introduce "cpu_rnd_messybits" for use instead of nanotime in dev/rnd.c.

rnd.c uses nanotime to get access to some bits that change quickly
between events that it can mix into the entropy pool. it doesn't
use nanotime to get a monotonically increasing set or ordered and
accurate timestamps, it just wants something with bits that change.

there's been discussions for years about letting rnd use a clock
that's super fast to read, but not necessarily accurate, but it
wasn't until recently that i figured out it wasn't interested in
time at all, so things like keeping a fast clock coherent between
cpu cores or correct according to ntp is unecessary. this means we
can just let rnd read the cycle counters on cpus and things will
be fine. cpus with cycle counters that vary in their speed and
arent kept consistent between cores may even be desirable in this
context.

so this is the first step in converting rnd.c to reading cycle
counter. it copies the nanotime backend to each arch, and they can
replace it with something MD as a second step later on.

djm@ suggested rnd_messybytes, but we landed on cpu_rnd_messybits.
thanks to visa for his eyes.
ok deraadt@ visa@
deraadt@ says he will help handle any MD fallout that occurs.

fast track ddb> reboot command to skip anything which might panic again.
ok deraadt

In uvm Chuck decided backing store would not be allocated proactively
for blocks re-fetchable from the filesystem. However at reboot time,
filesystems are unmounted, and since processes lack backing store they
are killed. Since the scheduler is still running, in some cases init is
killed... which drops us to ddb [noted by bluhm]. Solution is to convert
filesystems to read-only [proposed by kettenis]. The tale follows:
sys_reboot() should pass proc * to MD boot() to vfs_shutdown() which
completes current IO with vfs_busy VB_WRITE|VB_WAIT, then calls VFS_MOUNT()
with MNT_UPDATE | MNT_RDONLY, soon teaching us that *fs_mount() calls a
copyin() late... so store the sizes in vfsconflist[] and move the copyin()
to sys_mount()... and notice nfs_mount copyin() is size-variant, so kill
legacy struct nfs_args3. Next we learn ffs_mount()'s MNT_UPDATE code is
sharp and rusty especially wrt softdep, so fix some bugs adn add
~MNT_SOFTDEP to the downgrade. Some vnodes need a little more help,
so tie them to &dead_vnops.

ffs_mount calling DIOCCACHESYNC is causing a bit of grief still but
this issue is seperate and will be dealt with in time.
couple hundred reboots by bluhm and myself, advice from guenther and
others at the hut

Rename Debugger() into db_enter().

Using a name with the 'db_' prefix makes it invisible from the dynamic
profiler.

ok deraadt@, kettenis@, visa@

Apply consistency to forever loops with continue and NOTREACHED

Same thought from kettenis@, ok krw@ phessler@ millert@

Sync no-argument function declaration and definition by adding (void).
Covers all of landisk/sh, per naddy's suggestion.

ok on previous diff deraadt@ naddy@

retire shutdown hooks; ok deraadt, krw

Use config_suspend_all(9).

ok mpi@, uebayasi@, dlg@

boot(9): Reduce annoying style diffs

- Always use either: ((x & RB_XXX) != 0) or ((x & RB_XXX) == 0) in boolean
context (mostly if (x), or x ? y : z)
- prom_halt() in alpha is confirmed to take int as boolean

Converted by coccinelle. No functional change intended.

More comment cleanup in boot().

boot(9): Cosmetic changes to improve diff'ability.

Cosmetic changes to reduce diffs.

Set cold to 1 before executing the DVACT_POWERDOWN handlers when halting or
rebooting a machine, like it is done in the hibernate case.

At least some USB host controller drivers rely on this to busy way instead
of sleeping. Avoid a panic on macppc with an uhci(4) cardbus plugged in.

ok deraadt@, uebayashi@

boot(): Remove comments about RB_TIMEBAD to reduce diffs

RB_TIMEBAD is documented well enough that the comment is not needed. sparc64
does slightly different and its comment is left with XXX.

