converters in dev/auconv.c, dev/mulaw.c, dev/aurateconv.c,
dev/tc/bba.c, dev/ic/msm6258.c, and arch/arm/iomd/vidcaudio.c are
reimplemented as stream_filter_t

* MI audio
- audiosetinfo() builds filter pipelines from stream_filter_list_t
filled by audio_hw_if::set_params()
- audiosetinfo() returns with EINVAL if mmapped and set_params()
requests filters
- audio_write(), audio_pint(), and audio_rint() invoke a filter
pipeline.
- ioctl() for FIONREAD, AUDIO_WSEEK, AUDIO_GETIOFFS,
AUDIO_GETOOFFS, and audio_prinfo::{seek,samples} for
AUDIO_GETINFO handle values for a buffer nearest to userland.

* add `struct device *' parameter to ac97_attach()

* all of audio HW drivers follow audio_hw_if and ac97 changes

Prepend HPC3 macros universally with "HPC3_" to distinctly recognise
the corresponding revision and maintain consistency with HPC1.

No functional change intended.

branches: 1.4.2;
constify audio_hw_if, midi_hw_if, and radio_hw_if.

branches: 1.3.4;
Fixes to HPC abstraction layer from Steve Rumble:

- hpc1_hdd_{ctl,bufptr} and hpc3_hdd_{ctl,bufptr} are
established in hpcreg.h. All references to these fields
are updated with the exception of if_sq: (haltwo,
hpcdma). This makes reading the code and spotting bugs
easier.
- hpcdma.c was applying EOCHAIN to the wrong descriptor
word for the hpc1 case.
- I added scsi_max_xfer to the abstraction layer, and it
allows some crusty #defines in wdsc.c to be removed.
hpc1 now doesn't waste descriptors as it once did.
- hpcreg.h was updated to reflect the lack of XMITDONE
bit in hpc1. HPC1_REV15 added for a test in hpc.c
- hpc.c now verifies HPC1 revisions (1.0 vs 1.5) and
prints the output a little prettier ;)
- power interrupts shouldn't establish on non-IP22
platforms.

TAB/space cleanup.

Support for HAL2 audio controller attached to the HPC ASIC, found on SGI Indy.

The driver is not too heavily tested and only supports audio playback and
master volume setting currently.

merge ktrace-lwp.

branches: 1.1.4;
Support for HAL2 audio controller attached to the HPC ASIC, found on SGI Indy.

The driver is not too heavily tested and only supports audio playback and
master volume setting currently.

Merge jmcneill-audiomp3 branch, which is derived from ad-audiomp2. From
the original ad-audiomp branch notes:

Add MP locking to the audio drivers.

Making the audio drivers MP safe is necessary before efforts
can be made to make the VM system MP safe.

The are two locks per device instance, an ISR lock and
a character device lock. The ISR lock replaces calls to
splaudio()/splx(), and will be held across calls to device
methods which were called at splaudio() before (e.g.
trigger_output). The character device lock is held across
calls to nearly all of the methods, excluding some only
used for initialization, e.g. get_locks.

Welcome to 5.99.57.

branches: 1.7.4; 1.7.6;
Split device_t/softc. Tested on Indy.

branches: 1.6.4; 1.6.6; 1.6.8;
Replace shutdownhook_establish(9) (which was added by me)
with pmf_device_register1(9).

Pacify haltwo audio on shutdown hook to avoid noise on poweroff.

branches: 1.4.40; 1.4.44; 1.4.46; 1.4.50;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.3.26;
merge ktrace-lwp.

branches: 1.2.10;
ansify and KNF

branches: 1.1.4;
Support for HAL2 audio controller attached to the HPC ASIC, found on SGI Indy.

The driver is not too heavily tested and only supports audio playback and
master volume setting currently.

Merge thorpej-cfargs2.

branches: 1.72.8;
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: 1.71.14;
remove long unused power button handler

one more s/panel/button, now this actually works again.

branches: 1.69.14; 1.69.16;
use bus_space_map()

branches: 1.68.2;
switch sgimips to common bus_dma and bus_space in arch/mips/
Tested on O2 and Indy.
Things that are compile-tested only for lack of hardware:
- GIO ethernet cards with PCI bridges
- IP2x hardware not found on Indy
- IP1x

branches: 1.67.14;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.66.2; 1.66.12;
#include <sys/bus.h> instead of <machine/bus.h>.

Split device_t/softc. Tested on Indy.

u_intNN_t -> uintNN_t

branches: 1.63.4; 1.63.6; 1.63.8;
Merge from matt-nb5-mips64
Merge mips-specific arch files.

add a driver for the Indy's front panel buttons.
- power button presses are reported to sysmon
- volume control buttons are reported to PMF
TODO: add better key repeat code. The hardware keeps firing interrupts at us
whenever a button is down and not on - say - status change. If we don't clear
the interrupt we'll be fired on until someone clears it. We should probably
disable the entire interrupt and occasionally poll for button release.

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits in arcemu
- Sprinkle MACH_SGI_IP6 as necessary
- Enable IP6/IP10 devices in GENERIC32_IP12. Yes, the naming is poor but
there's no winning with kernel/hw compatibility on sgimips...

Tested on my 4D/25. Doesn't (appear to) break macallan@'s IP22.

branches: 1.60.20; 1.60.28; 1.60.30; 1.60.34; 1.60.38;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.59.6;
After move to 64-bit paddr_t, cast via vaddr_t before casting to void*.
OK'ed by macallan@.

branches: 1.58.2; 1.58.4;
Merge some of the less invasive changes from the vmlocking branch:

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

branches: 1.57.4; 1.57.6; 1.57.12;
Make this compile again.

Disable handling of the power interrupt. We aren't handling it properly and
hitting any of the buttons results in infinite such interrupts.

Add a reasonably disgusting hack to not complain about a non-configured
"sq" or "wdsc" device in the GIO32 SCSI and E++ adapter cases,
respectively.

This file is getting nasty, but we've just about covered all the bases now.

Add wdsc devices for the GIO32 SCSI adapter.

Only read the eeprom once per hpc.

Support the sq(4) interface on the Challenge S's IOPLUS mezzanine. This
requires us to configure the IOPLUS to use the appropriate DMA channel,
depending on what other expansion cards may be installed. Further, we need
to do a bit more configuration of the sq(4) DMA engine, which apparently
was formerly being configured properly by the PROM. Use the same values,
which appear to work fine.

Also, extend the gio_arb_config interface as needed.

