fix various typos in comments.

ts(4): Skip fabricating bogus struct device in tsmatch.

Doesn't appear to be used anywhere in tsmatch. Let's not invent
bogus autoconf guts here.

s/sytem/system/

Revert previous. No performance gain worth the potential headaches
with buffers in these contexts.

Avoid thundering herd: cv_broadcast(&bp->b_busy) -> cv_signal(&bp->b_busy)

Add d_discard to all struct cdevsw instances I could find.

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

Add d_discard to all struct bdevsw instances I could find.

I've set them all to nodiscard. Some of them (wd, dk, vnd, ld,
raidframe, maybe cgd) should be implemented for real.

branches: 1.29.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.28.8; 1.28.18; 1.28.22;
Need to include <sys/device.h> since vax's <sys/cpu.h> doesn't.

branches: 1.27.6;
g/c BUFQ_FOO() macros and use bufq_foo() directly.

replace bitmask_snprintf(9) with snprintb(3)

branches: 1.25.4; 1.25.12;
use aprint_*_dev and device_xname

Rototill the vax code. Switch to devicet/PRIV_ALLOC. Cleanup vax autoconf
code. Move to prototype definitions. staticfy, constify, avoid casting.
Use device_* accessors.

branches: 1.23.2; 1.23.6;
Give bbusy() an interlock argument. If the we need to wait for the buffer,
the interlock is dropped and reacquired when awoken. This allows for
busying buffers attached to a list that is not locked by bufcache_lock.

Merge vmlocking2 to head.

branches: 1.21.2; 1.21.4; 1.21.8;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.20.4; 1.20.6; 1.20.10; 1.20.12;
It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.

branches: 1.19.2; 1.19.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.18.14;
integrate kauth.

Use device_private().

Use device_parent().

branches: 1.15.4; 1.15.6; 1.15.8; 1.15.10; 1.15.12;
merge ktrace-lwp.

- change the way to specify a bufq strategy. (by string rather than by number)
- rather than embedding bufq_state in driver softc,
have a pointer to the former.
- move bufq related functions from kern/subr_disk.c to kern/subr_bufq.c.
- rename method to strategy for consistency.
- move some definitions which don't need to be exposed to the rest of kernel
from sys/bufq.h to sys/bufq_impl.h.
(is it better to move it to kern/ or somewhere?)
- fix some obvious breakage in dev/qbus/ts.c. (not tested)

branches: 1.13.4;
White space nits.

branches: 1.12.4; 1.12.6;
move buffer queue related stuffs from buf.h to their own header, bufq.h.

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

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

branches: 1.10.6;
merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Don't include <sys/map.h>.

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.

Convert to new device buffer queue interface.

Approved by: Anders Magnusson <ragge@netbsd.org>

branches: 1.3.8;
add RCSIDs

branches: 1.2.2; 1.2.4; 1.2.6;
Update the TS11 driver to useable state.
Thanks to Michael Kukat for providing a machine to test this driver.

Moved from sys/arch/vax/uba/.

ts(4): Skip fabricating bogus struct device in tsmatch.

Doesn't appear to be used anywhere in tsmatch. Let's not invent
bogus autoconf guts here.

s/sytem/system/

Revert previous. No performance gain worth the potential headaches
with buffers in these contexts.

Avoid thundering herd: cv_broadcast(&bp->b_busy) -> cv_signal(&bp->b_busy)

Add d_discard to all struct cdevsw instances I could find.

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

Add d_discard to all struct bdevsw instances I could find.

I've set them all to nodiscard. Some of them (wd, dk, vnd, ld,
raidframe, maybe cgd) should be implemented for real.

branches: 1.29.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.28.8; 1.28.18; 1.28.22;
Need to include <sys/device.h> since vax's <sys/cpu.h> doesn't.

branches: 1.27.6;
g/c BUFQ_FOO() macros and use bufq_foo() directly.

replace bitmask_snprintf(9) with snprintb(3)

branches: 1.25.4; 1.25.12;
use aprint_*_dev and device_xname

Rototill the vax code. Switch to devicet/PRIV_ALLOC. Cleanup vax autoconf
code. Move to prototype definitions. staticfy, constify, avoid casting.
Use device_* accessors.

branches: 1.23.2; 1.23.6;
Give bbusy() an interlock argument. If the we need to wait for the buffer,
the interlock is dropped and reacquired when awoken. This allows for
busying buffers attached to a list that is not locked by bufcache_lock.

Merge vmlocking2 to head.

branches: 1.21.2; 1.21.4; 1.21.8;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.20.4; 1.20.6; 1.20.10; 1.20.12;
It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.

branches: 1.19.2; 1.19.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.18.14;
integrate kauth.

Use device_private().

Use device_parent().

branches: 1.15.4; 1.15.6; 1.15.8; 1.15.10; 1.15.12;
merge ktrace-lwp.

- change the way to specify a bufq strategy. (by string rather than by number)
- rather than embedding bufq_state in driver softc,
have a pointer to the former.
- move bufq related functions from kern/subr_disk.c to kern/subr_bufq.c.
- rename method to strategy for consistency.
- move some definitions which don't need to be exposed to the rest of kernel
from sys/bufq.h to sys/bufq_impl.h.
(is it better to move it to kern/ or somewhere?)
- fix some obvious breakage in dev/qbus/ts.c. (not tested)

branches: 1.13.4;
White space nits.

branches: 1.12.4; 1.12.6;
move buffer queue related stuffs from buf.h to their own header, bufq.h.

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

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

branches: 1.10.6;
merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Don't include <sys/map.h>.

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.

Convert to new device buffer queue interface.

