merge ktrace-lwp.

branches: 1.4.4;
add lcd and spi

support EXTINT[4:23] as interrupt sources. They are cascaded to
IRQ4 (EXTINT[4:7]) and 5 (EXTINT[8:23]). ssextio driver handles these interrupts.

support S3C2410's built-in USB host controller, which is OHCI
compliant.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

branches: 1.2.4; 1.2.6;

- add MBR editing menu to sysinst.
- fix typos in timecounter names.
- make sure to drain Tx FIFO to avoid clobbering
kernel boot messages.
- allow to have the 3rd UART.
- add missing time-of-day clock support.

Ok by releng.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Interrupt handling changes, in discussion since February:

- Reduce available SPL levels for hardware devices to none, vm, sched, high.
- Acquire kernel_lock only for interrupts at IPL_VM.
- Implement threaded soft interrupts.

branches: 1.7.30; 1.7.46; 1.7.48; 1.7.50; 1.7.52; 1.7.58;
merge ktrace-lwp.

branches: 1.6.16;
add s3c2xx0_busdma.c which is used to initialize bus dma tag.

Samsung's S3C2800 and S3C24[10]0 CPUs have same built-in UART block,
but there are very small diffs in register definitions. For that, add
new options SSCOM_S3C{2800,2410,2400} and include appropriate
s3c*reg.h.

SSCOM_S3C2410 is also needed for interrupt controller differences.

add SSCOM_S3C2410 option.

branches: 1.3.2;
add an option to set external X'tal frequency.

Clean up evbarm interrupt support a little:
* Define an ARM_INTR_IMPL option, which specifies a header file
describing the interrupt implementation for the platform. Use
this instead of the list of EVBARM_BOARDTYPE checks.
* Make the s3c2xx0 interrupt dispatch code a bit more generic, and move
it to a generic location so that other platforms can use it.

This eliminates all uses of the EVBARM_BOARDTYPE stuff, so delete it.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Merge thorpej-cfargs2.

branches: 1.11.8;
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: 1.10.16;
Stop potential misuse of vendor names and USB vendor IDs in root hub
device and string descriptors.

Firstly: Few vendors have identical PCI-SIG vendor IDs and USB-IF vendor
IDs. As such, using the PCI vendor ID as a USB vendor ID may trample
on whomever is allocated that USB vendor ID.

Secondly: The vendor of the host controller hardware implementation has
little to nothing to do with our usbroothub implementation. Thus we
should not potentially associate any problems therewith to such third
party.

This change will result in root hubs being identified by USB Vendor ID
0x0000. Root hub vendor string will now be "NetBSD" (or, specifically:
ostype). Product ID (0x0000) and product strings remain unchanged.

branches: 1.9.16;
Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix

branches: 1.8.12; 1.8.28; 1.8.30; 1.8.34;
#include <sys/bus.h> instead of <machine/bus.h>.

Fix usb_port.h-removal fallout with the patch by Brett Slager in
port-arm/44081, "evbarm/SMDK2410 kernel fails to compile".

Use device_t instead of device_ptr_t. Use device_t and cfdata_t
typedefs. Insert missing aprint_naive().

branches: 1.6.22;
Remove clause 3 and 4 from TNF licenses

branches: 1.5.2;
try to update for OHCI device/softc split, untested
(I've asked for testing on Apr 3, w/o success.)

branches: 1.4.2;
fix device_t split fallout.

branches: 1.3.76;
merge ktrace-lwp.

branches: 1.2.4;
+ set vendor name as Samsung.
+ delete debug printf() and use aprint_normal()

support S3C2410's built-in USB host controller, which is OHCI
compliant.

merge ktrace-lwp.

branches: 1.3.4;
be consistent with #define<TAB>

move some definitions of register block size from s3c24[10]0reg.h
to s3c24x0reg.h when they are same for S3C2410 and 2400, and rename them as
S3C24X0_FOO_SIZE.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

Merge thorpej-cfargs2.

branches: 1.14.8;
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: 1.13.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.12.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.11.2; 1.11.6;
#include <sys/bus.h> instead of <machine/bus.h>.

merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.8.2;
adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes

Switch SMDK2410 and SMDK2800 kernels to use pmap_devmap_bootstrap() to map
I/O registers that are used in early start-up stage. This replaces the
special bootstrap-time-only bus_space_map function in smdk{2410,2800}_machdep.c.