NB: We're currently setting the IOPLUS board to long burst, but it may be
better to use realtime. This will require some experimentation.

branches: 1.51.2;
Tweak comments.

IP12 (and perhaps other systems) appear to be buggy and incapable of
reliably supporting badaddr(). False negatives appear to occur
approximately 1.8 percent of the time, although neither false positives
nor consecutive false negatives occur. We take advantage of the latter
property and always use a wrapper that makes multiple checks.

My IP12 no longer sees occasional ghost devices and related panics during
boot.

Prefix 'dma_data{in,out}_cmd' with 'scsi_', since that's what they're used
for. Also, remove the 'clk_freq' variable, since this value differs on a
per-platform (IP12 is 20MHz, others are 10MHz) basis.

NB: I have no idea what frequency the GIO SCSI cards use. We'll have to
re-investigate this if we ever come across one.

Remove errnoneous register definitions and rename some to be more specific.
Also, remove unused/invalid fields in our hpc revision abstraction and
be sure to zero entries when they do not apply to a specific revision.

Use SGIMIPS_BUS_SPACE_HPC, rather than hard-coding it.

Determine if we've an onboard HPC. If not, we must set up the bus arbiter
appropriately. We may need to do further work to get the IOPLUS mezzanine
devices working as well.

Break our list of HPC devices into HPC1 and HPC3 variants. This cleans up
the list a bit and avoids Challenge S from using the HPC1 offets for its
HPC3-based secondary ethernet on the IOPLUS mezzanine board.

Indigo and Indigo2 machines have only one shared interrupt for the two
GIO slots. This differs from Indy, which has an interrupt per slot, neither
of which is the same as on the other two machines.

This lets my Phobos G160 run in both slots in my Indigo2 and my E++ adapter
works in both slots in my Indigo.

EEPROM and LED controls occupy the same byte. Unify them again.

Provide attaching hpc devices with the eeprom contents, should a chip be
connected to the HPC. The only real reason for doing this is to get the
mac addresses off of E++ ethernet boards and the Challenge S IOPLUS board.
If no eeprom is present, we read in invalid data and take some default
action (query ARCBIOS).

Sprinkle static.

Rework detecting the HPC revision. In most cases we can presume what it is
based on mach_type (or at least know the major revision). The only case we
really need to concern ourselves with is differentiating between HPC1
and HPC3 on IP22. Specifically, between a HPC3 on the Challenge S IOPLUS
board and a HPC1.5-based adapter in an Indy.

Fix previous by including the necessary header.

Remove superfluous extern declarations; they're already in the headers.

branches: 1.37.2;
Add missing equal sign.

Use device_cfdata().

branches: 1.35.4; 1.35.6; 1.35.8; 1.35.10; 1.35.12;
Added support for the IP22 IOC's parallel port (PI1).

Code contributed by Joe Britt.

Reviewed by <sekiya> and <kurahone>.

merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.32.2;
convert remaining autoconf bus "submatch" functions to use the new
signature (passing locators), and remove some which obviously don't
serve any purpose
(untested, sorry)

Prepend HPC3 macros universally with "HPC3_" to distinctly recognise
the corresponding revision and maintain consistency with HPC1.

No functional change intended.

Remove a few HPC1 register definitions for ones that don't exist.

Also, HPC1_ENET_INTDELAYVAL isn't a magic number. It turns the
interrupt delay off (by being the timer trigger bit), so name it
more appropriately.

Add some infrastructure to support HPC-based ethernet adapters
(E++):
o The static configuration table now identifies by HPC offset.
o Added sq(4) entries for IP12, IP20, and IP24.
o Accomodated HPC revision forcing based on kernel config flags.

Make das blinkenlights, well, blink on IP12 also.

* The HPC endianness register isn't mapped on my IP12, so don't try to
unconditionally read it
* IP12 glue from Steve Rumble

branches: 1.26.2;
Blinkenlitzen for IP20 (Indigo).

IP20 has two z8530 chips -- one at 0xd00 for keyboard/mouse, one at 0xd10
for serial ports. Attach the former as zs1 to keep serial console goo as
simple as possible.

Force little-endian mode on hpc1, and attach zs on IP20.

Fixes to HPC abstraction layer from Steve Rumble:

- hpc1_hdd_{ctl,bufptr} and hpc3_hdd_{ctl,bufptr} are
established in hpcreg.h. All references to these fields
are updated with the exception of if_sq: (haltwo,
hpcdma). This makes reading the code and spotting bugs
easier.
- hpcdma.c was applying EOCHAIN to the wrong descriptor
word for the hpc1 case.
- I added scsi_max_xfer to the abstraction layer, and it
allows some crusty #defines in wdsc.c to be removed.
hpc1 now doesn't waste descriptors as it once did.
- hpcreg.h was updated to reflect the lack of XMITDONE
bit in hpc1. HPC1_REV15 added for a test in hpc.c
- hpc.c now verifies HPC1 revisions (1.0 vs 1.5) and
prints the output a little prettier ;)
- power interrupts shouldn't establish on non-IP22
platforms.

Introduce abstraction layer for HPC registers and values, which addresses the
divergence between HPC revision 1.5 and revision 3.

The wdsc driver has been updated to reflect this layer (and may now work on
IP20). The sq driver needs a bit more work before it can be committed.

A slighly more descriptive iocreg.h now lives in ../ioc.

Allow hpc to attach on IP20.

Replace some magic numbers by symbolic constants.

Add dpclock driver (and minimal hpc1 goo) for ip20.

Add pckbc to device list.

www.netbsd.org -> www.NetBSD.org

Attach haltwo on Indigo2 machines also, it reportedly works on them.

Support for HAL2 audio controller attached to the HPC ASIC, found on SGI Indy.

The driver is not too heavily tested and only supports audio playback and
master volume setting currently.

__KERNEL_RCSID()

branches: 1.12.6;
Fix signed/unsigned comparison warnings.

Use CFATTACH_DECL().

Declare all cfattach structures const.

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

Introduce a new routine, config_match(), which invokes the
cfattach->ca_match function in behalf of the caller. Use it
rather than invoking cfattach->ca_match directly.

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

Less odious hack for powerfail interrupt; even thought it's still odious,
at least now we only attempt to install the handler once.

Stylistic fix to last.

Fix up Jason's last cleanup (thanks for that, btw!!)... Don't attach
hpc child devices that don't match our systype. Attempting to attach
a wdsc1 on my Challenge S locks the box hard.