OK deraadt@ miod@

boot(): Unify declarations

OK deraadt@

Revert previous diff setting cold to 1 on shutdown because it breaks machine
with softraid(4) disks.

softraid(4) is the last real consumer of the doshutdownhooks(9) API and it is
not trivial to convert its hook to a DVACT_POWERDOWN handler since the latter
does not allow to sleep.

Set cold to 1 before executing the DVACT_POWERDOWN handlers when halting or
rebooting a machine, like it is done in the hibernate case.

At least some USB host controller drivers rely on this to busy way instead
of sleeping. Avoid a panic on macppc with an uhci(4) cardbus plugged in.

ok deraadt@, uebayashi@

Fewer <uvm/uvm.h>

get rid of the assumption that the head of the alldevs list is the
"mainbus" device. this breaks when mpath is enabled because it
attaches before mainbus and therefore takes the head position.

have autoconf provide device_mainbus() which looks up mainbus_cd,
and use that instead.

discussed with deraadt who just wants mpath stuff to move forward
despite there being many ways to shine this particular turd.

In boot(), do not iterate over alldevs if it's empty (i.e. halting from ddb
with ddb entered early with boot -d or from UKC).

final removal of daddr64_t. daddr_t has been 64 bit for a long enough
test period; i think 3 years ago the last bugs fell out.
ok otto beck others

Revamp the sequences for suspend/hibernate -> resume so that the code
paths are reflexive. It is now possible to fail part-way through a
suspend sequence, and recover along the resume code path.
Split DVACT_SUSPEND by adding a new DVACT_POWERDOWN method is used
after hibernate (and suspend too) to finish the job. Some drivers
must be converted at the same time to use this instead of shutdown hooks
(the others will follow at a later time)
ok kettenis mlarkin

if_downall() cannot be done MI in sys_reboot() because vfs_shutdown()
might need network (ie. nfs). Move the call to the MD boot() routines.
This cause for boot hangs diagnosed by kettenis.

machdep.kbdreset enables a shutdown by Ctrl-Alt-Del on amd64 and
i386. Stop abusing it on other archs for controling a shutdown by
pressing the soft power button:

* Add a MI sysctl hw.allowpowerdown; if set to 1 (the default) it
allows a power button shutdown.
* Make acpi(4)/acpibtn(4) honor hw.allowpowerdown.
* Switch the various power button intercepts on landisk, sgi, sparc64
and zaurus over to hw.allowpowerdown.
* Garbage collect the machdep.kbdreset sysctl on all archs other than
amd64 and i386.

ok miod@

Remove the freelist member from vm_physseg

The new world order of pmemrange makes this data completely redundant
(being dealt with by the pmemrange constraints instead). Remove all code
that messes with the freelist.

While touching every caller of uvm_page_physload() anyway, add the flags
argument to all callers (all but one is 0 and that one already used
PHYSLOAD_DEVICE) and remove the macro magic to allow callers to continue
without it.

Should shrink the code a bit, as well.

matthew@ pointed out some mistakes i'd made.
``freelist death, I like. Ok.' ariane@
`I agree with the general direction, go ahead and i'll fix any fallout
shortly'' miod@ (68k 88k and vax i could not check would build)

Bunch of include adjustements to restore compilability.

uvm constraints. Add two mandatory MD symbols, uvm_md_constraints
which contains the constraints for DMA/memory allocation for each
architecture, and dma_constraints which contains the range of addresses
that are dma accessable by the system.

This is based on ariane@'s physcontig diff, with lots of bugfixes and
additions the following additions by my self:

Introduce a new function pool_set_constraints() which sets the address
range for which we allocate pages for the pool from, this is now used
for the mbuf/mbuf cluster pools to keep them dma accessible.

The !direct archs no longer stuff pages into the kernel object in
uvm_km_getpage_pla but rather do a pmap_extract() in uvm_km_putpages.

Tested heavily by my self on i386, amd64 and sparc64. Some tests on
alpha and SGI.