This makes SMDK{2410,2800}'s initarm() a bit simpler, and gives us smaller diffs
to other evbarm platforms.

An another good thing for SMDK2800 is that now we have all built-in peripheral
registers mapped in 2 segments. We may expect less TLB miss on I/O access
(very slightly).

change a printf to aprint_normal.

branches: 1.5.2; 1.5.6; 1.5.8;
Implement software reset by means of watchdog timer.

move some definitions of register block size from s3c24[10]0reg.h
to s3c24x0reg.h when they are same for S3C2410 and 2400, and rename them as
S3C24X0_FOO_SIZE.

add busdma tag to s3c2xx0_softc and attach arg.

initialize busdma tag in s3c2410_attach()

+ cleanup attach message.
+ use aprint_normal()

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

Remove unnecessary sys/malloc.h include

Merge thorpej-cfargs2.

branches: 1.14.8;
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: 1.13.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.12.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.11.2; 1.11.6;
#include <sys/bus.h> instead of <machine/bus.h>.

One semicolon is enough.

branches: 1.9.10;
Cleanup softint lossage.

__FUNCTION__ -> __func__

branches: 1.7.40; 1.7.44; 1.7.46; 1.7.52; 1.7.56; 1.7.60;
Use device_parent().

branches: 1.6.2; 1.6.4; 1.6.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.3.2;
adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes

branches: 1.2.4;
Fix GCC 3 barfage.

support EXTINT[4:23] as interrupt sources. They are cascaded to
IRQ4 (EXTINT[4:7]) and 5 (EXTINT[8:23]). ssextio driver handles these interrupts.

Remove unnecessary sys/malloc.h include

#include <sys/bus.h> instead of <machine/bus.h>.

Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

branches: 1.11.8;
add closing paren. (HI MATT!)

Don't use atomic_{set,clear}_bit nor any atomic op. These used to wrap
atomic_{clear,set}_bit around munging a device register and that is clearly
wrong. Instead directly manipulate the CPSR to disable interrupts.

branches: 1.9.6; 1.9.8;
Merge kernel changes in matt-armv6 to HEAD.

branches: 1.8.6; 1.8.8; 1.8.10;
Truly kill current_intr_depth once and for all.

Cleanup softint lossage.

branches: 1.6.36; 1.6.46; 1.6.50; 1.6.52; 1.6.58; 1.6.66;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.4.2;
Add use of an __UNVOLATILE() to appease -Wcast-qual.
May be revisited if atomic_set_bit()'s signature can change.

branches: 1.3.4;
support EXTINT[4:23] as interrupt sources. They are cascaded to
IRQ4 (EXTINT[4:7]) and 5 (EXTINT[8:23]). ssextio driver handles these interrupts.

various bug fixes. Now SMDK2410 evboard boots up to single user mode
using install ramdisk.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

merge ktrace-lwp.

branches: 1.1.4;
the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

s/dirver/driver/ in comments.

branches: 1.9.12;
Merge thorpej-cfargs2.

branches: 1.8.8;
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: 1.7.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.6.2; 1.6.12;
#include <sys/bus.h> instead of <machine/bus.h>.

Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)

branches: 1.4.80; 1.4.88; 1.4.94;
merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.2.2;
adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes

branches: 1.1.4;
SPI support for Samsung S3C2410.

spi driver doesn't provide any actual I/O, and attaches child drivers
for devices that hooked to SPI ports.

merge ktrace-lwp.

branches: 1.6.4;
add register definitions for LCD controller, AD converter, and SPI.

be consistent with #define<TAB>

Add some register definitions.

move some definitions of register block size from s3c24[10]0reg.h
to s3c24x0reg.h when they are same for S3C2410 and 2400, and rename them as
S3C24X0_FOO_SIZE.

fix comments.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

merge ktrace-lwp.

branches: 1.2.4;
support EXTINT[4:23] as interrupt sources. They are cascaded to
IRQ4 (EXTINT[4:7]) and 5 (EXTINT[8:23]). ssextio driver handles these interrupts.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

Merge thorpej-cfargs2.

branches: 1.3.8;
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: 1.2.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.1.4; 1.1.6; 1.1.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

malloc(9) -> kmem(9)

branches: 1.4.8;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.2.36; 1.2.38;
C99 types

branches: 1.1.4; 1.1.6; 1.1.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

branches: 1.1.4; 1.1.6; 1.1.52;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

Remove unnecessary sys/malloc.h include

Merge thorpej-cfargs2.

branches: 1.4.8;
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: 1.3.4;
Remove extra semicolon.

split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.1.4; 1.1.6; 1.1.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

few more typos in the word "register", mainly s/resister/register/.
In one comment I assume that it was meant to be pull-up resistor.

Remove unnecessary sys/malloc.h include

Merge thorpej-cfargs2.

branches: 1.5.8;
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: 1.4.10;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

branches: 1.3.38;
Fix compile error.

split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.1.4; 1.1.6; 1.1.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.1.4; 1.1.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

Remove unnecessary sys/malloc.h include

branches: 1.1.4; 1.1.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.1.4; 1.1.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

Change todr_chip_handle::cookie -> todr_chip_handle::todr_dev, and
make it a device_t. Upcoming functional changes will require the
device_t associated with a TODR device.

Change todr_chip_handle::bus_cookie -> todr_chip_handle::todr_devaux.
Nothing was using the old field, but I decided to keep it around just
in cause something needs it in the future.

And with these largely mechanical yet semantically meaningful changes,
thus spake the Oracle: "Welcome to NetBSD 11.99.2."

Remove unnecessary NULL-initialization of TODR handle fields.

Use todr_gettime_ymdhms / todr_settime_ymdhms.

branches: 1.2.20;
use the inline bcdtobin and bintobcd directly instead through a macro.

branches: 1.1.4; 1.1.6; 1.1.10;

- add MBR editing menu to sysinst.
- fix typos in timecounter names.
- make sure to drain Tx FIFO to avoid clobbering
kernel boot messages.
- allow to have the 3rd UART.
- add missing time-of-day clock support.

Ok by releng.

Remove unnecessary sys/malloc.h include

Merge thorpej-cfargs2.

branches: 1.6.8;
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: 1.5.10;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

branches: 1.4.18;
Add NetBSD RCSID, use c99 initializers.

branches: 1.3.2;
Appease gcc 4.8 - from Greg Willatt in private email.

branches: 1.2.12;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.1.4; 1.1.6; 1.1.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

s/dirver/driver/ in comments.

branches: 1.4.12;
Merge thorpej-cfargs2.

branches: 1.3.8;
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: 1.2.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.1.4; 1.1.6; 1.1.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

Merge thorpej-cfargs2.

branches: 1.3.8;
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: 1.2.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.1.4; 1.1.6; 1.1.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.2.4; 1.2.6;

- add MBR editing menu to sysinst.
- fix typos in timecounter names.
- make sure to drain Tx FIFO to avoid clobbering
kernel boot messages.
- allow to have the 3rd UART.
- add missing time-of-day clock support.

Ok by releng.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.1.4; 1.1.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

For struct timecounter, use C99 initializers.
Compile tested. No functional changes intended.

- use a correct bit mask to pick SRCPND register indication.
- reading timer#4 possibly returns value '0'. Having the
'0' and a timer reload interrupt results in a too large
number, meaning the next get_timecounter() call will
return a smaller one than the previous, effectively kill
things. Handle this case.

ping(8) now shows better precisions. Fixes from Paul Fleischer.

Ok by releng.

- add MBR editing menu to sysinst.
- fix typos in timecounter names.
- make sure to drain Tx FIFO to avoid clobbering
kernel boot messages.
- allow to have the 3rd UART.
- add missing time-of-day clock support.