* Clean up HPC autoconfiguration a little. Pass device register and
DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.

branches: 1.2.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

branches: 1.1.2;
Support for the HPC I/O peripheral ASIC. There is where SCSI, Ethernet,
etc. live on the Indigo2 and Indy.

From Rafal K. Boni.

Add (intptr_t) casts to fix "cast to pointer from integer of different size",
mainly for GENERIC64_32_* configs.
Also change segp->ds_len format specifier to %lld, which fixes DMA_DEBUG build.

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

Some KNF and cosmetics.

u_intNN_t -> uintNN_t

Small bus_dma(9) tweaks:
- call bus_dmamap_create(9) after bus_dmamem_alloc(9) and bus_dmamem_map(9)
return successfully
- no need to use PAGE_SIZE for size of descriptor dmamap
- use bus_addr_t to store DMA address
- BUS_DMASYNC_PREWRITE is enough for host-to-device only descriptors

Tested on R5000 Indy.

branches: 1.17.4; 1.17.6; 1.17.8;
Merge from matt-nb5-mips64
Merge mips-specific arch files.

branches: 1.16.16;
Backout previous: the license sweep touched these files in error, so
restore the old license.

branches: 1.15.2;
Remove clause 3 and 4 from TNF licenses

branches: 1.14.20;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.13.6;
After move to 64-bit paddr_t, cast via vaddr_t before casting to void*.
OK'ed by macallan@.

branches: 1.12.2; 1.12.10; 1.12.12; 1.12.14;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.11.26;
merge ktrace-lwp.

branches: 1.10.10;
Prepend HPC3 macros universally with "HPC3_" to distinctly recognise
the corresponding revision and maintain consistency with HPC1.

No functional change intended.

Fixes to HPC abstraction layer from Steve Rumble:

- hpc1_hdd_{ctl,bufptr} and hpc3_hdd_{ctl,bufptr} are
established in hpcreg.h. All references to these fields
are updated with the exception of if_sq: (haltwo,
hpcdma). This makes reading the code and spotting bugs
easier.
- hpcdma.c was applying EOCHAIN to the wrong descriptor
word for the hpc1 case.
- I added scsi_max_xfer to the abstraction layer, and it
allows some crusty #defines in wdsc.c to be removed.
hpc1 now doesn't waste descriptors as it once did.
- hpcreg.h was updated to reflect the lack of XMITDONE
bit in hpc1. HPC1_REV15 added for a test in hpc.c
- hpc.c now verifies HPC1 revisions (1.0 vs 1.5) and
prints the output a little prettier ;)
- power interrupts shouldn't establish on non-IP22
platforms.

Introduce abstraction layer for HPC registers and values, which addresses the
divergence between HPC revision 1.5 and revision 3.

The wdsc driver has been updated to reflect this layer (and may now work on
IP20). The sq driver needs a bit more work before it can be committed.

__KERNEL_RCSID()

branches: 1.6.2;
Use PAGE_SIZE rather than NBPG.

Avoid a strict-aliasing warning from GCC 3.3.

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

* Clean up HPC autoconfiguration a little. Pass device register and
DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.

* Add a callback to the front-end for the 33c93 driver to reset
the controller/SCSI bus.
* Implement controller/SCSI bus reset on SGI HPC3 SCSI using the
"channel reset" bit in the SCSI DMA channel control register.

branches: 1.1.2; 1.1.8;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

s/transfered/transferred/

branches: 1.11.54;
#include <sys/bus.h> instead of <machine/bus.h>.

u_intNN_t -> uintNN_t

Small bus_dma(9) tweaks:
- call bus_dmamap_create(9) after bus_dmamem_alloc(9) and bus_dmamem_map(9)
return successfully
- no need to use PAGE_SIZE for size of descriptor dmamap
- use bus_addr_t to store DMA address
- BUS_DMASYNC_PREWRITE is enough for host-to-device only descriptors

Tested on R5000 Indy.

branches: 1.8.20; 1.8.26; 1.8.28;
Backout previous: the license sweep touched these files in error, so
restore the old license.

branches: 1.7.2;
Remove clause 3 and 4 from TNF licenses

merge ktrace-lwp.

Introduce abstraction layer for HPC registers and values, which addresses the
divergence between HPC revision 1.5 and revision 3.

The wdsc driver has been updated to reflect this layer (and may now work on
IP20). The sq driver needs a bit more work before it can be committed.

branches: 1.4.12;
Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

* Add a callback to the front-end for the 33c93 driver to reset
the controller/SCSI bus.
* Implement controller/SCSI bus reset on SGI HPC3 SCSI using the
"channel reset" bit in the SCSI DMA channel control register.

branches: 1.2.2;
Complete overhaul of WD33c93 SCSI driver

- Full support for SCSI-2 Tagged commands (enabled by default)
- Implement save and restore datapointer messages
- Formalize interface between MI and MD drivers.
- decouple interface between MD driver and DMA routines
- Use scsipi layer where appropriate (Tags, Sync Negotiations etc)
- control blocks stored using kernel pool(9) functions
- evcnt(9) compliant counters
- Enable advanced features on later WD33c93 chips.
(Identify message out phase is hardware assisted)
- Improved timeout support (one per active control block)
- Improved MESG_IN and MESG_OUT handling
- Start to tidy up debugging output
- Numerous bug fixes and cleanups throughout

Changes are based largely on the NCR53c9x MI driver for ideas on
how to DTRT.

branches: 1.1.2; 1.1.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

s/configururation/configuration/ in comments.

branches: 1.20.92;
u_intNN_t -> uintNN_t

branches: 1.19.68; 1.19.74; 1.19.76;
Support the sq(4) interface on the Challenge S's IOPLUS mezzanine. This
requires us to configure the IOPLUS to use the appropriate DMA channel,
depending on what other expansion cards may be installed. Further, we need
to do a bit more configuration of the sq(4) DMA engine, which apparently
was formerly being configured properly by the PROM. Use the same values,
which appear to work fine.

Also, extend the gio_arb_config interface as needed.

NB: We're currently setting the IOPLUS board to long burst, but it may be
better to use realtime. This will require some experimentation.

branches: 1.18.2;
Remove errnoneous register definitions and rename some to be more specific.
Also, remove unused/invalid fields in our hpc revision abstraction and
be sure to zero entries when they do not apply to a specific revision.

EEPROM and LED controls occupy the same byte. Unify them again.

