pass NULL to the second dbdma_alloc() expected argement.
it was not adjusted after it acquired one 7 years ago.

fixes ZS_TXDMA enabled build for macppc.

some whitespace cleanup for debug printf calls.

change zsprintf to printf. It was defined as printf in include/z8530var.h
up to rev 1.4, then removed with conversion to MI 8530 SCC driver back in 1997.

Fixes build with ZSMACDEBUG option enabled for mac68k and macppc.

powerpc: Sprinkle "memory" clobbers on eieio and nearby asm blocks.

Otherwise the compiler may reorder these around loads and stores,
which mostly defeats the purpose. `asm volatile' just ensures the
instruction isn't _deleted_; it may still move around.

PR port-macppc/56091: on G5 macs we currently can not easily make
early serial console work, so keep the OF based "failsafe" console
but note that we would like to switch over.
Once zs attaches, use the new device mapping and do a belated init
of the zs console globals, and then switch over to real zs based
serial console.

Add missing double p and d for stopped and overriden accordingly.
Fix few more typos along the way, mainly in copy-pasted comments.

Merge thorpej-cfargs2.

branches: 1.52.8;
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: 1.51.2;
Convert to intr_establish_xname().

branches: 1.50.66;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Drop 3rd and 4th clauses. Approved by gwr@ and wrstuden@ (copyright
holders).

Fix attach messages. (extra colons, misplaced newline etc.)

branches: 1.47.2; 1.47.4; 1.47.6;
use device_lookup_private to get softc

branches: 1.46.2; 1.46.4; 1.46.6; 1.46.8;
Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.

branches: 1.45.14;
Use the softint API.

Call zs_lock_init() to set up the chanstate's lock.

branches: 1.43.2;
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: 1.42.2; 1.42.10; 1.42.18; 1.42.20; 1.42.22; 1.42.24;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.41.4;
s/independant/independent/, from Zafer.

Remove a function declaration of zssoft() which was
inside #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS.

Pass zsc_softc to zshard() directly rather than searching it in zshard().

Checking all zsc units in zshard() is efficient only on ports
which share one interrupt among all zsc units, like sparc or sun3.
On such ports, zshard() is established as a handler only once.

XXX1: more other MD zs drivers should be fixed similarly.
XXX2: zsc on macppc has independent interrupts for channel A and B,
but MI z8530sc can't handle such configuration.

macppc always defines __HAVE_GENERIC_SOFT_INTERRUPTS,
so remove #ifdef/#ifndefs against it.

branches: 1.37.2; 1.37.4;
back out previous commit since it breaks console output when not using a
serial console

branches: 1.36.2;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.35.4; 1.35.8;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.33.2;
cleanup const/volatile/shadowing

Initialize zsconschannel to -1 so that it can't matched unless zscninit
is explicitly called to set it up.

branches: 1.31.2;
use a global variable to ensure that only one instance is configured
rather than requiring that its unit number be zero.
simplify by not pretending that powermacs can have more than 1 zsc.

de-__P, remove register, ansify.

Add latent generic soft interrupt support.

netbsd.org -> NetBSD.org

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

__KERNEL_RCSID()

branches: 1.26.2;
Add prototypes for ZS_TXDMA functions.
XXX Maybe we should have DMA hooks in MI z8530tty.

Provide locking required by the interrupt handlers running at IPL_SERIAL.

Use aprint_normal() for cfprint routines.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

branches: 1.20.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

add support for kgdb over zs

branches: 1.18.6;
bcopy -> memcpy, bzero -> memset, bcmp -> memcmp.
Reviewed by Matt Thomas, ok'd by Tsubai Masanari.

branches: 1.17.2;
`existent', not `existant'

Make macppc compile by default with -Wall -Wmissing-prototype in addition
to its currently enabled warnings. For the lack of a better place, most
global function prototype wound up in <machine/autoconf.h> unless there
was a better place for them. ofb_* structs renamed to offb_* to avoid
conflict with ofb_softc in <dev/ofw/openfirm.h>

branches: 1.15.4;
* Access hardware directly in zscn* instead of calling OF.
* Clean up.

branches: 1.14.2;
- Implement cnbell() -- ring the console bell. The cn_bell entrypoint
is optional.
- Add cn_bell to statically allocated consdevs as appropriate.

