- make colour depth in fb mode configurable, default to 8bit
- support ioctl(FBIO*CMAP)

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: 1.43.2;
Retire the 'midway' driver. Discussed on tech-net@ recently and also three
years ago, part of removing the network ATM code.

branches: 1.42.16; 1.42.18;
switch to 32bit colour in WSDISPLAYIO_MODE_MAPPED, now X with wsfb will work
Not optimal though - for some reason the framebuffer's endianness in 32bit
colour is wrong and I have no idea (yet) how to change that, so many apps
using xrender will crash.

support hardware acceleration, adapted from OpenBSD
TODO: figure out how to do host blits so we can get away without mapping the
framebuffer

first draft of a driver for SMSI,mgx
More or less an Alliance Semiconductors ProMotion AT24 with some PCI-SBus
glue and 4MB framebuffer. No acceleration yet, just enough wsdisplay/vcons
setup and DAC programming to be functional.

branches: 1.39.14;
- only sync the drawing engine when we're about to access video memory
- use the blitter to draw the cursor
- use the glyphcache to minimize vram access
-> about 15% to 20% speedup

support anti-aliased fonts, glyph caching etc.

branches: 1.37.8; 1.37.18;
- add support for running the console in 8 bit colour
- make shadow fb optional
- use VCONS_DONT_READ if there's no shadow fb

first stab at a driver for the cg12 / matrox cg3
for now it uses the same monochrome overlay as OBP, otherwise it's got the
usual wsdisplay / vcons goodies
TODO:
- fill in mmap and ioctl methods so we can at least run X in monochrome
- figure out where the 24bit buffer is ( and maybe if there's an 8 bit buffer )
- see if we can do any acceleration
- find the DAC registers

branches: 1.35.2;
make latching optional.
The SPARCbook docs claim it's necessary but my 3GX happily works without.

branches: 1.34.2;
tcx doesn't use bt_dac

make the tcx driver do something useful:
- attach a wsdisplay
- make it work with an S24
- accelerate scrolling and character drawing
This isn't quite finished yet, it works fine as a console but most things
X will need are not functional right now.

Add wscons support

branches: 1.31.26; 1.31.34; 1.31.36; 1.31.40; 1.31.44;
add a driver for Fujitsu AG-10e graphics boards
Features so far:
- use the blitter for scrolling and solid fills
- the usual wscons stuff, virtual consoles etc.
Things missing:
- /dev/fb* support
- XFree86 support although wsfb in 8bit should work
- hardware cursor support for X
- character drawing in hardware so we can run the blitter completely
asynchronous

branches: 1.30.4; 1.30.6;
pull in mulaw with dbri
Although dbri supports mulaw and a-law in hardware we can unly use it in mono
so for 8bit stereo we need to use sw encoding

branches: 1.29.4;
add an sbus frontend fro genfb
in theory this should work on any SBus framebuffer
tested on various cgsix and p9100, needs to be tested on more hardware

- add dummy input methods so we don't panic if someone tries to read
- add dummy input mixer controls
- restart tx DMA on PWR_RESUME
- power up on PWR_RESUME only if we really have to
- add an option to control wether to spin or sleep when waiting for the chip
to switch between data and control mode

branches: 1.27.2;
don't pull in stuff we don't actually use:
- nuke mulaw from dbri
- nuke rasops16 and rasops32 from pnozz

branches: 1.26.4; 1.26.8;
Snapshot of work in progress gem @ sbus attachement. Don't use at home
yet!
Thanks to Steve Rikli for providing hardware and test equipement,
and to uwe for a lot help understanding the hardware.

branches: 1.25.10; 1.25.12;
keep the chip powered down when not in use on machines that support it
( like SPARCbooks ) - needs testing on other machines
tested on my SPARCbook 3GX

this should have been committed with p9100.*
add the vcons attribute to pnozz

branches: 1.23.4; 1.23.6; 1.23.8; 1.23.10;
merge ktrace-lwp.

driver for the audio part of SUNW,DBRI ISDN/audio controllers

branches: 1.21.2;
Added:
- wscons support
- acceleration
- virtual consoles
- colour
- made cg3 emulation optional for native XFree driver

branches: 1.20.2;
nuke trailing whitespace

branches: 1.19.4; 1.19.6;
Hauke Fath's port of the openbsd SUNW,spif driver from PR#26061.
the driver was originally written by Jason L. Wright.