Provide attaching hpc devices with the eeprom contents, should a chip be
connected to the HPC. The only real reason for doing this is to get the
mac addresses off of E++ ethernet boards and the Challenge S IOPLUS board.
If no eeprom is present, we read in invalid data and take some default
action (query ARCBIOS).

Rework detecting the HPC revision. In most cases we can presume what it is
based on mach_type (or at least know the major revision). The only case we
really need to concern ourselves with is differentiating between HPC1
and HPC3 on IP22. Specifically, between a HPC3 on the Challenge S IOPLUS
board and a HPC1.5-based adapter in an Indy.

branches: 1.14.20;
merge ktrace-lwp.

branches: 1.13.10;
Prepend HPC3 macros universally with "HPC3_" to distinctly recognise
the corresponding revision and maintain consistency with HPC1.

No functional change intended.

Remove a few HPC1 register definitions for ones that don't exist.

Also, HPC1_ENET_INTDELAYVAL isn't a magic number. It turns the
interrupt delay off (by being the timer trigger bit), so name it
more appropriately.

Add defines for the four possible HPC GIO bus addresses.

Fixes to HPC abstraction layer from Steve Rumble:

- hpc1_hdd_{ctl,bufptr} and hpc3_hdd_{ctl,bufptr} are
established in hpcreg.h. All references to these fields
are updated with the exception of if_sq: (haltwo,
hpcdma). This makes reading the code and spotting bugs
easier.
- hpcdma.c was applying EOCHAIN to the wrong descriptor
word for the hpc1 case.
- I added scsi_max_xfer to the abstraction layer, and it
allows some crusty #defines in wdsc.c to be removed.
hpc1 now doesn't waste descriptors as it once did.
- hpcreg.h was updated to reflect the lack of XMITDONE
bit in hpc1. HPC1_REV15 added for a test in hpc.c
- hpc.c now verifies HPC1 revisions (1.0 vs 1.5) and
prints the output a little prettier ;)
- power interrupts shouldn't establish on non-IP22
platforms.

Introduce abstraction layer for HPC registers and values, which addresses the
divergence between HPC revision 1.5 and revision 3.

The wdsc driver has been updated to reflect this layer (and may now work on
IP20). The sq driver needs a bit more work before it can be committed.

Add dpclock driver (and minimal hpc1 goo) for ip20.

Fix mistake in previous.

Correct offsets for HPC_PBUS_CHx_{BP,DP} and add HPC_PBUS_DMACTL_* definitions.

branches: 1.5.12;
Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

* Clean up HPC autoconfiguration a little. Pass device register and
DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.

branches: 1.3.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

branches: 1.2.2;
Add a bunch of defines for bits withing the ethernet-related registers so
the Seeq driver can use them instead of hardcoded constants.

Support for the HPC I/O peripheral ASIC. There is where SCSI, Ethernet,
etc. live on the Indigo2 and Indy.

From Rafal K. Boni.

u_intNN_t -> uintNN_t

branches: 1.11.70; 1.11.76; 1.11.78;
Prefix 'dma_data{in,out}_cmd' with 'scsi_', since that's what they're used
for. Also, remove the 'clk_freq' variable, since this value differs on a
per-platform (IP12 is 20MHz, others are 10MHz) basis.

NB: I have no idea what frequency the GIO SCSI cards use. We'll have to
re-investigate this if we ever come across one.

Remove errnoneous register definitions and rename some to be more specific.
Also, remove unused/invalid fields in our hpc revision abstraction and
be sure to zero entries when they do not apply to a specific revision.

Provide attaching hpc devices with the eeprom contents, should a chip be
connected to the HPC. The only real reason for doing this is to get the
mac addresses off of E++ ethernet boards and the Challenge S IOPLUS board.
If no eeprom is present, we read in invalid data and take some default
action (query ARCBIOS).

branches: 1.8.20;
merge ktrace-lwp.

branches: 1.7.16;
Fixes to HPC abstraction layer from Steve Rumble:

- hpc1_hdd_{ctl,bufptr} and hpc3_hdd_{ctl,bufptr} are
established in hpcreg.h. All references to these fields
are updated with the exception of if_sq: (haltwo,
hpcdma). This makes reading the code and spotting bugs
easier.
- hpcdma.c was applying EOCHAIN to the wrong descriptor
word for the hpc1 case.
- I added scsi_max_xfer to the abstraction layer, and it
allows some crusty #defines in wdsc.c to be removed.
hpc1 now doesn't waste descriptors as it once did.
- hpcreg.h was updated to reflect the lack of XMITDONE
bit in hpc1. HPC1_REV15 added for a test in hpc.c
- hpc.c now verifies HPC1 revisions (1.0 vs 1.5) and
prints the output a little prettier ;)
- power interrupts shouldn't establish on non-IP22
platforms.

Introduce abstraction layer for HPC registers and values, which addresses the
divergence between HPC revision 1.5 and revision 3.

The wdsc driver has been updated to reflect this layer (and may now work on
IP20). The sq driver needs a bit more work before it can be committed.

Add dpclock driver (and minimal hpc1 goo) for ip20.

branches: 1.4.12;
Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

* Clean up HPC autoconfiguration a little. Pass device register and
DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.

branches: 1.2.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

branches: 1.1.2;
Support for the HPC I/O peripheral ASIC. There is where SCSI, Ethernet,
etc. live on the Indigo2 and Indy.

From Rafal K. Boni.

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: 1.59.2;
if_stats(9): Add ifp argument to if_stat..._ref.

This will enable us to pass the ifp through to a dtrace probe inside.

No functional change intended in this change, but this is an API
change visible to modules so it shouldn't be pulled up.

PR kern/58377

s/alloted/allotted/ in comments.

Remove unnecessary <sys/malloc.h>.

add explicit braces around SQ_DPRINTF() to fix dangling else compiler error.

fixes build with SQ_DEBUG option enabled for sgimips.

Eliminate use of IFF_OACTIVE.

Fix typo

Adopt <net/if_stats.h>.

branches: 1.52.4;
Whitespace fix (mainly tabify).

-No functional change:
- KNF
- u_int*_t -> uint*_t.

Remove very old IFF_NOTRAILERS flag.

branches: 1.49.2;
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.

branches: 1.48.14;
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

Apply deferred if_start framework

if_schedule_deferred_start checks if the if_snd queue contains packets,
so drivers don't need to check it by themselves.

branches: 1.46.2;
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!

switch sgimips to common bus_dma and bus_space in arch/mips/
Tested on O2 and Indy.
Things that are compile-tested only for lack of hardware:
- GIO ethernet cards with PCI bridges
- IP2x hardware not found on Indy
- IP1x

branches: 1.43.6; 1.43.24;
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: 1.42.2; 1.42.6;
#include <sys/bus.h> instead of <machine/bus.h>.

