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: 1.21.20;
+#include "opt_usb.h"

branches: 1.20.2;
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

various umidi clean ups:
- move the contents of umidi{reg,var}.h into umidi.c directly as they
are not referenced by any other file.
- remove the useless include of umidi{reg,var}.h from umidi_quirks.c.
- add reference counting and wait/broadcast support to the IO paths.
- fix the error handling in midi_attach() and midi_open().
- sprinkle KASSERT() in several places.
- drop the local interrupt lock before calling into various parts of
the USB code. fixes lockdebug issues, and likely hangs.
- rename "binded" member as "bound".

with these most of the panics and problems i've seen are gone. there
is still one lockdebug panic to deal with that happens when unplugging
umidi while midiplay(1) is running.

branches: 1.18.2; 1.18.14; 1.18.16;
Increase the number of frequencies in the usb_audio_streaming_type1_descriptor
to be the same number that we support elsewhere (AUFMT_MAX_FREQUENCIES).
Set frequency_type to be AUFMT_MAX_FREQUENCIES in the case where a uaudio
device reports more frequencies than we handle.
Fixes a crash in uaudio_chan_ptransfer() because we read uninitialised data
in uaudio_identify_as().

add Roland UM-ONE (essentially, same as Roland UM-1)

from PR/45908 by Tom Ivar Helbekkmo

branches: 1.16.28; 1.16.32;
Constify most umidi-quirk data. Addresses PR#39017.

branches: 1.15.2; 1.15.4; 1.15.6;
Remove clause 3 and 4 from TNF licenses

branches: 1.14.6; 1.14.8; 1.14.10;
Start detangling lock.h from intr.h. This is likely to cause short term
breakage, but the mess of dependencies has been regularly breaking the
build recently anyhow.

branches: 1.13.4; 1.13.10;
umidi(4) entries plus quirks for Roland UA25, UA4FX and SonicCell.
Submitted by DHOYASHIKI Shinichi via PR kern/36834.

branches: 1.12.12; 1.12.28; 1.12.30; 1.12.32;
fix initializers.

Ankh-Morpork, we have a MIDI driver....

Merge from chap-midi branch, after
~month for review
Comments by thorpej@ drochner@ and Alexandre Ratchov

Incorporated: points by thorpej@ drochner@; preliminary support for
a stats-collecting ioctl suggested by martin@ from comments by A.R.

PR kern/32441 kern/32442 kern/32567 kern/32588 kern/32694 kern/33590
kern/33614 and one instance of kern/32651

ok martin@

branches: 1.10.2; 1.10.4;
PR/33154: DHOYASHIKI Shinichi: umidi quirks for Roland UM-3EX

branches: 1.9.4; 1.9.6; 1.9.8; 1.9.10; 1.9.12;
merge ktrace-lwp.

Add some Roland devices. From kern/30986, DHOYASHIKI Shinichi.

branches: 1.7.2;
- const poisoning
- eliminate variable shadowing

netbsd.org -> NetBSD.org

This was the last commit of this kind to src/sys, which is now totally
"NetBSD.org clean". Thanks for the patiance, and sorry for all the commits.

add usbdevs entries and umidi quirks for Roland USB MIDI devices
contributed in PR kern/18096 by Clemens Ladisch

branches: 1.4.6;
add ROLAND/EDIROL SC-8850/SD-90.

branches: 1.3.8;
add RCSIDs

fix for Roland/EDIROL UM-880.
- add NULL check to UMQ_ISTYPE; sc_quirk is NULL for genuine umidi, but
forgotten to check. Thus, kernel will panic after connect the device.
- fix how to count the number of endpoints in alloc_all_endpoints_genuine().
- add a quirk for the native mode of UM-880.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8;
initial commit of USB midi driver.
- I tested only ROLAND UM-1 and YAMAHA UX256.
These are not conforming to USB-MIDI spec, however these are
similar to USB-MIDI.
- Since I've not yet seen the "genuine" USB-MIDI device,
I cannot test such devices although I wrote the codes for it.
TODO:
- clean up the codes.
- umidi(4) manpage.
- /dev/rmidi? is working well, but /dev/music seems not working correctly.