XXX: i haven't tested this on sparc64 at all...

branches: 1.18.6;
Driver for the Sun ZX/Leo framebuffer. This would be called leo, but the
amiga port already has a driver by that name.

frontend driver for the 16 port serial card by aurora technologies. this
doesn't quite work yet -- interrupt acknowledgement is hosed (and thus the
device keeps interrupting). uses the newly commited cd18xx backend.

branches: 1.16.2; 1.16.4; 1.16.6;
Remove esp specific function from ddb when esp @ sbus is not included
in the kernel config. Makes compiling sbus-less kernels possible again.

Declare drivers moved here from arch/sparc.

Move esp declaration to conf/files.

branches: 1.13.2;
Add the Sbus front-end for the HME driver.

split sbus audiocs code up so we can share it with the ebus. XXX ebus DMA is probably different.

branches: 1.11.4;
Add `qe' network interface device.

Use `pcmciabus' to attach the Sbus to PCMCIA bridge.

Define STP4020 chipset driver by its nickname `nell'.
XXX - also define a `pcic' attribute here, so we can attach a pcmcia bus

Make dma_sbus.c dependent on dma_sbus attribute.

Add `bpp' device: the parallel port glued onto the LSI64854 DMA controller.

Use bus_space_*() to access device registers.
Add `esp' and `le' DMA engine.

Add audiocs.

move isp_sbus attachment into /sys/dev/sbus.

Magma driver has been moved to <dev/sbus>

Add `le at sbus', `le at lebuffer' and `en at sbus'.

sbus configuration file.

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: 1.43.2;
Retire the 'midway' driver. Discussed on tech-net@ recently and also three
years ago, part of removing the network ATM code.

branches: 1.42.16;
switch to 32bit colour in WSDISPLAYIO_MODE_MAPPED, now X with wsfb will work
Not optimal though - for some reason the framebuffer's endianness in 32bit
colour is wrong and I have no idea (yet) how to change that, so many apps
using xrender will crash.

support hardware acceleration, adapted from OpenBSD
TODO: figure out how to do host blits so we can get away without mapping the
framebuffer

first draft of a driver for SMSI,mgx
More or less an Alliance Semiconductors ProMotion AT24 with some PCI-SBus
glue and 4MB framebuffer. No acceleration yet, just enough wsdisplay/vcons
setup and DAC programming to be functional.

branches: 1.39.14;
- only sync the drawing engine when we're about to access video memory
- use the blitter to draw the cursor
- use the glyphcache to minimize vram access
-> about 15% to 20% speedup

support anti-aliased fonts, glyph caching etc.

branches: 1.37.8; 1.37.18;
- add support for running the console in 8 bit colour
- make shadow fb optional
- use VCONS_DONT_READ if there's no shadow fb

first stab at a driver for the cg12 / matrox cg3
for now it uses the same monochrome overlay as OBP, otherwise it's got the
usual wsdisplay / vcons goodies
TODO:
- fill in mmap and ioctl methods so we can at least run X in monochrome
- figure out where the 24bit buffer is ( and maybe if there's an 8 bit buffer )
- see if we can do any acceleration
- find the DAC registers

branches: 1.35.2;
make latching optional.
The SPARCbook docs claim it's necessary but my 3GX happily works without.

branches: 1.34.2;
tcx doesn't use bt_dac

make the tcx driver do something useful:
- attach a wsdisplay
- make it work with an S24
- accelerate scrolling and character drawing
This isn't quite finished yet, it works fine as a console but most things
X will need are not functional right now.

Add wscons support

branches: 1.31.26; 1.31.34; 1.31.36; 1.31.40; 1.31.44;
add a driver for Fujitsu AG-10e graphics boards
Features so far:
- use the blitter for scrolling and solid fills
- the usual wscons stuff, virtual consoles etc.
Things missing:
- /dev/fb* support
- XFree86 support although wsfb in 8bit should work
- hardware cursor support for X
- character drawing in hardware so we can run the blitter completely
asynchronous

branches: 1.30.4; 1.30.6;
pull in mulaw with dbri
Although dbri supports mulaw and a-law in hardware we can unly use it in mono
so for 8bit stereo we need to use sw encoding

branches: 1.29.4;
add an sbus frontend fro genfb
in theory this should work on any SBus framebuffer
tested on various cgsix and p9100, needs to be tested on more hardware

- add dummy input methods so we don't panic if someone tries to read
- add dummy input mixer controls
- restart tx DMA on PWR_RESUME
- power up on PWR_RESUME only if we really have to
- add an option to control wether to spin or sleep when waiting for the chip
to switch between data and control mode

branches: 1.27.2;
don't pull in stuff we don't actually use:
- nuke mulaw from dbri
- nuke rasops16 and rasops32 from pnozz

branches: 1.26.4; 1.26.8;
Snapshot of work in progress gem @ sbus attachement. Don't use at home
yet!
Thanks to Steve Rikli for providing hardware and test equipement,
and to uwe for a lot help understanding the hardware.