Don't use hardcoded speed value when this is a console. Instead, read
from zs. (because OF-3.x uses 57600 bps)

branches: 1.12.8;
Oops. macppc doesn't use PCLK as a baud rate source.

Minor cleanup.
Make the initializer for BAUDLO depend on PCLK directly; it was incorrect on
some ports where PCLK is not 4.9152MHz.
XXX Is the default value actually used?

Don't set DCD_IE in the frontends. KGDB doesn't even use DCD, and the tty
frontends get it from zsparam() anyway.

Fix a bug of last change.

Use "interrupt" property if "AAPL,interrupt" is not found.

Turn on support for 115,200 and 230,400 baud. Should work, but might
generate lots of interupts (one per char or so) if we don't have
DMA set up.

Back out previous change.

Enable 115200 and (untested)230400 bps.

Add support for G3 Mac.

defopt DDB.

Console support.

Initial import of macppc port.

powerpc: Sprinkle "memory" clobbers on eieio and nearby asm blocks.

Otherwise the compiler may reorder these around loads and stores,
which mostly defeats the purpose. `asm volatile' just ensures the
instruction isn't _deleted_; it may still move around.

PR port-macppc/56091: on G5 macs we currently can not easily make
early serial console work, so keep the OF based "failsafe" console
but note that we would like to switch over.
Once zs attaches, use the new device mapping and do a belated init
of the zs console globals, and then switch over to real zs based
serial console.

Add missing double p and d for stopped and overriden accordingly.
Fix few more typos along the way, mainly in copy-pasted comments.

Merge thorpej-cfargs2.

branches: 1.52.8;
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: 1.51.2;
Convert to intr_establish_xname().

branches: 1.50.66;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Drop 3rd and 4th clauses. Approved by gwr@ and wrstuden@ (copyright
holders).

Fix attach messages. (extra colons, misplaced newline etc.)

branches: 1.47.2; 1.47.4; 1.47.6;
use device_lookup_private to get softc

branches: 1.46.2; 1.46.4; 1.46.6; 1.46.8;
Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.

branches: 1.45.14;
Use the softint API.

Call zs_lock_init() to set up the chanstate's lock.

branches: 1.43.2;
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: 1.42.2; 1.42.10; 1.42.18; 1.42.20; 1.42.22; 1.42.24;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.41.4;
s/independant/independent/, from Zafer.

Remove a function declaration of zssoft() which was
inside #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS.

Pass zsc_softc to zshard() directly rather than searching it in zshard().

Checking all zsc units in zshard() is efficient only on ports
which share one interrupt among all zsc units, like sparc or sun3.
On such ports, zshard() is established as a handler only once.

XXX1: more other MD zs drivers should be fixed similarly.
XXX2: zsc on macppc has independent interrupts for channel A and B,
but MI z8530sc can't handle such configuration.

macppc always defines __HAVE_GENERIC_SOFT_INTERRUPTS,
so remove #ifdef/#ifndefs against it.

branches: 1.37.2; 1.37.4;
back out previous commit since it breaks console output when not using a
serial console

branches: 1.36.2;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.35.4; 1.35.8;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.33.2;
cleanup const/volatile/shadowing

Initialize zsconschannel to -1 so that it can't matched unless zscninit
is explicitly called to set it up.

branches: 1.31.2;
use a global variable to ensure that only one instance is configured
rather than requiring that its unit number be zero.
simplify by not pretending that powermacs can have more than 1 zsc.

de-__P, remove register, ansify.