Ok by releng.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.11.2; 1.11.6;
#include <sys/bus.h> instead of <machine/bus.h>.

fix slow TOD clock.

branches: 1.9.6; 1.9.10; 1.9.12; 1.9.14;
Convert evbarm to timecounter. Only one of the systems was tested, the
rest of the patch is compile-time tested only.

Cleanup softint lossage.

branches: 1.7.20; 1.7.24; 1.7.26; 1.7.32; 1.7.38;
Add generic TOD support. From Bucky Katz.

branches: 1.6.20; 1.6.24;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.4.2;
Fix -Wcast-qual by sprinkling some consts, and remove named
parameters from a function prototype to avoid shadowing.
Also fix a couple of other shadowing problems.

branches: 1.3.4;
+ fix the definition of timer #4 observation register. This change fixed
delay() bug.

+ match the names of timer registers to those in user's manual.

various bug fixes. Now SMDK2410 evboard boots up to single user mode
using install ramdisk.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

Merge kernel changes in matt-armv6 to HEAD.

branches: 1.7.6; 1.7.8; 1.7.10;
Cleanup softint lossage.

branches: 1.6.46; 1.6.50; 1.6.52; 1.6.58; 1.6.66;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.4.16;
Fix GCC 3 barfage.

bit polarity of interrupt mask registers don't match between s3c2800
and s3c24[10]0. define macro s3c2xx0_update_hw_mask() for it.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

branches: 1.1.2; 1.1.4;
Clean up evbarm interrupt support a little:
* Define an ARM_INTR_IMPL option, which specifies a header file
describing the interrupt implementation for the platform. Use
this instead of the list of EVBARM_BOARDTYPE checks.
* Make the s3c2xx0 interrupt dispatch code a bit more generic, and move
it to a generic location so that other platforms can use it.

This eliminates all uses of the EVBARM_BOARDTYPE stuff, so delete it.

fix various typos in comments and log messages, mainly s/hight/high/
s/hight/height/ and removing double m in time(ing).

branches: 1.15.24;
malloc(9) -> kmem(9)

branches: 1.14.8;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.12.18; 1.12.20;
Remove dead returns:

return VAR/func(XX);
return VAR;

The latter is never reached. Sent on tech-kern@, no disagreement.

Delete unused variables for new gcc.

branches: 1.10.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.9.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

adjust wsfont_find()

branches: 1.7.2; 1.7.6;
#include <sys/bus.h> instead of <machine/bus.h>.

__FUNCTION__ -> __func__

branches: 1.5.16; 1.5.20; 1.5.22; 1.5.30; 1.5.34;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.4.14;
Add missing parameter to s3c24x0_lcd_{ioctl,mmap} functions (after the
change in wscons that modified their signature) to let this build again.
Pointed out by he@.

branches: 1.3.4; 1.3.6; 1.3.8; 1.3.10; 1.3.12;
merge ktrace-lwp.

branches: 1.2.2;
Fix -Wcast-qual by sprinkling some consts, and remove named
parameters from a function prototype to avoid shadowing.
Also fix a couple of other shadowing problems.

branches: 1.1.4;
Support S3C24X0's on-chip LCD controller.

lcd driver can be configured with or without wsdisplay.
With wsdisplay, it supports text mode using rasops in 8bpp or 16bpp.
Without it, users only can mmap(2) the framebuffer.

XXX: 1-, 2-, 4-, or 24- bpp mode is not supported yet.
XXX: S3C24x0's LCD controller can have virtual screen which is bigger
than actual LCD panel. Our wsdisplay framework doesn't have
features to utilize it.

s/controll/control/ in comments.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.5.2; 1.5.6;
#include <sys/bus.h> instead of <machine/bus.h>.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.3.14;
Add missing parameter to s3c24x0_lcd_{ioctl,mmap} functions (after the
change in wscons that modified their signature) to let this build again.
Pointed out by he@.

branches: 1.2.4; 1.2.6; 1.2.8; 1.2.10; 1.2.12;
merge ktrace-lwp.

branches: 1.1.4; 1.1.18;
Support S3C24X0's on-chip LCD controller.

lcd driver can be configured with or without wsdisplay.
With wsdisplay, it supports text mode using rasops in 8bpp or 16bpp.
Without it, users only can mmap(2) the framebuffer.