"commit it" beck, art, oga, deraadt
"i like the diff" deraadt

Don't #include <sys/user.h> into files that don't need the stuff
it defines. In some cases, this means pulling in uvm.h or pcb.h
instead, but most of the inclusions were just noise. Tested on
alpha, amd64, armish, hppa, i386, macpcc, sgi, sparc64, and vax,
mostly by krw and naddy.
ok krw@

Declare safepri at the MD level on each platform, so that the kern_synch.c
does not have to deal with it as a common. Some platforms may be missed
by this commit... if you spot one, fix it the same way.
ok miod

more cleanup to cope with the change that tries to make proc.h not act
like it is everything.h
ok tedu

- correctly set cpu_model: instead of a vendor + model, set the cpu type

ok miod@

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@

Make sure to cnpollc(1)/cnpollc(0) around cngetc() or getsn() calls.

Add new stub uvm_shutdown() and call it from the right place in MD boot()

setroot() is supposed to be safe in all cases, so kill the special cases
for RB_DFLTROOT; ok miod

now that all partition size/offsets are potentially 64-bit, change the
type of all variables to daddr64_t. this includes the APIs for XXsize()
and XXdump(), all range checks inside bio drivers, internal variables
for disklabel handling, and even uvm's swap offsets. re-read numerous
times by otto, miod, krw, thib to look for errors

Blink 8x slower, so that this fits better with Kraftwerk's ``Elektro
Kardiogramm'' in the background.

machdep.led_blink sysctl for landisk, also move cpu_sysctl() code and related
variables from arch/sh/ to arch/landisk/. ok deraadt@

Move UKC later in the boot process, so that it can use malloc().

Kernel crash dumps and associated libkvm bits for landisk.

Get memory size from SH-IPL+g whenever possible, before relying upon the
hardcoded 64MB. No functional change since we have not encountered non-64MB
systems yet.

no newline at end of cpu_model

No bootinfo stuff. We'll use something different to pass device information
from the boot blocks to the kernel.

Add ramdisk hooks portion.

support boot -c

Do not zero bss in the kernel, the bootloader does this for us and it causes
a problem loading the kernel.

w/ help of netbsd srcs and some mother unzel made it lift off

branches: 1.1.1;
Initial revision

fast track ddb> reboot command to skip anything which might panic again.
ok deraadt

In uvm Chuck decided backing store would not be allocated proactively
for blocks re-fetchable from the filesystem. However at reboot time,
filesystems are unmounted, and since processes lack backing store they
are killed. Since the scheduler is still running, in some cases init is
killed... which drops us to ddb [noted by bluhm]. Solution is to convert
filesystems to read-only [proposed by kettenis]. The tale follows:
sys_reboot() should pass proc * to MD boot() to vfs_shutdown() which
completes current IO with vfs_busy VB_WRITE|VB_WAIT, then calls VFS_MOUNT()
with MNT_UPDATE | MNT_RDONLY, soon teaching us that *fs_mount() calls a
copyin() late... so store the sizes in vfsconflist[] and move the copyin()
to sys_mount()... and notice nfs_mount copyin() is size-variant, so kill
legacy struct nfs_args3. Next we learn ffs_mount()'s MNT_UPDATE code is
sharp and rusty especially wrt softdep, so fix some bugs adn add
~MNT_SOFTDEP to the downgrade. Some vnodes need a little more help,
so tie them to &dead_vnops.

ffs_mount calling DIOCCACHESYNC is causing a bit of grief still but
this issue is seperate and will be dealt with in time.
couple hundred reboots by bluhm and myself, advice from guenther and
others at the hut

Rename Debugger() into db_enter().

Using a name with the 'db_' prefix makes it invisible from the dynamic
profiler.

ok deraadt@, kettenis@, visa@

Apply consistency to forever loops with continue and NOTREACHED

Same thought from kettenis@, ok krw@ phessler@ millert@

Sync no-argument function declaration and definition by adding (void).
Covers all of landisk/sh, per naddy's suggestion.

ok on previous diff deraadt@ naddy@

retire shutdown hooks; ok deraadt, krw

Use config_suspend_all(9).

ok mpi@, uebayasi@, dlg@

boot(9): Reduce annoying style diffs

- Always use either: ((x & RB_XXX) != 0) or ((x & RB_XXX) == 0) in boolean
context (mostly if (x), or x ? y : z)
- prom_halt() in alpha is confirmed to take int as boolean

Converted by coccinelle. No functional change intended.