Add latent generic soft interrupt support.

netbsd.org -> NetBSD.org

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

__KERNEL_RCSID()

branches: 1.26.2;
Add prototypes for ZS_TXDMA functions.
XXX Maybe we should have DMA hooks in MI z8530tty.

Provide locking required by the interrupt handlers running at IPL_SERIAL.

Use aprint_normal() for cfprint routines.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

branches: 1.20.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

add support for kgdb over zs

branches: 1.18.6;
bcopy -> memcpy, bzero -> memset, bcmp -> memcmp.
Reviewed by Matt Thomas, ok'd by Tsubai Masanari.

branches: 1.17.2;
`existent', not `existant'

Make macppc compile by default with -Wall -Wmissing-prototype in addition
to its currently enabled warnings. For the lack of a better place, most
global function prototype wound up in <machine/autoconf.h> unless there
was a better place for them. ofb_* structs renamed to offb_* to avoid
conflict with ofb_softc in <dev/ofw/openfirm.h>

branches: 1.15.4;
* Access hardware directly in zscn* instead of calling OF.
* Clean up.

branches: 1.14.2;
- Implement cnbell() -- ring the console bell. The cn_bell entrypoint
is optional.
- Add cn_bell to statically allocated consdevs as appropriate.

Don't use hardcoded speed value when this is a console. Instead, read
from zs. (because OF-3.x uses 57600 bps)

branches: 1.12.8;
Oops. macppc doesn't use PCLK as a baud rate source.

Minor cleanup.
Make the initializer for BAUDLO depend on PCLK directly; it was incorrect on
some ports where PCLK is not 4.9152MHz.
XXX Is the default value actually used?

Don't set DCD_IE in the frontends. KGDB doesn't even use DCD, and the tty
frontends get it from zsparam() anyway.

Fix a bug of last change.

Use "interrupt" property if "AAPL,interrupt" is not found.

Turn on support for 115,200 and 230,400 baud. Should work, but might
generate lots of interupts (one per char or so) if we don't have
DMA set up.

Back out previous change.

Enable 115200 and (untested)230400 bps.

Add support for G3 Mac.

defopt DDB.

Console support.

Initial import of macppc port.

PR port-macppc/56091: on G5 macs we currently can not easily make
early serial console work, so keep the OF based "failsafe" console
but note that we would like to switch over.
Once zs attaches, use the new device mapping and do a belated init
of the zs console globals, and then switch over to real zs based
serial console.

Add missing double p and d for stopped and overriden accordingly.
Fix few more typos along the way, mainly in copy-pasted comments.

Merge thorpej-cfargs2.

branches: 1.52.8;
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: 1.51.2;
Convert to intr_establish_xname().

branches: 1.50.66;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Drop 3rd and 4th clauses. Approved by gwr@ and wrstuden@ (copyright
holders).

Fix attach messages. (extra colons, misplaced newline etc.)

branches: 1.47.2; 1.47.4; 1.47.6;
use device_lookup_private to get softc

branches: 1.46.2; 1.46.4; 1.46.6; 1.46.8;
Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.

branches: 1.45.14;
Use the softint API.

Call zs_lock_init() to set up the chanstate's lock.

branches: 1.43.2;
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: 1.42.2; 1.42.10; 1.42.18; 1.42.20; 1.42.22; 1.42.24;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.41.4;
s/independant/independent/, from Zafer.

Remove a function declaration of zssoft() which was
inside #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS.

Pass zsc_softc to zshard() directly rather than searching it in zshard().

Checking all zsc units in zshard() is efficient only on ports
which share one interrupt among all zsc units, like sparc or sun3.
On such ports, zshard() is established as a handler only once.