XXX: 1-, 2-, 4-, or 24- bpp mode is not supported yet.
XXX: S3C24x0's LCD controller can have virtual screen which is bigger
than actual LCD panel. Our wsdisplay framework doesn't have
features to utilize it.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.2.114; 1.2.118;
merge ktrace-lwp.

branches: 1.1.4;
SPI support for Samsung S3C2410.

spi driver doesn't provide any actual I/O, and attaches child drivers
for devices that hooked to SPI ports.

s/controll/control/ in comments.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.9.10; 1.9.14;
Modify definitions for ULCOM register of UART according to S3C2800
User's manual rev 1.3.

The values of ULCON_PARITY_SHIFT and ULCON_IR are now same to those
for S3C2410. So the definitions are moved to s3c2xx0reg.h. (Old
definitions from User's manual rev1.1 were differ to those for
S3C2410, and that was why I put them in s3c2800reg.h and s3c24x0reg.h.
There's no description in errata about this changes.)

Also, fix the value for UMSTAT_DCTS on 2800.

The values of UMCON_AFC and UMSTAT_DCTS still differ between 2800 and
2410.

Reported by Brett Slager. Thank you very much.

branches: 1.8.80; 1.8.100;
merge ktrace-lwp.

branches: 1.7.4;
add register definitions for LCD controller, AD converter, and SPI.

be consistent with #define<TAB>

Minor tweak for some macros elsewhere.

+ fix the definition of timer #4 observation register. This change fixed
delay() bug.

+ match the names of timer registers to those in user's manual.

move some definitions of register block size from s3c24[10]0reg.h
to s3c24x0reg.h when they are same for S3C2410 and 2400, and rename them as
S3C24X0_FOO_SIZE.

+ fix TCON register bit definitions. Thank you Samsung for stupid
register design.

+ add definitions for UART registers that are not compatible with
S3C2800's.

the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.3.114; 1.3.118;
merge ktrace-lwp.

Switch SMDK2410 and SMDK2800 kernels to use pmap_devmap_bootstrap() to map
I/O registers that are used in early start-up stage. This replaces the
special bootstrap-time-only bus_space_map function in smdk{2410,2800}_machdep.c.

This makes SMDK{2410,2800}'s initarm() a bit simpler, and gives us smaller diffs
to other evbarm platforms.

An another good thing for SMDK2800 is that now we have all built-in peripheral
registers mapped in 2 segments. We may expect less TLB miss on I/O access
(very slightly).

branches: 1.1.4; 1.1.10; 1.1.12;
the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

Merge thorpej-cfargs2.

branches: 1.15.8;
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: 1.14.52;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.13.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.12.2; 1.12.6;
#include <sys/bus.h> instead of <machine/bus.h>.

merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.9.2;
adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes

Switch SMDK2410 and SMDK2800 kernels to use pmap_devmap_bootstrap() to map
I/O registers that are used in early start-up stage. This replaces the
special bootstrap-time-only bus_space_map function in smdk{2410,2800}_machdep.c.

This makes SMDK{2410,2800}'s initarm() a bit simpler, and gives us smaller diffs
to other evbarm platforms.

An another good thing for SMDK2800 is that now we have all built-in peripheral
registers mapped in 2 segments. We may expect less TLB miss on I/O access
(very slightly).

branches: 1.7.8; 1.7.10;
+ cleanup attach message.
+ use aprint_normal()

change an arg of s3c2800_clk_freq() to match with s3c24x0_clk_freq().

__KERNEL_RCSID()

branches: 1.4.2;
+ use SWRCON register for software reset.

+ add s3c2800_clock_freq(): calculate [FHP]CLK from values in PLL
control registers and S3C2XX0_XTAL_CLK.

fix typo in an error message. reported by Jonathan Cline on port-arm.