+#include "opt_usb.h"

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

various umidi clean ups:
- move the contents of umidi{reg,var}.h into umidi.c directly as they
are not referenced by any other file.
- remove the useless include of umidi{reg,var}.h from umidi_quirks.c.
- add reference counting and wait/broadcast support to the IO paths.
- fix the error handling in midi_attach() and midi_open().
- sprinkle KASSERT() in several places.
- drop the local interrupt lock before calling into various parts of
the USB code. fixes lockdebug issues, and likely hangs.
- rename "binded" member as "bound".

with these most of the panics and problems i've seen are gone. there
is still one lockdebug panic to deal with that happens when unplugging
umidi while midiplay(1) is running.

branches: 1.18.14; 1.18.16;
Increase the number of frequencies in the usb_audio_streaming_type1_descriptor
to be the same number that we support elsewhere (AUFMT_MAX_FREQUENCIES).
Set frequency_type to be AUFMT_MAX_FREQUENCIES in the case where a uaudio
device reports more frequencies than we handle.
Fixes a crash in uaudio_chan_ptransfer() because we read uninitialised data
in uaudio_identify_as().

add Roland UM-ONE (essentially, same as Roland UM-1)

from PR/45908 by Tom Ivar Helbekkmo

branches: 1.16.28; 1.16.32;
Constify most umidi-quirk data. Addresses PR#39017.

branches: 1.15.2; 1.15.4; 1.15.6;
Remove clause 3 and 4 from TNF licenses

branches: 1.14.6; 1.14.8; 1.14.10;
Start detangling lock.h from intr.h. This is likely to cause short term
breakage, but the mess of dependencies has been regularly breaking the
build recently anyhow.

branches: 1.13.4; 1.13.10;
umidi(4) entries plus quirks for Roland UA25, UA4FX and SonicCell.
Submitted by DHOYASHIKI Shinichi via PR kern/36834.

branches: 1.12.12; 1.12.28; 1.12.30; 1.12.32;
fix initializers.

Ankh-Morpork, we have a MIDI driver....

Merge from chap-midi branch, after
~month for review
Comments by thorpej@ drochner@ and Alexandre Ratchov

Incorporated: points by thorpej@ drochner@; preliminary support for
a stats-collecting ioctl suggested by martin@ from comments by A.R.

PR kern/32441 kern/32442 kern/32567 kern/32588 kern/32694 kern/33590
kern/33614 and one instance of kern/32651

ok martin@

branches: 1.10.2; 1.10.4;
PR/33154: DHOYASHIKI Shinichi: umidi quirks for Roland UM-3EX

branches: 1.9.4; 1.9.6; 1.9.8; 1.9.10; 1.9.12;
merge ktrace-lwp.

Add some Roland devices. From kern/30986, DHOYASHIKI Shinichi.

branches: 1.7.2;
- const poisoning
- eliminate variable shadowing

netbsd.org -> NetBSD.org

This was the last commit of this kind to src/sys, which is now totally
"NetBSD.org clean". Thanks for the patiance, and sorry for all the commits.

add usbdevs entries and umidi quirks for Roland USB MIDI devices
contributed in PR kern/18096 by Clemens Ladisch

branches: 1.4.6;
add ROLAND/EDIROL SC-8850/SD-90.

branches: 1.3.8;
add RCSIDs

fix for Roland/EDIROL UM-880.
- add NULL check to UMQ_ISTYPE; sc_quirk is NULL for genuine umidi, but
forgotten to check. Thus, kernel will panic after connect the device.
- fix how to count the number of endpoints in alloc_all_endpoints_genuine().
- add a quirk for the native mode of UM-880.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.8;
initial commit of USB midi driver.
- I tested only ROLAND UM-1 and YAMAHA UX256.
These are not conforming to USB-MIDI spec, however these are
similar to USB-MIDI.
- Since I've not yet seen the "genuine" USB-MIDI device,
I cannot test such devices although I wrote the codes for it.
TODO:
- clean up the codes.
- umidi(4) manpage.
- /dev/rmidi? is working well, but /dev/music seems not working correctly.