XXX1: more other MD zs drivers should be fixed similarly.
XXX2: zsc on macppc has independent interrupts for channel A and B,
but MI z8530sc can't handle such configuration.

macppc always defines __HAVE_GENERIC_SOFT_INTERRUPTS,
so remove #ifdef/#ifndefs against it.

branches: 1.37.2; 1.37.4;
back out previous commit since it breaks console output when not using a
serial console

branches: 1.36.2;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.35.4; 1.35.8;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.33.2;
cleanup const/volatile/shadowing

Initialize zsconschannel to -1 so that it can't matched unless zscninit
is explicitly called to set it up.

branches: 1.31.2;
use a global variable to ensure that only one instance is configured
rather than requiring that its unit number be zero.
simplify by not pretending that powermacs can have more than 1 zsc.

de-__P, remove register, ansify.

Add latent generic soft interrupt support.

netbsd.org -> NetBSD.org

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

__KERNEL_RCSID()

branches: 1.26.2;
Add prototypes for ZS_TXDMA functions.
XXX Maybe we should have DMA hooks in MI z8530tty.

Provide locking required by the interrupt handlers running at IPL_SERIAL.

Use aprint_normal() for cfprint routines.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

branches: 1.20.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

add support for kgdb over zs

branches: 1.18.6;
bcopy -> memcpy, bzero -> memset, bcmp -> memcmp.
Reviewed by Matt Thomas, ok'd by Tsubai Masanari.

branches: 1.17.2;
`existent', not `existant'

Make macppc compile by default with -Wall -Wmissing-prototype in addition
to its currently enabled warnings. For the lack of a better place, most
global function prototype wound up in <machine/autoconf.h> unless there
was a better place for them. ofb_* structs renamed to offb_* to avoid
conflict with ofb_softc in <dev/ofw/openfirm.h>

branches: 1.15.4;
* Access hardware directly in zscn* instead of calling OF.
* Clean up.

branches: 1.14.2;
- Implement cnbell() -- ring the console bell. The cn_bell entrypoint
is optional.
- Add cn_bell to statically allocated consdevs as appropriate.

Don't use hardcoded speed value when this is a console. Instead, read
from zs. (because OF-3.x uses 57600 bps)

branches: 1.12.8;
Oops. macppc doesn't use PCLK as a baud rate source.

Minor cleanup.
Make the initializer for BAUDLO depend on PCLK directly; it was incorrect on
some ports where PCLK is not 4.9152MHz.
XXX Is the default value actually used?

Don't set DCD_IE in the frontends. KGDB doesn't even use DCD, and the tty
frontends get it from zsparam() anyway.

Fix a bug of last change.

Use "interrupt" property if "AAPL,interrupt" is not found.

Turn on support for 115,200 and 230,400 baud. Should work, but might
generate lots of interupts (one per char or so) if we don't have
DMA set up.

Back out previous change.

Enable 115200 and (untested)230400 bps.

Add support for G3 Mac.

defopt DDB.

Console support.

Initial import of macppc port.

Add missing double p and d for stopped and overriden accordingly.
Fix few more typos along the way, mainly in copy-pasted comments.

Merge thorpej-cfargs2.

branches: 1.52.8;
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: 1.51.2;
Convert to intr_establish_xname().

branches: 1.50.66;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Drop 3rd and 4th clauses. Approved by gwr@ and wrstuden@ (copyright
holders).

Fix attach messages. (extra colons, misplaced newline etc.)

branches: 1.47.2; 1.47.4; 1.47.6;
use device_lookup_private to get softc

branches: 1.46.2; 1.46.4; 1.46.6; 1.46.8;
Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.

branches: 1.45.14;
Use the softint API.

Call zs_lock_init() to set up the chanstate's lock.

branches: 1.43.2;
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: 1.42.2; 1.42.10; 1.42.18; 1.42.20; 1.42.22; 1.42.24;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.41.4;
s/independant/independent/, from Zafer.

Remove a function declaration of zssoft() which was
inside #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS.

Pass zsc_softc to zshard() directly rather than searching it in zshard().

Checking all zsc units in zshard() is efficient only on ports
which share one interrupt among all zsc units, like sparc or sun3.
On such ports, zshard() is established as a handler only once.