Use aprint_normal() for cfprint routines.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

For struct timecounter, use C99 initializers.
Compile tested. No functional changes intended.

- add MBR editing menu to sysinst.
- fix typos in timecounter names.
- make sure to drain Tx FIFO to avoid clobbering
kernel boot messages.
- allow to have the 3rd UART.
- add missing time-of-day clock support.

Ok by releng.

branches: 1.16.2; 1.16.6;
#include <sys/bus.h> instead of <machine/bus.h>.

Ansify function definitions w/o arguments. Generated with sed.

branches: 1.14.4; 1.14.10;
fix slow TOD clock.

branches: 1.13.6; 1.13.10; 1.13.12; 1.13.14;
Fix up my last commit. statintr and a misnamed variable slipped through.

Convert evbarm to timecounter. Only one of the systems was tested, the
rest of the patch is compile-time tested only.

Cleanup softint lossage.

branches: 1.10.20; 1.10.24; 1.10.26; 1.10.32; 1.10.38;
Add generic TOD support. From Bucky Katz.

branches: 1.9.20; 1.9.24;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.7.2;
Fix a shadowing warning by renaming an (unused) function parameter.

delete an incorrecct comment
delete unused definitions

__KERNEL_RCSID()

branches: 1.4.2;
+ use system's real PCLK frequency for calculation, instead of a compile
time constant.

+ make delay() more accurate.

add an arg to s3c2800_intr_establish() for interrupt type.

Don't need to explicitly include <arm/s3c2xx0/s3c2xx0_intr.h>.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Remove unnecessary sys/malloc.h include

#include <sys/bus.h> instead of <machine/bus.h>.

Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

branches: 1.11.22;
Merge kernel changes in matt-armv6 to HEAD.

branches: 1.10.6; 1.10.8; 1.10.10;
Cleanup softint lossage.

branches: 1.9.46; 1.9.50; 1.9.52; 1.9.58; 1.9.66;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.7.16;
tweak to share s3c2xx0_intr.c for S3C2800 and S3C2410.

move init_interrupt_masks() from s3c2xx0_intr.c to s3c2800_intr.c, since
it doesn't work for S3C2410.

+ enable nested interrupts. This change stopped silo overflow messages
at 115200bps.

+ disable all hard interrupts by default.

+ rewrite s3c2xx0_(un)mask_interrupt() to make them faster.

__KERNEL_RCSID()

branches: 1.4.2;
+ add an arg to s3c2800_intr_establish() for interrupt type:
IST_EDGE_{FALLING,RISING,BOTH}, or IST_LEVEL_{LOW,HIGH}. This
argument is valid only for GPIO interrupts (IRQ0..7).

+ Don't clear interrupt pending bits for IIC in interrupt handler.
Since clearing these bits starts next IIC transmission immediately,
IIC driver should handle these.

Fiddle with current_intr_depth in assembly code again. Because we
have just pushed a frame, we can make some assumptions that the
compiler cannot as easily make, and can thus do it slightly more
efficiently.

Don't need to explicitly include <arm/s3c2xx0/s3c2xx0_intr.h>.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Cleanup softint lossage.

branches: 1.4.46; 1.4.50; 1.4.52; 1.4.58; 1.4.66;
merge ktrace-lwp.

branches: 1.3.16;
bit polarity of interrupt mask registers don't match between s3c2800
and s3c24[10]0. define macro s3c2xx0_update_hw_mask() for it.

tweak to share s3c2xx0_intr.c for S3C2800 and S3C2410.

move init_interrupt_masks() from s3c2xx0_intr.c to s3c2800_intr.c, since
it doesn't work for S3C2410.

branches: 1.1.2; 1.1.4;
Clean up evbarm interrupt support a little:
* Define an ARM_INTR_IMPL option, which specifies a header file
describing the interrupt implementation for the platform. Use
this instead of the list of EVBARM_BOARDTYPE checks.
* Make the s3c2xx0 interrupt dispatch code a bit more generic, and move
it to a generic location so that other platforms can use it.