Merge forward matt-nb5-mips64
Adapt to new interrupt/spl framework
Deal with arcbios calls being O32 and kernels being N32/N64.
Need to save/restore T8 across arcbios calls.

KNF and misc cosmetics.

Split device_t/softc. Tested on Indy.

u_intNN_t -> uintNN_t

branches: 1.37.2; 1.37.4;
Use ether_aton_r() in sys/net/if_ethersubr.c instead of home grown copies.
Hint from ryo@. Tested on IP32 mec(4).

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: 1.35.2; 1.35.4;
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.

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

branches: 1.33.44; 1.33.62;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

Add a real probe so that we don't attach sq(4) on GIO32 SCSI adapters.

Support the sq(4) interface on the Challenge S's IOPLUS mezzanine. This
requires us to configure the IOPLUS to use the appropriate DMA channel,
depending on what other expansion cards may be installed. Further, we need
to do a bit more configuration of the sq(4) DMA engine, which apparently
was formerly being configured properly by the PROM. Use the same values,
which appear to work fine.

Also, extend the gio_arb_config interface as needed.

NB: We're currently setting the IOPLUS board to long burst, but it may be
better to use realtime. This will require some experimentation.

branches: 1.30.2;
Provide attaching hpc devices with the eeprom contents, should a chip be
connected to the HPC. The only real reason for doing this is to get the
mac addresses off of E++ ethernet boards and the Challenge S IOPLUS board.
If no eeprom is present, we read in invalid data and take some default
action (query ARCBIOS).

branches: 1.29.20;
merge ktrace-lwp.

branches: 1.28.2;
Constify

Do not report unexpected interrupts when not debugging. These
seem to occur fairly often under normal operation with HPC1.5.
Also, do not return if the interrupt is unexpected, but see if
there is anything to handle regardless, which appears to always
be the case with HPC1.5.

Prepend HPC3 macros universally with "HPC3_" to distinctly recognise
the corresponding revision and maintain consistency with HPC1.

No functional change intended.

Remove a few HPC1 register definitions for ones that don't exist.

Also, HPC1_ENET_INTDELAYVAL isn't a magic number. It turns the
interrupt delay off (by being the timer trigger bit), so name it
more appropriately.

Wrap seeq and hpc register reads and writes in macros for
readability. While here, engage in some KNF and 80-column policing.
No functional changes intended.

Fix the HPC1 transmit logic, which was previously very broken.

HPC1 does not mark transmitted descriptors like HPC3. We must
query the HPC1 chip to determine what it expects the next
descriptor to be, reclaim used ones, and restart if necessary. Each
revision's corresponding logic now lives in its own
sq_txring_hpc{1,3} function.

HPC1's transmit interrupt conditions also differ from HPC3, so
remove the INTR bits from descriptors when tagging new packets on
to the end of the chain in order to avoid unwanted interrupts.

Also, be extra careful when restarting the transmit ring. Since
transmit interrupts seem to be relatively slow on HPC1, sq_start
may be called while the DMA engine is quiescent, and before a
transmit interrupt is asserted. We cannot behave like HPC3, which
begins transmission from the first packet pulled from IFQ if the
DMA engine is quiescent as this would skip enqueued packets. It
appears that sq_start is never called before HPC3 asserts an
interrupt, which restarts the transmit queue at the appropriate
place. However, this often happens with HPC1 and we cannot assume
that if DMA is inactive in sq_start, then all previously queued
packets have fled the coop.
XXX Is there a similar race possible with HPC3?

HPC3 logic should remain functionally unchanged, and HPC1 should
finally work properly.

Remove the static sq_trace array and make it per-device as
multiple seeq interfaces may exist. While here, add a few trace
actions, move the related macros into sqvar.h, and enhance the
sq_trace_dump output a bit.

When adding/deleting multicast addresses, only whack the address
filter if the interface is marked RUNNING.

Fixes kern/27678.

branches: 1.20.2; 1.20.4;
Adapt if_sq to HPC abstraction layer. It took both Steve Rumble and myself
to untangle the unhappiness that arises from the design differences between
HPC1 and HPC3.

Fix another lasttx uninitialized variable

TAB/space cleanup.

__KERNEL_RCSID()

branches: 1.16.2;
When padding frames smaller than ethernet minimum size, make sure we supply
a buffer long enouth, with the padding bytes initialised.
Also pad to ETHER_MIN_LEN - ETHER_CRC_LEN, not ETHER_MIN_LEN (padded frames
were 4 bytes too long).

Fix signed/unsigned comparison warnings.

Use CFATTACH_DECL().

Declare all cfattach structures const.

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

branches: 1.11.4;
Add interrupt counter for Seeq interrupts; also, make sure to reset back to
"recieve only my frames & broadcasts" and clear the ALLMULTI flag if we have
no multicast addresses in our list.

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

Post Jason's autoconfig cleanup, the DMA tags are actually passed in from
the parent, so we don't need to look at the innards of bus_dma anymore.
Also, remove the Todo item pertaining to autoconfig cleanup from the list
in the comments.

* Clean up HPC autoconfiguration a little. Pass device register and
DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.

branches: 1.7.2; 1.7.8;
bcopy -> memcpy, bzero -> memset

- If the multicast address list changes, make sure to kick the chip.
- Remove unnecessary includes.
- Slight cosmetic change in sq_start().

Use sys/dev/arcbios.

Make sure to always re-sync the rx buffer dmamap if recycling the
rx buffer.

- Differentiate beteen the 8003 and 80c03 (the 80c03 has some additional
features).
- Implement crude multicast support -- enable reception of all multicast
frames if we have any addresses on the multicast list. TODO: use the
64-bit hash table on the 80c03.
- Implement promiscuous mode.

IPv6 doesn't quite work yet -- DAD finds a duplicate for the
link-local. The 8003 hears its own transmissions, but IFF_SIMPLEX
is not set, so I'm a little confused.

Fix a deadlock in the tx code -- the code checked the DMA status before
sync'ing the descriptor, leading to a race where the packet could complete
after the DMA check but before the sync of the descriptor, sending the code
into unknown territory and the DMA engine into space. Also, fix a bug with
spurious watchdog resets going off due to the if_timer not always being set
on transmit.

Finally, clean up use of hardcoded magic numbers, get them from hpcreg.h
when possible.