XXX1: more other MD zs drivers should be fixed similarly.
XXX2: zsc on macppc has independent interrupts for channel A and B,
but MI z8530sc can't handle such configuration.

macppc always defines __HAVE_GENERIC_SOFT_INTERRUPTS,
so remove #ifdef/#ifndefs against it.

branches: 1.37.2; 1.37.4;
back out previous commit since it breaks console output when not using a
serial console

branches: 1.36.2;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.35.4; 1.35.8;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.33.2;
cleanup const/volatile/shadowing

Initialize zsconschannel to -1 so that it can't matched unless zscninit
is explicitly called to set it up.

branches: 1.31.2;
use a global variable to ensure that only one instance is configured
rather than requiring that its unit number be zero.
simplify by not pretending that powermacs can have more than 1 zsc.

de-__P, remove register, ansify.

Add latent generic soft interrupt support.

netbsd.org -> NetBSD.org

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

__KERNEL_RCSID()

branches: 1.26.2;
Add prototypes for ZS_TXDMA functions.
XXX Maybe we should have DMA hooks in MI z8530tty.

Provide locking required by the interrupt handlers running at IPL_SERIAL.

Use aprint_normal() for cfprint routines.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

branches: 1.20.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

add support for kgdb over zs

branches: 1.18.6;
bcopy -> memcpy, bzero -> memset, bcmp -> memcmp.
Reviewed by Matt Thomas, ok'd by Tsubai Masanari.

branches: 1.17.2;
`existent', not `existant'

Make macppc compile by default with -Wall -Wmissing-prototype in addition
to its currently enabled warnings. For the lack of a better place, most
global function prototype wound up in <machine/autoconf.h> unless there
was a better place for them. ofb_* structs renamed to offb_* to avoid
conflict with ofb_softc in <dev/ofw/openfirm.h>

branches: 1.15.4;
* Access hardware directly in zscn* instead of calling OF.
* Clean up.

branches: 1.14.2;
- Implement cnbell() -- ring the console bell. The cn_bell entrypoint
is optional.
- Add cn_bell to statically allocated consdevs as appropriate.

Don't use hardcoded speed value when this is a console. Instead, read
from zs. (because OF-3.x uses 57600 bps)

branches: 1.12.8;
Oops. macppc doesn't use PCLK as a baud rate source.

Minor cleanup.
Make the initializer for BAUDLO depend on PCLK directly; it was incorrect on
some ports where PCLK is not 4.9152MHz.
XXX Is the default value actually used?

Don't set DCD_IE in the frontends. KGDB doesn't even use DCD, and the tty
frontends get it from zsparam() anyway.

Fix a bug of last change.

Use "interrupt" property if "AAPL,interrupt" is not found.

Turn on support for 115,200 and 230,400 baud. Should work, but might
generate lots of interupts (one per char or so) if we don't have
DMA set up.

Back out previous change.

Enable 115200 and (untested)230400 bps.

Add support for G3 Mac.

defopt DDB.

Console support.

Initial import of macppc port.

Merge thorpej-cfargs2.

branches: 1.52.8;
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: 1.51.2;
Convert to intr_establish_xname().

branches: 1.50.66;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Drop 3rd and 4th clauses. Approved by gwr@ and wrstuden@ (copyright
holders).

Fix attach messages. (extra colons, misplaced newline etc.)

branches: 1.47.2; 1.47.4; 1.47.6;
use device_lookup_private to get softc

branches: 1.46.2; 1.46.4; 1.46.6; 1.46.8;
Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.

branches: 1.45.14;
Use the softint API.

Call zs_lock_init() to set up the chanstate's lock.

branches: 1.43.2;
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: 1.42.2; 1.42.10; 1.42.18; 1.42.20; 1.42.22; 1.42.24;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.41.4;
s/independant/independent/, from Zafer.

Remove a function declaration of zssoft() which was
inside #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS.

Pass zsc_softc to zshard() directly rather than searching it in zshard().

Checking all zsc units in zshard() is efficient only on ports
which share one interrupt among all zsc units, like sparc or sun3.
On such ports, zshard() is established as a handler only once.