More comment cleanup in boot().

boot(9): Cosmetic changes to improve diff'ability.

Cosmetic changes to reduce diffs.

Set cold to 1 before executing the DVACT_POWERDOWN handlers when halting or
rebooting a machine, like it is done in the hibernate case.

At least some USB host controller drivers rely on this to busy way instead
of sleeping. Avoid a panic on macppc with an uhci(4) cardbus plugged in.

ok deraadt@, uebayashi@

boot(): Remove comments about RB_TIMEBAD to reduce diffs

RB_TIMEBAD is documented well enough that the comment is not needed. sparc64
does slightly different and its comment is left with XXX.

OK deraadt@ miod@

boot(): Unify declarations

OK deraadt@

Revert previous diff setting cold to 1 on shutdown because it breaks machine
with softraid(4) disks.

softraid(4) is the last real consumer of the doshutdownhooks(9) API and it is
not trivial to convert its hook to a DVACT_POWERDOWN handler since the latter
does not allow to sleep.

Set cold to 1 before executing the DVACT_POWERDOWN handlers when halting or
rebooting a machine, like it is done in the hibernate case.

At least some USB host controller drivers rely on this to busy way instead
of sleeping. Avoid a panic on macppc with an uhci(4) cardbus plugged in.

ok deraadt@, uebayashi@

Fewer <uvm/uvm.h>

get rid of the assumption that the head of the alldevs list is the
"mainbus" device. this breaks when mpath is enabled because it
attaches before mainbus and therefore takes the head position.

have autoconf provide device_mainbus() which looks up mainbus_cd,
and use that instead.

discussed with deraadt who just wants mpath stuff to move forward
despite there being many ways to shine this particular turd.

In boot(), do not iterate over alldevs if it's empty (i.e. halting from ddb
with ddb entered early with boot -d or from UKC).

final removal of daddr64_t. daddr_t has been 64 bit for a long enough
test period; i think 3 years ago the last bugs fell out.
ok otto beck others

Revamp the sequences for suspend/hibernate -> resume so that the code
paths are reflexive. It is now possible to fail part-way through a
suspend sequence, and recover along the resume code path.
Split DVACT_SUSPEND by adding a new DVACT_POWERDOWN method is used
after hibernate (and suspend too) to finish the job. Some drivers
must be converted at the same time to use this instead of shutdown hooks
(the others will follow at a later time)
ok kettenis mlarkin

if_downall() cannot be done MI in sys_reboot() because vfs_shutdown()
might need network (ie. nfs). Move the call to the MD boot() routines.
This cause for boot hangs diagnosed by kettenis.

machdep.kbdreset enables a shutdown by Ctrl-Alt-Del on amd64 and
i386. Stop abusing it on other archs for controling a shutdown by
pressing the soft power button:

* Add a MI sysctl hw.allowpowerdown; if set to 1 (the default) it
allows a power button shutdown.
* Make acpi(4)/acpibtn(4) honor hw.allowpowerdown.
* Switch the various power button intercepts on landisk, sgi, sparc64
and zaurus over to hw.allowpowerdown.
* Garbage collect the machdep.kbdreset sysctl on all archs other than
amd64 and i386.

ok miod@

Remove the freelist member from vm_physseg

The new world order of pmemrange makes this data completely redundant
(being dealt with by the pmemrange constraints instead). Remove all code
that messes with the freelist.

While touching every caller of uvm_page_physload() anyway, add the flags
argument to all callers (all but one is 0 and that one already used
PHYSLOAD_DEVICE) and remove the macro magic to allow callers to continue
without it.