Support for the Seeq 8003 Ethernet attached to the HPC ASIC,
found on Indigo2 and Indy.

From Rafal K. Boni.

A slighly more descriptive iocreg.h now lives in ../ioc.

branches: 1.2.12;
Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

branches: 1.1.2; 1.1.8;
IOC1/2 memory map.

From Rafal K. Boni.

rename panel to button.

branches: 1.3.16;
switch sgimips to common bus_dma and bus_space in arch/mips/
Tested on O2 and Indy.
Things that are compile-tested only for lack of hardware:
- GIO ethernet cards with PCI bridges
- IP2x hardware not found on Indy
- IP1x

branches: 1.2.14; 1.2.32;
validate cf_name in driver match method

branches: 1.1.2; 1.1.4; 1.1.8; 1.1.10; 1.1.12; 1.1.14;
add a driver for the Indy's front panel buttons.
- power button presses are reported to sysmon
- volume control buttons are reported to PMF
TODO: add better key repeat code. The hardware keeps firing interrupts at us
whenever a button is down and not on - say - status change. If we don't clear
the interrupt we'll be fired on until someone clears it. We should probably
disable the entire interrupt and occasionally poll for button release.

malloc(9) -> kmem(9)

branches: 1.10.30;
switch sgimips to common bus_dma and bus_space in arch/mips/
Tested on O2 and Indy.
Things that are compile-tested only for lack of hardware:
- GIO ethernet cards with PCI bridges
- IP2x hardware not found on Indy
- IP1x

branches: 1.9.48; 1.9.68;
Split device_t and softc for pckbc(4) and its attachments.

branches: 1.8.2; 1.8.6;
Fix includes.

branches: 1.7.2; 1.7.8;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.6.10;
Merge some of the less invasive changes from the vmlocking branch:

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

branches: 1.5.30; 1.5.32; 1.5.38;
merge ktrace-lwp.

branches: 1.4.4; 1.4.18;
Remove pckbc_machdep_cnattach() -- it's no longer needed.

Make this compile and apparently work (it generates interrupts properly, at
least).
XXX The is_console test is horribly ugly but necessary for the pckbc_cnattach
XXX coming soon.

netbsd.org -> NetBSD.org

All "netbsd.org" is now gone from src/sys/arch.

Add driver for pckbc at hpc. There's an interrupt issue that still needs
to be resolved.

s/varaible/variable/ and s/varible/variable/ in comments.

fix various typos in comments, log messages and documentation.

Merge thorpej-cfargs2.

branches: 1.14.8;
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: 1.13.10;
s/transfered/transferred/

branches: 1.12.28;
"peripheral", not "peripherial".

branches: 1.11.12; 1.11.26;
#include <sys/bus.h> instead of <machine/bus.h>.

Convert simple_lock/ltsleep to mutex/condvar and malloc to kmem.

branches: 1.9.2;
validate cf_name in driver match method

u_intNN_t -> uintNN_t

branches: 1.7.6; 1.7.8; 1.7.10;
replace bitmask_snprintf(9) with snprintb(3)

branches: 1.6.2; 1.6.10;
Make this build again. From Hans Rosenfeld.

branches: 1.5.2;
Fix panics at boot and some other misc bugs. From Hans Rosenfeld.

device_t / softc split. From Hans Rosenfeld.

ppbus device_t / softc splitting. From Hans Rosenfeld.

branches: 1.2.40;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.1.18; 1.1.28;
Added support for the IP22 IOC's parallel port (PI1).

Code contributed by Joe Britt.

Reviewed by <sekiya> and <kurahone>.

Fix typo(s/interupt/interrupt/)

branches: 1.1.18; 1.1.80; 1.1.88; 1.1.94;
Added support for the IP22 IOC's parallel port (PI1).

Code contributed by Joe Britt.

Reviewed by <sekiya> and <kurahone>.

s/Thresold/Threshold/ in comments.

branches: 1.7.10;
fix various typos in comments, log messages and documentation.

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

Convert simple_lock/ltsleep to mutex/condvar and malloc to kmem.

branches: 1.4.2;
u_intNN_t -> uintNN_t

branches: 1.3.26; 1.3.32; 1.3.34;
ppbus device_t / softc splitting. From Hans Rosenfeld.

branches: 1.2.40;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.1.18; 1.1.28;
Added support for the IP22 IOC's parallel port (PI1).

Code contributed by Joe Britt.

Reviewed by <sekiya> and <kurahone>.

Move the sgimips "sbic" driver from arch/sgimips/hpc/sbic.c to
dev/ic/wd33c93.c. This may not be the best WD33C93 driver we've
got, but it's the most recently worked on and probably the most
portable, so it seems like a good basis for further work (and in
particular an acorn26 driver for the Acorn SCSI card). There's
no functional change in this commit, and sgimips kernels still
compile.

Use device_cfdata().

branches: 1.20.2;
Use the SI capitalization for "Hz", "kHz", and "MHz" in comments and strings.
Add a space between numbers and Hz unit.

branches: 1.19.4; 1.19.6; 1.19.8; 1.19.10;
merge ktrace-lwp.

branches: 1.18.2;
Constify

de-__P, sprinkle some KNF.

TAB/space cleanup.

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

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

__KERNEL_RCSID()

branches: 1.13.2;
don't #include <sys/dkstat.h> where it is (appearently) unused

DMA, not dma nor Dma.

Fix signed/unsigned comparison warnings.

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

Implement mstohz() as discussed on tech-kern, and use it in SCSI drivers
to convert xs->timeout to callout() parameter.

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

Pool deals fairly well with physical memory shortage, but it doesn't
deal with shortages of the VM maps where the backing pages are mapped
(usually kmem_map). Try to deal with this:

* Group all information about the backend allocator for a pool in a
separate structure. The pool references this structure, rather than
the individual fields.
* Change the pool_init() API accordingly, and adjust all callers.
* Link all pools using the same backend allocator on a list.
* The backend allocator is responsible for waiting for physical memory
to become available, but will still fail if it cannot callocate KVA
space for the pages. If this happens, carefully drain all pools using
the same backend allocator, so that some KVA space can be freed.
* Change pool_reclaim() to indicate if it actually succeeded in freeing
some pages, and use that information to make draining easier and more
efficient.
* Get rid of PR_URGENT. There was only one use of it, and it could be
dealt with by the caller.

From art@openbsd.org.

s/seperate/separate/

sbic -> wd33c93, in preparation for the core driver going into
sys/dev/ic.