XXX1: more other MD zs drivers should be fixed similarly.
XXX2: zsc on macppc has independent interrupts for channel A and B,
but MI z8530sc can't handle such configuration.

macppc always defines __HAVE_GENERIC_SOFT_INTERRUPTS,
so remove #ifdef/#ifndefs against it.

branches: 1.37.2; 1.37.4;
back out previous commit since it breaks console output when not using a
serial console

branches: 1.36.2;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.35.4; 1.35.8;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.33.2;
cleanup const/volatile/shadowing

Initialize zsconschannel to -1 so that it can't matched unless zscninit
is explicitly called to set it up.

branches: 1.31.2;
use a global variable to ensure that only one instance is configured
rather than requiring that its unit number be zero.
simplify by not pretending that powermacs can have more than 1 zsc.

de-__P, remove register, ansify.

Add latent generic soft interrupt support.

netbsd.org -> NetBSD.org

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

__KERNEL_RCSID()

branches: 1.26.2;
Add prototypes for ZS_TXDMA functions.
XXX Maybe we should have DMA hooks in MI z8530tty.

Provide locking required by the interrupt handlers running at IPL_SERIAL.

Use aprint_normal() for cfprint routines.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

branches: 1.20.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

add support for kgdb over zs

branches: 1.18.6;
bcopy -> memcpy, bzero -> memset, bcmp -> memcmp.
Reviewed by Matt Thomas, ok'd by Tsubai Masanari.

branches: 1.17.2;
`existent', not `existant'

Make macppc compile by default with -Wall -Wmissing-prototype in addition
to its currently enabled warnings. For the lack of a better place, most
global function prototype wound up in <machine/autoconf.h> unless there
was a better place for them. ofb_* structs renamed to offb_* to avoid
conflict with ofb_softc in <dev/ofw/openfirm.h>

branches: 1.15.4;
* Access hardware directly in zscn* instead of calling OF.
* Clean up.

branches: 1.14.2;
- Implement cnbell() -- ring the console bell. The cn_bell entrypoint
is optional.
- Add cn_bell to statically allocated consdevs as appropriate.

Don't use hardcoded speed value when this is a console. Instead, read
from zs. (because OF-3.x uses 57600 bps)

branches: 1.12.8;
Oops. macppc doesn't use PCLK as a baud rate source.

Minor cleanup.
Make the initializer for BAUDLO depend on PCLK directly; it was incorrect on
some ports where PCLK is not 4.9152MHz.
XXX Is the default value actually used?

Don't set DCD_IE in the frontends. KGDB doesn't even use DCD, and the tty
frontends get it from zsparam() anyway.

Fix a bug of last change.

Use "interrupt" property if "AAPL,interrupt" is not found.

Turn on support for 115,200 and 230,400 baud. Should work, but might
generate lots of interupts (one per char or so) if we don't have
DMA set up.

Back out previous change.

Enable 115200 and (untested)230400 bps.

Add support for G3 Mac.

defopt DDB.

Console support.

Initial import of macppc port.

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: 1.51.2;
Convert to intr_establish_xname().

branches: 1.50.66;
Modify mapiodev to take a third argument indicating whether the space
should be prefetchable (true) or not (false).

Drop 3rd and 4th clauses. Approved by gwr@ and wrstuden@ (copyright
holders).

Fix attach messages. (extra colons, misplaced newline etc.)

branches: 1.47.2; 1.47.4; 1.47.6;
use device_lookup_private to get softc

branches: 1.46.2; 1.46.4; 1.46.6; 1.46.8;
Split softc and device_t for zsc(4) and its children.

XXX we should restructure MI APIs and make it really machine independent.

branches: 1.45.14;
Use the softint API.

Call zs_lock_init() to set up the chanstate's lock.

branches: 1.43.2;
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: 1.42.2; 1.42.10; 1.42.18; 1.42.20; 1.42.22; 1.42.24;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.41.4;
s/independant/independent/, from Zafer.