Should shrink the code a bit, as well.

matthew@ pointed out some mistakes i'd made.
``freelist death, I like. Ok.' ariane@
`I agree with the general direction, go ahead and i'll fix any fallout
shortly'' miod@ (68k 88k and vax i could not check would build)

Bunch of include adjustements to restore compilability.

uvm constraints. Add two mandatory MD symbols, uvm_md_constraints
which contains the constraints for DMA/memory allocation for each
architecture, and dma_constraints which contains the range of addresses
that are dma accessable by the system.

This is based on ariane@'s physcontig diff, with lots of bugfixes and
additions the following additions by my self:

Introduce a new function pool_set_constraints() which sets the address
range for which we allocate pages for the pool from, this is now used
for the mbuf/mbuf cluster pools to keep them dma accessible.

The !direct archs no longer stuff pages into the kernel object in
uvm_km_getpage_pla but rather do a pmap_extract() in uvm_km_putpages.

Tested heavily by my self on i386, amd64 and sparc64. Some tests on
alpha and SGI.

"commit it" beck, art, oga, deraadt
"i like the diff" deraadt

Don't #include <sys/user.h> into files that don't need the stuff
it defines. In some cases, this means pulling in uvm.h or pcb.h
instead, but most of the inclusions were just noise. Tested on
alpha, amd64, armish, hppa, i386, macpcc, sgi, sparc64, and vax,
mostly by krw and naddy.
ok krw@

Declare safepri at the MD level on each platform, so that the kern_synch.c
does not have to deal with it as a common. Some platforms may be missed
by this commit... if you spot one, fix it the same way.
ok miod

more cleanup to cope with the change that tries to make proc.h not act
like it is everything.h
ok tedu

- correctly set cpu_model: instead of a vendor + model, set the cpu type

ok miod@

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@

Make sure to cnpollc(1)/cnpollc(0) around cngetc() or getsn() calls.

Add new stub uvm_shutdown() and call it from the right place in MD boot()

setroot() is supposed to be safe in all cases, so kill the special cases
for RB_DFLTROOT; ok miod

now that all partition size/offsets are potentially 64-bit, change the
type of all variables to daddr64_t. this includes the APIs for XXsize()
and XXdump(), all range checks inside bio drivers, internal variables
for disklabel handling, and even uvm's swap offsets. re-read numerous
times by otto, miod, krw, thib to look for errors

Blink 8x slower, so that this fits better with Kraftwerk's ``Elektro
Kardiogramm'' in the background.

machdep.led_blink sysctl for landisk, also move cpu_sysctl() code and related
variables from arch/sh/ to arch/landisk/. ok deraadt@

Move UKC later in the boot process, so that it can use malloc().

Kernel crash dumps and associated libkvm bits for landisk.

Get memory size from SH-IPL+g whenever possible, before relying upon the
hardcoded 64MB. No functional change since we have not encountered non-64MB
systems yet.

no newline at end of cpu_model

No bootinfo stuff. We'll use something different to pass device information
from the boot blocks to the kernel.

Add ramdisk hooks portion.

support boot -c

Do not zero bss in the kernel, the bootloader does this for us and it causes
a problem loading the kernel.

w/ help of netbsd srcs and some mother unzel made it lift off

branches: 1.1.1;
Initial revision

In uvm Chuck decided backing store would not be allocated proactively
for blocks re-fetchable from the filesystem. However at reboot time,
filesystems are unmounted, and since processes lack backing store they
are killed. Since the scheduler is still running, in some cases init is
killed... which drops us to ddb [noted by bluhm]. Solution is to convert
filesystems to read-only [proposed by kettenis]. The tale follows:
sys_reboot() should pass proc * to MD boot() to vfs_shutdown() which
completes current IO with vfs_busy VB_WRITE|VB_WAIT, then calls VFS_MOUNT()
with MNT_UPDATE | MNT_RDONLY, soon teaching us that *fs_mount() calls a
copyin() late... so store the sizes in vfsconflist[] and move the copyin()
to sys_mount()... and notice nfs_mount copyin() is size-variant, so kill
legacy struct nfs_args3. Next we learn ffs_mount()'s MNT_UPDATE code is
sharp and rusty especially wrt softdep, so fix some bugs adn add
~MNT_SOFTDEP to the downgrade. Some vnodes need a little more help,
so tie them to &dead_vnops.

ffs_mount calling DIOCCACHESYNC is causing a bit of grief still but
this issue is seperate and will be dealt with in time.
couple hundred reboots by bluhm and myself, advice from guenther and
others at the hut

Rename Debugger() into db_enter().