branches: 1.25.10; 1.25.12;
keep the chip powered down when not in use on machines that support it
( like SPARCbooks ) - needs testing on other machines
tested on my SPARCbook 3GX

this should have been committed with p9100.*
add the vcons attribute to pnozz

branches: 1.23.4; 1.23.6; 1.23.8; 1.23.10;
merge ktrace-lwp.

driver for the audio part of SUNW,DBRI ISDN/audio controllers

branches: 1.21.2;
Added:
- wscons support
- acceleration
- virtual consoles
- colour
- made cg3 emulation optional for native XFree driver

branches: 1.20.2;
nuke trailing whitespace

branches: 1.19.4; 1.19.6;
Hauke Fath's port of the openbsd SUNW,spif driver from PR#26061.
the driver was originally written by Jason L. Wright.

XXX: i haven't tested this on sparc64 at all...

branches: 1.18.6;
Driver for the Sun ZX/Leo framebuffer. This would be called leo, but the
amiga port already has a driver by that name.

frontend driver for the 16 port serial card by aurora technologies. this
doesn't quite work yet -- interrupt acknowledgement is hosed (and thus the
device keeps interrupting). uses the newly commited cd18xx backend.

branches: 1.16.2; 1.16.4; 1.16.6;
Remove esp specific function from ddb when esp @ sbus is not included
in the kernel config. Makes compiling sbus-less kernels possible again.

Declare drivers moved here from arch/sparc.

Move esp declaration to conf/files.

branches: 1.13.2;
Add the Sbus front-end for the HME driver.

split sbus audiocs code up so we can share it with the ebus. XXX ebus DMA is probably different.

branches: 1.11.4;
Add `qe' network interface device.

Use `pcmciabus' to attach the Sbus to PCMCIA bridge.

Define STP4020 chipset driver by its nickname `nell'.
XXX - also define a `pcic' attribute here, so we can attach a pcmcia bus

Make dma_sbus.c dependent on dma_sbus attribute.

Add `bpp' device: the parallel port glued onto the LSI64854 DMA controller.

Use bus_space_*() to access device registers.
Add `esp' and `le' DMA engine.

Add audiocs.

move isp_sbus attachment into /sys/dev/sbus.

Magma driver has been moved to <dev/sbus>

Add `le at sbus', `le at lebuffer' and `en at sbus'.

sbus configuration file.

Retire the 'midway' driver. Discussed on tech-net@ recently and also three
years ago, part of removing the network ATM code.

branches: 1.42.16;
switch to 32bit colour in WSDISPLAYIO_MODE_MAPPED, now X with wsfb will work
Not optimal though - for some reason the framebuffer's endianness in 32bit
colour is wrong and I have no idea (yet) how to change that, so many apps
using xrender will crash.

support hardware acceleration, adapted from OpenBSD
TODO: figure out how to do host blits so we can get away without mapping the
framebuffer

first draft of a driver for SMSI,mgx
More or less an Alliance Semiconductors ProMotion AT24 with some PCI-SBus
glue and 4MB framebuffer. No acceleration yet, just enough wsdisplay/vcons
setup and DAC programming to be functional.

branches: 1.39.14;
- only sync the drawing engine when we're about to access video memory
- use the blitter to draw the cursor
- use the glyphcache to minimize vram access
-> about 15% to 20% speedup

support anti-aliased fonts, glyph caching etc.

branches: 1.37.8; 1.37.18;
- add support for running the console in 8 bit colour
- make shadow fb optional
- use VCONS_DONT_READ if there's no shadow fb

first stab at a driver for the cg12 / matrox cg3
for now it uses the same monochrome overlay as OBP, otherwise it's got the
usual wsdisplay / vcons goodies
TODO:
- fill in mmap and ioctl methods so we can at least run X in monochrome
- figure out where the 24bit buffer is ( and maybe if there's an 8 bit buffer )
- see if we can do any acceleration
- find the DAC registers

branches: 1.35.2;
make latching optional.
The SPARCbook docs claim it's necessary but my 3GX happily works without.

branches: 1.34.2;
tcx doesn't use bt_dac

make the tcx driver do something useful:
- attach a wsdisplay
- make it work with an S24
- accelerate scrolling and character drawing
This isn't quite finished yet, it works fine as a console but most things
X will need are not functional right now.