* Add a callback to the front-end for the 33c93 driver to reset
the controller/SCSI bus.
* Implement controller/SCSI bus reset on SGI HPC3 SCSI using the
"channel reset" bit in the SCSI DMA channel control register.

branches: 1.3.2;
Tidy up debug logic

Fix compile errors when DIAGNOSTIC or DEBUG options disabled.

Complete overhaul of WD33c93 SCSI driver

- Full support for SCSI-2 Tagged commands (enabled by default)
- Implement save and restore datapointer messages
- Formalize interface between MI and MD drivers.
- decouple interface between MD driver and DMA routines
- Use scsipi layer where appropriate (Tags, Sync Negotiations etc)
- control blocks stored using kernel pool(9) functions
- evcnt(9) compliant counters
- Enable advanced features on later WD33c93 chips.
(Identify message out phase is hardware assisted)
- Improved timeout support (one per active control block)
- Improved MESG_IN and MESG_OUT handling
- Start to tidy up debugging output
- Numerous bug fixes and cleanups throughout

Changes are based largely on the NCR53c9x MI driver for ideas on
how to DTRT.

branches: 1.1.2; 1.1.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

Move the sgimips "sbic" driver from arch/sgimips/hpc/sbic.c to
dev/ic/wd33c93.c. This may not be the best WD33C93 driver we've
got, but it's the most recently worked on and probably the most
portable, so it seems like a good basis for further work (and in
particular an acorn26 driver for the Acorn SCSI card). There's
no functional change in this commit, and sgimips kernels still
compile.

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

branches: 1.6.4; 1.6.6; 1.6.8; 1.6.10;
merge ktrace-lwp.

branches: 1.5.16;
Move UCB-licensed code from 4-clause to 3-clause licence.

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

branches: 1.4.12;
Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

sbic -> wd33c93, in preparation for the core driver going into
sys/dev/ic.

branches: 1.2.2;
Complete overhaul of WD33c93 SCSI driver

- Full support for SCSI-2 Tagged commands (enabled by default)
- Implement save and restore datapointer messages
- Formalize interface between MI and MD drivers.
- decouple interface between MD driver and DMA routines
- Use scsipi layer where appropriate (Tags, Sync Negotiations etc)
- control blocks stored using kernel pool(9) functions
- evcnt(9) compliant counters
- Enable advanced features on later WD33c93 chips.
(Identify message out phase is hardware assisted)
- Improved timeout support (one per active control block)
- Improved MESG_IN and MESG_OUT handling
- Start to tidy up debugging output
- Numerous bug fixes and cleanups throughout

Changes are based largely on the NCR53c9x MI driver for ideas on
how to DTRT.

branches: 1.1.2; 1.1.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

Move the sgimips "sbic" driver from arch/sgimips/hpc/sbic.c to
dev/ic/wd33c93.c. This may not be the best WD33C93 driver we've
got, but it's the most recently worked on and probably the most
portable, so it seems like a good basis for further work (and in
particular an acorn26 driver for the Acorn SCSI card). There's
no functional change in this commit, and sgimips kernels still
compile.

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

branches: 1.10.4; 1.10.6; 1.10.8; 1.10.10;
merge ktrace-lwp.

branches: 1.9.10;
Use "struct scsipi_command" in internal command structures so that
we have enough space for 16-byte CDBs.

occured -> occurred. From Peter Postma.

de-__P, sprinkle some KNF.

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

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

branches: 1.5.12;
Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

sbic -> wd33c93, in preparation for the core driver going into
sys/dev/ic.

* Add a callback to the front-end for the 33c93 driver to reset
the controller/SCSI bus.
* Implement controller/SCSI bus reset on SGI HPC3 SCSI using the
"channel reset" bit in the SCSI DMA channel control register.

branches: 1.2.2;
Complete overhaul of WD33c93 SCSI driver

- Full support for SCSI-2 Tagged commands (enabled by default)
- Implement save and restore datapointer messages
- Formalize interface between MI and MD drivers.
- decouple interface between MD driver and DMA routines
- Use scsipi layer where appropriate (Tags, Sync Negotiations etc)
- control blocks stored using kernel pool(9) functions
- evcnt(9) compliant counters
- Enable advanced features on later WD33c93 chips.
(Identify message out phase is hardware assisted)
- Improved timeout support (one per active control block)
- Improved MESG_IN and MESG_OUT handling
- Start to tidy up debugging output
- Numerous bug fixes and cleanups throughout

Changes are based largely on the NCR53c9x MI driver for ideas on
how to DTRT.

branches: 1.1.2; 1.1.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.

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

branches: 1.14.6; 1.14.24;
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: 1.13.2;
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: 1.12.4;
KNF and misc cosmetics.

Split device_t/softc. Tested on Indy.

u_intNN_t -> uintNN_t

branches: 1.9.100; 1.9.106; 1.9.108;
merge ktrace-lwp.

Prepend HPC3 macros universally with "HPC3_" to distinctly recognise
the corresponding revision and maintain consistency with HPC1.

No functional change intended.

HPC1 seems to benefit from larger rings. This should be especially
true on the transmit side, which appears to be significantly slower at
interrupting than HPC3.

XXX I used to be able to occasionally wedge the chip with
SQ_NTXDESC == 32, but have not yet been able to reproduce that
behaviour this evening with a larger value.

Remove the static sq_trace array and make it per-device as
multiple seeq interfaces may exist. While here, add a few trace
actions, move the related macros into sqvar.h, and enhance the
sq_trace_dump output a bit.

branches: 1.5.2; 1.5.6;
Adapt if_sq to HPC abstraction layer. It took both Steve Rumble and myself
to untangle the unhappiness that arises from the design differences between
HPC1 and HPC3.

branches: 1.4.10;
Add interrupt counter for Seeq interrupts; also, make sure to reset back to
"recieve only my frames & broadcasts" and clear the ALLMULTI flag if we have
no multicast addresses in our list.

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

branches: 1.2.2; 1.2.8;
- Differentiate beteen the 8003 and 80c03 (the 80c03 has some additional
features).
- Implement crude multicast support -- enable reception of all multicast
frames if we have any addresses on the multicast list. TODO: use the
64-bit hash table on the 80c03.
- Implement promiscuous mode.

IPv6 doesn't quite work yet -- DAD finds a duplicate for the
link-local. The 8003 hears its own transmissions, but IFF_SIMPLEX
is not set, so I'm a little confused.

Support for the Seeq 8003 Ethernet attached to the HPC ASIC,
found on Indigo2 and Indy.