Using a name with the 'db_' prefix makes it invisible from the dynamic
profiler.

ok deraadt@, kettenis@, visa@

Apply consistency to forever loops with continue and NOTREACHED

Same thought from kettenis@, ok krw@ phessler@ millert@

Sync no-argument function declaration and definition by adding (void).
Covers all of landisk/sh, per naddy's suggestion.

ok on previous diff deraadt@ naddy@

retire shutdown hooks; ok deraadt, krw

Use config_suspend_all(9).

ok mpi@, uebayasi@, dlg@

boot(9): Reduce annoying style diffs

- Always use either: ((x & RB_XXX) != 0) or ((x & RB_XXX) == 0) in boolean
context (mostly if (x), or x ? y : z)
- prom_halt() in alpha is confirmed to take int as boolean

Converted by coccinelle. No functional change intended.

More comment cleanup in boot().

boot(9): Cosmetic changes to improve diff'ability.

Cosmetic changes to reduce diffs.

Set cold to 1 before executing the DVACT_POWERDOWN handlers when halting or
rebooting a machine, like it is done in the hibernate case.

At least some USB host controller drivers rely on this to busy way instead
of sleeping. Avoid a panic on macppc with an uhci(4) cardbus plugged in.

ok deraadt@, uebayashi@

boot(): Remove comments about RB_TIMEBAD to reduce diffs

RB_TIMEBAD is documented well enough that the comment is not needed. sparc64
does slightly different and its comment is left with XXX.

OK deraadt@ miod@

boot(): Unify declarations

OK deraadt@

Revert previous diff setting cold to 1 on shutdown because it breaks machine
with softraid(4) disks.

softraid(4) is the last real consumer of the doshutdownhooks(9) API and it is
not trivial to convert its hook to a DVACT_POWERDOWN handler since the latter
does not allow to sleep.

Set cold to 1 before executing the DVACT_POWERDOWN handlers when halting or
rebooting a machine, like it is done in the hibernate case.

At least some USB host controller drivers rely on this to busy way instead
of sleeping. Avoid a panic on macppc with an uhci(4) cardbus plugged in.

ok deraadt@, uebayashi@

Fewer <uvm/uvm.h>

get rid of the assumption that the head of the alldevs list is the
"mainbus" device. this breaks when mpath is enabled because it
attaches before mainbus and therefore takes the head position.

have autoconf provide device_mainbus() which looks up mainbus_cd,
and use that instead.

discussed with deraadt who just wants mpath stuff to move forward
despite there being many ways to shine this particular turd.

In boot(), do not iterate over alldevs if it's empty (i.e. halting from ddb
with ddb entered early with boot -d or from UKC).

final removal of daddr64_t. daddr_t has been 64 bit for a long enough
test period; i think 3 years ago the last bugs fell out.
ok otto beck others

Revamp the sequences for suspend/hibernate -> resume so that the code
paths are reflexive. It is now possible to fail part-way through a
suspend sequence, and recover along the resume code path.
Split DVACT_SUSPEND by adding a new DVACT_POWERDOWN method is used
after hibernate (and suspend too) to finish the job. Some drivers
must be converted at the same time to use this instead of shutdown hooks
(the others will follow at a later time)
ok kettenis mlarkin

if_downall() cannot be done MI in sys_reboot() because vfs_shutdown()
might need network (ie. nfs). Move the call to the MD boot() routines.
This cause for boot hangs diagnosed by kettenis.

machdep.kbdreset enables a shutdown by Ctrl-Alt-Del on amd64 and
i386. Stop abusing it on other archs for controling a shutdown by
pressing the soft power button:

* Add a MI sysctl hw.allowpowerdown; if set to 1 (the default) it
allows a power button shutdown.
* Make acpi(4)/acpibtn(4) honor hw.allowpowerdown.
* Switch the various power button intercepts on landisk, sgi, sparc64
and zaurus over to hw.allowpowerdown.
* Garbage collect the machdep.kbdreset sysctl on all archs other than
amd64 and i386.

ok miod@

Remove the freelist member from vm_physseg

The new world order of pmemrange makes this data completely redundant
(being dealt with by the pmemrange constraints instead). Remove all code
that messes with the freelist.