Remove a function declaration of zssoft() which was
inside #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS.

Pass zsc_softc to zshard() directly rather than searching it in zshard().

Checking all zsc units in zshard() is efficient only on ports
which share one interrupt among all zsc units, like sparc or sun3.
On such ports, zshard() is established as a handler only once.

XXX1: more other MD zs drivers should be fixed similarly.
XXX2: zsc on macppc has independent interrupts for channel A and B,
but MI z8530sc can't handle such configuration.

macppc always defines __HAVE_GENERIC_SOFT_INTERRUPTS,
so remove #ifdef/#ifndefs against it.

branches: 1.37.2; 1.37.4;
back out previous commit since it breaks console output when not using a
serial console

branches: 1.36.2;
1st cut of Powermac G5 support (uses bridge mode).

branches: 1.35.4; 1.35.8;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.33.2;
cleanup const/volatile/shadowing

Initialize zsconschannel to -1 so that it can't matched unless zscninit
is explicitly called to set it up.

branches: 1.31.2;
use a global variable to ensure that only one instance is configured
rather than requiring that its unit number be zero.
simplify by not pretending that powermacs can have more than 1 zsc.

de-__P, remove register, ansify.

Add latent generic soft interrupt support.

netbsd.org -> NetBSD.org

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

__KERNEL_RCSID()

branches: 1.26.2;
Add prototypes for ZS_TXDMA functions.
XXX Maybe we should have DMA hooks in MI z8530tty.

Provide locking required by the interrupt handlers running at IPL_SERIAL.

Use aprint_normal() for cfprint routines.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Merge the gehenna-devsw branch into the trunk.

This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
by using this grammer.

- Added the new naming convention.
The name of the device switch must be <prefix>_[bc]devsw for auto-generation
of device switch tables.

- The backward compatibility of loading block/character device
switch by LKM framework is broken. This is necessary to convert
from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
the LKM framework will refer it to assign device major number dynamically.

branches: 1.20.4;
Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command". ERESTART is -1, which can lead to
confusion. ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4. No ioctl code should now return -1 anywhere. The
ioctl() system call is now properly restartable.

add support for kgdb over zs

branches: 1.18.6;
bcopy -> memcpy, bzero -> memset, bcmp -> memcmp.
Reviewed by Matt Thomas, ok'd by Tsubai Masanari.

branches: 1.17.2;
`existent', not `existant'

Make macppc compile by default with -Wall -Wmissing-prototype in addition
to its currently enabled warnings. For the lack of a better place, most
global function prototype wound up in <machine/autoconf.h> unless there
was a better place for them. ofb_* structs renamed to offb_* to avoid
conflict with ofb_softc in <dev/ofw/openfirm.h>

branches: 1.15.4;
* Access hardware directly in zscn* instead of calling OF.
* Clean up.

branches: 1.14.2;
- Implement cnbell() -- ring the console bell. The cn_bell entrypoint
is optional.
- Add cn_bell to statically allocated consdevs as appropriate.

Don't use hardcoded speed value when this is a console. Instead, read
from zs. (because OF-3.x uses 57600 bps)

branches: 1.12.8;
Oops. macppc doesn't use PCLK as a baud rate source.

Minor cleanup.
Make the initializer for BAUDLO depend on PCLK directly; it was incorrect on
some ports where PCLK is not 4.9152MHz.
XXX Is the default value actually used?

Don't set DCD_IE in the frontends. KGDB doesn't even use DCD, and the tty
frontends get it from zsparam() anyway.

Fix a bug of last change.

Use "interrupt" property if "AAPL,interrupt" is not found.

Turn on support for 115,200 and 230,400 baud. Should work, but might
generate lots of interupts (one per char or so) if we don't have
DMA set up.

Back out previous change.

Enable 115200 and (untested)230400 bps.

Add support for G3 Mac.

defopt DDB.

Console support.

Initial import of macppc port.