From Rafal K. Boni.

Fix wdsc(4) probe failure on HPC1.5 machines (Indigo R3k/R4k, IP6/IP10/IP12).

The alignment adjustment code was removed in rev 1.36 for common
mips bus_space changes, but the code was not bus_space related
but used for uint32_t register acccess during probe.

Reported and tested by Naruaki Etomi in PR port-sgimips/53522.
Should be pulled up to netbsd-8.

branches: 1.34.10; 1.34.16; 1.34.18;
switch sgimips to common bus_dma and bus_space in arch/mips/
Tested on O2 and Indy.
Things that are compile-tested only for lack of hardware:
- GIO ethernet cards with PCI bridges
- IP2x hardware not found on Indy
- IP1x

branches: 1.33.14;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.32.2; 1.32.12;
#include <sys/bus.h> instead of <machine/bus.h>.

Some KNF and cosmetics.

- MAXPHYS is enough for DMA xfer size (hpc->scsi_max_xfer seems too large)
- switch BUS_DMASYNC_*READ and BUS_DMASYNC_*WRITE properly in
bus_dmamap_sync(9) ops per each xfer dir

Tested on R5000 Indy.

branches: 1.29.4; 1.29.6; 1.29.8;
Merge from matt-nb5-mips64
Merge mips-specific arch files.

WD33C93 has only two registers, which often times aren't mapped to adjacent
bus space locations. Map them individually, instead.

branches: 1.27.2;
- use device_t and cfdata_t
- rename variables for readability after device_t/softc split
- use proper pointer types

No binary changes.

Split device_t from wd33c93_softc. Reviewed by cube; tested on sgimips
by tsutsui.

branches: 1.25.6; 1.25.14;
Backout previous: the license sweep touched these files in error, so
restore the old license.

branches: 1.24.2;
Remove clause 3 and 4 from TNF licenses

branches: 1.23.20;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.22.10;
Use burst dma for all systems, since it's supported by all HPCs and runs
with about 25% higher throughput on my Indy and ST32430N.

branches: 1.21.4;
The wd33c93 chip appears to be clocked at 20MHz for all systems with a HPC.

branches: 1.20.2; 1.20.4;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

Add probe for wdsc so that we do not falsely attach wdsc(4) devices to E++
ethernet adapters.

By resetting the chip we also allow the wd33c93 attach routines to succeed.
Otherwise, device register accesses would result in a bus error.

branches: 1.18.2;
Prefix 'dma_data{in,out}_cmd' with 'scsi_', since that's what they're used
for. Also, remove the 'clk_freq' variable, since this value differs on a
per-platform (IP12 is 20MHz, others are 10MHz) basis.

NB: I have no idea what frequency the GIO SCSI cards use. We'll have to
re-investigate this if we ever come across one.

Allow wd33c93 attachments to choose what DMA mode it should use, and arrange
to use burst mode on sec(4), which makes it slightly but significantly faster.

branches: 1.16.2; 1.16.4;
Move the sgimips "sbic" driver from arch/sgimips/hpc/sbic.c to
dev/ic/wd33c93.c. This may not be the best WD33C93 driver we've
got, but it's the most recently worked on and probably the most
portable, so it seems like a good basis for further work (and in
particular an acorn26 driver for the Acorn SCSI card). There's
no functional change in this commit, and sgimips kernels still
compile.

branches: 1.15.4; 1.15.8;
merge ktrace-lwp.

branches: 1.14.16;
de-__P, sprinkle some KNF.

Fixes to HPC abstraction layer from Steve Rumble:

- hpc1_hdd_{ctl,bufptr} and hpc3_hdd_{ctl,bufptr} are
established in hpcreg.h. All references to these fields
are updated with the exception of if_sq: (haltwo,
hpcdma). This makes reading the code and spotting bugs
easier.
- hpcdma.c was applying EOCHAIN to the wrong descriptor
word for the hpc1 case.
- I added scsi_max_xfer to the abstraction layer, and it
allows some crusty #defines in wdsc.c to be removed.
hpc1 now doesn't waste descriptors as it once did.
- hpcreg.h was updated to reflect the lack of XMITDONE
bit in hpc1. HPC1_REV15 added for a test in hpc.c
- hpc.c now verifies HPC1 revisions (1.0 vs 1.5) and
prints the output a little prettier ;)
- power interrupts shouldn't establish on non-IP22
platforms.

Introduce abstraction layer for HPC registers and values, which addresses the
divergence between HPC revision 1.5 and revision 3.

The wdsc driver has been updated to reflect this layer (and may now work on
IP20). The sq driver needs a bit more work before it can be committed.

__KERNEL_RCSID()

branches: 1.10.6;
Use CFATTACH_DECL().

Declare all cfattach structures const.

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

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

sbic -> wd33c93, in preparation for the core driver going into
sys/dev/ic.

The 2nd SCSI controller is now supported; remove it from the TODO list.

* Clean up HPC autoconfiguration a little. Pass device register and
DMA register offsets, as well as IRQ, to children. Use direct
config. Use machine type/subtype to determine which devices are
present.
* Add support for the second SCSI controller on the Indigo2.

* Add a callback to the front-end for the 33c93 driver to reset
the controller/SCSI bus.
* Implement controller/SCSI bus reset on SGI HPC3 SCSI using the
"channel reset" bit in the SCSI DMA channel control register.

branches: 1.2.2;
Complete overhaul of WD33c93 SCSI driver

- Full support for SCSI-2 Tagged commands (enabled by default)
- Implement save and restore datapointer messages
- Formalize interface between MI and MD drivers.
- decouple interface between MD driver and DMA routines
- Use scsipi layer where appropriate (Tags, Sync Negotiations etc)
- control blocks stored using kernel pool(9) functions
- evcnt(9) compliant counters
- Enable advanced features on later WD33c93 chips.
(Identify message out phase is hardware assisted)
- Improved timeout support (one per active control block)
- Improved MESG_IN and MESG_OUT handling
- Start to tidy up debugging output
- Numerous bug fixes and cleanups throughout

Changes are based largely on the NCR53c9x MI driver for ideas on
how to DTRT.

branches: 1.1.2; 1.1.6;
Initial implementation of WD33C9x SCSI driver for SGI IP22 platforms.

Based on mvme68k and Atari drivers for the same chipset with the
addition of bus_space support. Attempts have been made to seperate out the
machine dependent dma components and more work is required in this area.

Tested on SGI R4K Indy, but has little testing on other platforms.