While touching every caller of uvm_page_physload() anyway, add the flags
argument to all callers (all but one is 0 and that one already used
PHYSLOAD_DEVICE) and remove the macro magic to allow callers to continue
without it.

Should shrink the code a bit, as well.

matthew@ pointed out some mistakes i'd made.
``freelist death, I like. Ok.' ariane@
`I agree with the general direction, go ahead and i'll fix any fallout
shortly'' miod@ (68k 88k and vax i could not check would build)

Bunch of include adjustements to restore compilability.

uvm constraints. Add two mandatory MD symbols, uvm_md_constraints
which contains the constraints for DMA/memory allocation for each
architecture, and dma_constraints which contains the range of addresses
that are dma accessable by the system.

This is based on ariane@'s physcontig diff, with lots of bugfixes and
additions the following additions by my self:

Introduce a new function pool_set_constraints() which sets the address
range for which we allocate pages for the pool from, this is now used
for the mbuf/mbuf cluster pools to keep them dma accessible.

The !direct archs no longer stuff pages into the kernel object in
uvm_km_getpage_pla but rather do a pmap_extract() in uvm_km_putpages.

Tested heavily by my self on i386, amd64 and sparc64. Some tests on
alpha and SGI.

"commit it" beck, art, oga, deraadt
"i like the diff" deraadt

Don't #include <sys/user.h> into files that don't need the stuff
it defines. In some cases, this means pulling in uvm.h or pcb.h
instead, but most of the inclusions were just noise. Tested on
alpha, amd64, armish, hppa, i386, macpcc, sgi, sparc64, and vax,
mostly by krw and naddy.
ok krw@

Declare safepri at the MD level on each platform, so that the kern_synch.c
does not have to deal with it as a common. Some platforms may be missed
by this commit... if you spot one, fix it the same way.
ok miod

more cleanup to cope with the change that tries to make proc.h not act
like it is everything.h
ok tedu

- correctly set cpu_model: instead of a vendor + model, set the cpu type

ok miod@

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@

Make sure to cnpollc(1)/cnpollc(0) around cngetc() or getsn() calls.

Add new stub uvm_shutdown() and call it from the right place in MD boot()

setroot() is supposed to be safe in all cases, so kill the special cases
for RB_DFLTROOT; ok miod

now that all partition size/offsets are potentially 64-bit, change the
type of all variables to daddr64_t. this includes the APIs for XXsize()
and XXdump(), all range checks inside bio drivers, internal variables
for disklabel handling, and even uvm's swap offsets. re-read numerous
times by otto, miod, krw, thib to look for errors

Blink 8x slower, so that this fits better with Kraftwerk's ``Elektro
Kardiogramm'' in the background.

machdep.led_blink sysctl for landisk, also move cpu_sysctl() code and related
variables from arch/sh/ to arch/landisk/. ok deraadt@

Move UKC later in the boot process, so that it can use malloc().

Kernel crash dumps and associated libkvm bits for landisk.

Get memory size from SH-IPL+g whenever possible, before relying upon the
hardcoded 64MB. No functional change since we have not encountered non-64MB
systems yet.

no newline at end of cpu_model

No bootinfo stuff. We'll use something different to pass device information
from the boot blocks to the kernel.

Add ramdisk hooks portion.

support boot -c

Do not zero bss in the kernel, the bootloader does this for us and it causes
a problem loading the kernel.

w/ help of netbsd srcs and some mother unzel made it lift off

branches: 1.1.1;
Initial revision