Add wscons support

branches: 1.31.26; 1.31.34; 1.31.36; 1.31.40; 1.31.44;
add a driver for Fujitsu AG-10e graphics boards
Features so far:
- use the blitter for scrolling and solid fills
- the usual wscons stuff, virtual consoles etc.
Things missing:
- /dev/fb* support
- XFree86 support although wsfb in 8bit should work
- hardware cursor support for X
- character drawing in hardware so we can run the blitter completely
asynchronous

branches: 1.30.4; 1.30.6;
pull in mulaw with dbri
Although dbri supports mulaw and a-law in hardware we can unly use it in mono
so for 8bit stereo we need to use sw encoding

branches: 1.29.4;
add an sbus frontend fro genfb
in theory this should work on any SBus framebuffer
tested on various cgsix and p9100, needs to be tested on more hardware

- add dummy input methods so we don't panic if someone tries to read
- add dummy input mixer controls
- restart tx DMA on PWR_RESUME
- power up on PWR_RESUME only if we really have to
- add an option to control wether to spin or sleep when waiting for the chip
to switch between data and control mode

branches: 1.27.2;
don't pull in stuff we don't actually use:
- nuke mulaw from dbri
- nuke rasops16 and rasops32 from pnozz

branches: 1.26.4; 1.26.8;
Snapshot of work in progress gem @ sbus attachement. Don't use at home
yet!
Thanks to Steve Rikli for providing hardware and test equipement,
and to uwe for a lot help understanding the hardware.

branches: 1.25.10; 1.25.12;
keep the chip powered down when not in use on machines that support it
( like SPARCbooks ) - needs testing on other machines
tested on my SPARCbook 3GX

this should have been committed with p9100.*
add the vcons attribute to pnozz

branches: 1.23.4; 1.23.6; 1.23.8; 1.23.10;
merge ktrace-lwp.

driver for the audio part of SUNW,DBRI ISDN/audio controllers

branches: 1.21.2;
Added:
- wscons support
- acceleration
- virtual consoles
- colour
- made cg3 emulation optional for native XFree driver

branches: 1.20.2;
nuke trailing whitespace

branches: 1.19.4; 1.19.6;
Hauke Fath's port of the openbsd SUNW,spif driver from PR#26061.
the driver was originally written by Jason L. Wright.

XXX: i haven't tested this on sparc64 at all...

branches: 1.18.6;
Driver for the Sun ZX/Leo framebuffer. This would be called leo, but the
amiga port already has a driver by that name.

frontend driver for the 16 port serial card by aurora technologies. this
doesn't quite work yet -- interrupt acknowledgement is hosed (and thus the
device keeps interrupting). uses the newly commited cd18xx backend.

branches: 1.16.2; 1.16.4; 1.16.6;
Remove esp specific function from ddb when esp @ sbus is not included
in the kernel config. Makes compiling sbus-less kernels possible again.

Declare drivers moved here from arch/sparc.

Move esp declaration to conf/files.

branches: 1.13.2;
Add the Sbus front-end for the HME driver.

split sbus audiocs code up so we can share it with the ebus. XXX ebus DMA is probably different.

branches: 1.11.4;
Add `qe' network interface device.

Use `pcmciabus' to attach the Sbus to PCMCIA bridge.

Define STP4020 chipset driver by its nickname `nell'.
XXX - also define a `pcic' attribute here, so we can attach a pcmcia bus

Make dma_sbus.c dependent on dma_sbus attribute.

Add `bpp' device: the parallel port glued onto the LSI64854 DMA controller.

Use bus_space_*() to access device registers.
Add `esp' and `le' DMA engine.

Add audiocs.

move isp_sbus attachment into /sys/dev/sbus.

Magma driver has been moved to <dev/sbus>

Add `le at sbus', `le at lebuffer' and `en at sbus'.

sbus configuration file.

switch to 32bit colour in WSDISPLAYIO_MODE_MAPPED, now X with wsfb will work
Not optimal though - for some reason the framebuffer's endianness in 32bit
colour is wrong and I have no idea (yet) how to change that, so many apps
using xrender will crash.

support hardware acceleration, adapted from OpenBSD
TODO: figure out how to do host blits so we can get away without mapping the
framebuffer

first draft of a driver for SMSI,mgx
More or less an Alliance Semiconductors ProMotion AT24 with some PCI-SBus
glue and 4MB framebuffer. No acceleration yet, just enough wsdisplay/vcons
setup and DAC programming to be functional.

branches: 1.39.14;
- only sync the drawing engine when we're about to access video memory
- use the blitter to draw the cursor
- use the glyphcache to minimize vram access
-> about 15% to 20% speedup

support anti-aliased fonts, glyph caching etc.