Approved by: Anders Magnusson <ragge@netbsd.org>

branches: 1.3.8;
add RCSIDs

branches: 1.2.2; 1.2.4; 1.2.6;
Update the TS11 driver to useable state.
Thanks to Michael Kukat for providing a machine to test this driver.

Moved from sys/arch/vax/uba/.

s/sytem/system/

Revert previous. No performance gain worth the potential headaches
with buffers in these contexts.

Avoid thundering herd: cv_broadcast(&bp->b_busy) -> cv_signal(&bp->b_busy)

Add d_discard to all struct cdevsw instances I could find.

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

Add d_discard to all struct bdevsw instances I could find.

I've set them all to nodiscard. Some of them (wd, dk, vnd, ld,
raidframe, maybe cgd) should be implemented for real.

branches: 1.29.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.28.8; 1.28.18; 1.28.22;
Need to include <sys/device.h> since vax's <sys/cpu.h> doesn't.

branches: 1.27.6;
g/c BUFQ_FOO() macros and use bufq_foo() directly.

replace bitmask_snprintf(9) with snprintb(3)

branches: 1.25.4; 1.25.12;
use aprint_*_dev and device_xname

Rototill the vax code. Switch to devicet/PRIV_ALLOC. Cleanup vax autoconf
code. Move to prototype definitions. staticfy, constify, avoid casting.
Use device_* accessors.

branches: 1.23.2; 1.23.6;
Give bbusy() an interlock argument. If the we need to wait for the buffer,
the interlock is dropped and reacquired when awoken. This allows for
busying buffers attached to a list that is not locked by bufcache_lock.

Merge vmlocking2 to head.

branches: 1.21.2; 1.21.4; 1.21.8;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.20.4; 1.20.6; 1.20.10; 1.20.12;
It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.

branches: 1.19.2; 1.19.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.18.14;
integrate kauth.

Use device_private().

Use device_parent().

branches: 1.15.4; 1.15.6; 1.15.8; 1.15.10; 1.15.12;
merge ktrace-lwp.

- change the way to specify a bufq strategy. (by string rather than by number)
- rather than embedding bufq_state in driver softc,
have a pointer to the former.
- move bufq related functions from kern/subr_disk.c to kern/subr_bufq.c.
- rename method to strategy for consistency.
- move some definitions which don't need to be exposed to the rest of kernel
from sys/bufq.h to sys/bufq_impl.h.
(is it better to move it to kern/ or somewhere?)
- fix some obvious breakage in dev/qbus/ts.c. (not tested)

branches: 1.13.4;
White space nits.

branches: 1.12.4; 1.12.6;
move buffer queue related stuffs from buf.h to their own header, bufq.h.

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

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

branches: 1.10.6;
merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Don't include <sys/map.h>.

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.

Convert to new device buffer queue interface.

Approved by: Anders Magnusson <ragge@netbsd.org>

branches: 1.3.8;
add RCSIDs

branches: 1.2.2; 1.2.4; 1.2.6;
Update the TS11 driver to useable state.
Thanks to Michael Kukat for providing a machine to test this driver.

Moved from sys/arch/vax/uba/.

Revert previous. No performance gain worth the potential headaches
with buffers in these contexts.

Avoid thundering herd: cv_broadcast(&bp->b_busy) -> cv_signal(&bp->b_busy)

Add d_discard to all struct cdevsw instances I could find.

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

Add d_discard to all struct bdevsw instances I could find.

I've set them all to nodiscard. Some of them (wd, dk, vnd, ld,
raidframe, maybe cgd) should be implemented for real.

branches: 1.29.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.28.8; 1.28.18; 1.28.22;
Need to include <sys/device.h> since vax's <sys/cpu.h> doesn't.

branches: 1.27.6;
g/c BUFQ_FOO() macros and use bufq_foo() directly.

replace bitmask_snprintf(9) with snprintb(3)

branches: 1.25.4; 1.25.12;
use aprint_*_dev and device_xname

Rototill the vax code. Switch to devicet/PRIV_ALLOC. Cleanup vax autoconf
code. Move to prototype definitions. staticfy, constify, avoid casting.
Use device_* accessors.

branches: 1.23.2; 1.23.6;
Give bbusy() an interlock argument. If the we need to wait for the buffer,
the interlock is dropped and reacquired when awoken. This allows for
busying buffers attached to a list that is not locked by bufcache_lock.

Merge vmlocking2 to head.

branches: 1.21.2; 1.21.4; 1.21.8;
machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.20.4; 1.20.6; 1.20.10; 1.20.12;
It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.

branches: 1.19.2; 1.19.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.18.14;
integrate kauth.

Use device_private().

Use device_parent().

branches: 1.15.4; 1.15.6; 1.15.8; 1.15.10; 1.15.12;
merge ktrace-lwp.

- change the way to specify a bufq strategy. (by string rather than by number)
- rather than embedding bufq_state in driver softc,
have a pointer to the former.
- move bufq related functions from kern/subr_disk.c to kern/subr_bufq.c.
- rename method to strategy for consistency.
- move some definitions which don't need to be exposed to the rest of kernel
from sys/bufq.h to sys/bufq_impl.h.
(is it better to move it to kern/ or somewhere?)
- fix some obvious breakage in dev/qbus/ts.c. (not tested)

branches: 1.13.4;
White space nits.

branches: 1.12.4; 1.12.6;
move buffer queue related stuffs from buf.h to their own header, bufq.h.

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

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

branches: 1.10.6;
merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

Don't include <sys/map.h>.

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.

Convert to new device buffer queue interface.

Approved by: Anders Magnusson <ragge@netbsd.org>

branches: 1.3.8;
add RCSIDs

branches: 1.2.2; 1.2.4; 1.2.6;
Update the TS11 driver to useable state.
Thanks to Michael Kukat for providing a machine to test this driver.

Moved from sys/arch/vax/uba/.