branches: 1.37.8; 1.37.18;
- add support for running the console in 8 bit colour
- make shadow fb optional
- use VCONS_DONT_READ if there's no shadow fb

first stab at a driver for the cg12 / matrox cg3
for now it uses the same monochrome overlay as OBP, otherwise it's got the
usual wsdisplay / vcons goodies
TODO:
- fill in mmap and ioctl methods so we can at least run X in monochrome
- figure out where the 24bit buffer is ( and maybe if there's an 8 bit buffer )
- see if we can do any acceleration
- find the DAC registers

branches: 1.35.2;
make latching optional.
The SPARCbook docs claim it's necessary but my 3GX happily works without.

branches: 1.34.2;
tcx doesn't use bt_dac

make the tcx driver do something useful:
- attach a wsdisplay
- make it work with an S24
- accelerate scrolling and character drawing
This isn't quite finished yet, it works fine as a console but most things
X will need are not functional right now.

Add wscons support

branches: 1.31.26; 1.31.34; 1.31.36; 1.31.40; 1.31.44;
add a driver for Fujitsu AG-10e graphics boards
Features so far:
- use the blitter for scrolling and solid fills
- the usual wscons stuff, virtual consoles etc.
Things missing:
- /dev/fb* support
- XFree86 support although wsfb in 8bit should work
- hardware cursor support for X
- character drawing in hardware so we can run the blitter completely
asynchronous

branches: 1.30.4; 1.30.6;
pull in mulaw with dbri
Although dbri supports mulaw and a-law in hardware we can unly use it in mono
so for 8bit stereo we need to use sw encoding

branches: 1.29.4;
add an sbus frontend fro genfb
in theory this should work on any SBus framebuffer
tested on various cgsix and p9100, needs to be tested on more hardware

- add dummy input methods so we don't panic if someone tries to read
- add dummy input mixer controls
- restart tx DMA on PWR_RESUME
- power up on PWR_RESUME only if we really have to
- add an option to control wether to spin or sleep when waiting for the chip
to switch between data and control mode

branches: 1.27.2;
don't pull in stuff we don't actually use:
- nuke mulaw from dbri
- nuke rasops16 and rasops32 from pnozz

branches: 1.26.4; 1.26.8;
Snapshot of work in progress gem @ sbus attachement. Don't use at home
yet!
Thanks to Steve Rikli for providing hardware and test equipement,
and to uwe for a lot help understanding the hardware.

branches: 1.25.10; 1.25.12;
keep the chip powered down when not in use on machines that support it
( like SPARCbooks ) - needs testing on other machines
tested on my SPARCbook 3GX

this should have been committed with p9100.*
add the vcons attribute to pnozz

branches: 1.23.4; 1.23.6; 1.23.8; 1.23.10;
merge ktrace-lwp.

driver for the audio part of SUNW,DBRI ISDN/audio controllers

branches: 1.21.2;
Added:
- wscons support
- acceleration
- virtual consoles
- colour
- made cg3 emulation optional for native XFree driver

branches: 1.20.2;
nuke trailing whitespace

branches: 1.19.4; 1.19.6;
Hauke Fath's port of the openbsd SUNW,spif driver from PR#26061.
the driver was originally written by Jason L. Wright.

XXX: i haven't tested this on sparc64 at all...

branches: 1.18.6;
Driver for the Sun ZX/Leo framebuffer. This would be called leo, but the
amiga port already has a driver by that name.

frontend driver for the 16 port serial card by aurora technologies. this
doesn't quite work yet -- interrupt acknowledgement is hosed (and thus the
device keeps interrupting). uses the newly commited cd18xx backend.

branches: 1.16.2; 1.16.4; 1.16.6;
Remove esp specific function from ddb when esp @ sbus is not included
in the kernel config. Makes compiling sbus-less kernels possible again.

Declare drivers moved here from arch/sparc.

Move esp declaration to conf/files.

branches: 1.13.2;
Add the Sbus front-end for the HME driver.

split sbus audiocs code up so we can share it with the ebus. XXX ebus DMA is probably different.

branches: 1.11.4;
Add `qe' network interface device.

Use `pcmciabus' to attach the Sbus to PCMCIA bridge.

Define STP4020 chipset driver by its nickname `nell'.
XXX - also define a `pcic' attribute here, so we can attach a pcmcia bus

Make dma_sbus.c dependent on dma_sbus attribute.

Add `bpp' device: the parallel port glued onto the LSI64854 DMA controller.

Use bus_space_*() to access device registers.
Add `esp' and `le' DMA engine.

Add audiocs.

move isp_sbus attachment into /sys/dev/sbus.

Magma driver has been moved to <dev/sbus>

Add `le at sbus', `le at lebuffer' and `en at sbus'.

sbus configuration file.