This eliminates all uses of the EVBARM_BOARDTYPE stuff, so delete it.

s/itnerrupt/interrupt/

s/boundries/boundaries/, s/itterate/iterate/ and few more typos.

Merge thorpej-cfargs2.

branches: 1.31.8;
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: 1.30.2;
malloc(9) -> kmem(9)

branches: 1.29.2;
Overhaul the interface to pci_configure_bus():
- Don't expose how PCI bus configuration resource management is implemented.
Provide a new resource provider API:

==> pciconf_resource_init() -- Initialize a PCI configuration resources
container.
==> pciconf_resource_add() -- Add a PCI configuration resource to the
container (I/O, MEM, or prefetchable MEM). Multiple resources of
each type may be added.
==> pciconf_resource_fini() -- Tear down the PCI configurtation resources
container once the bus has been configured.

This is much easier to use than the previous method of providing an
extent map for each kind of resource, and works better for e.g. ACPI
platforms that provide potentially multiple PCI resources in tables
provided by firmware.

- Re-implement PCI configuration resource management using vmem arenas,
rather than extent maps.

replace EX_NOWAIT with EX_WAITOK in device attach methods.
remove checks for failures that can no longer occur.

in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

Switch to designated initializers

Add intr_establish_xname support to arm and expose it to intrctl

Fix build after recent arm32_pci_chipset change

branches: 1.23.10; 1.23.12;
Initialize intr_setattr of arm32_pci_chipset

branches: 1.22.2; 1.22.4;
PCI Extended Configuration stuff written by nonaka@:
- Add PCI Extended Configuration Space support into x86.
- Check register offset of pci_conf_read() in MD part. It returns (pcireg_t)-1
if it isn't accessible.
- Decode Extended Capability in PCI Extended Configuration Space.
Currently the following extended capabilities are decoded:
- Advanced Error Reporting
- Virtual Channel
- Device Serial Number
- Power Budgeting
- Root Complex Link Declaration
- Root Complex Event Collector Association
- Access Control Services
- Alternative Routing-ID Interpretation
- Address Translation Services
- Single Root IO Virtualization
- Page Request
- TPH Requester
- Latency Tolerance Reporting
- Secondary PCI Express
- Process Address Space ID
- LN Requester
- L1 PM Substates
The following extended capabilities are not decoded yet:
- Root Complex Internal Link Control
- Multi-Function Virtual Channel
- RCRB Header
- Vendor Unique
- Configuration Access Correction
- Multiple Root IO Virtualization
- Multicast
- Resizable BAR
- Dynamic Power Allocation
- Protocol Multiplexing
- Downstream Port Containment
- Precision Time Management
- M-PCIe
- Function Reading Status Queueing
- Readiness Time Reporting
- Designated Vendor-Specific

branches: 1.21.6;
make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

<arm/locore.h> fallout (fixes some include ordering errors)

branches: 1.19.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.18.2;
Fix more pci_conf_interrupt/pci_conf_hook problems

converting extent(9) from malloc(9) to kmem(9)
preceding kmem-vmem-pool-uvm patch

releng@ acknowledged

branches: 1.16.2; 1.16.6;
#include <sys/bus.h> instead of <machine/bus.h>.

PCI_FLAGS_IO_ENABLED and PCI_FLAGS_MEM_ENABLED changed their functional
role in NetBSD (drivers are no longer supposed to write these to
pa_flags) without changing name. Correct that.

Rename PCI_FLAGS_IO_ENABLED to PCI_FLAGS_IO_OKAY and
PCI_FLAGS_MEM_ENABLED to PCI_FLAGS_MEM_OKAY, thus making their names
consistent with the other PCI flags and poisoning 3rd-party driver
sources that use the flags in the old bad way.

This patch produces no binary changes in this set of PCI kernels when
they are compiled w/o 'options DIAGNOSTIC' and w/ -V MKREPRO=yes:

algor P4032 P5064 P6032
alpha GENERIC
amd64 GENERIC XEN3_DOM0
arc GENERIC
atari HADES MILAN-PCIIDE
bebox GENERIC
cats GENERIC
cobalt GENERIC
evbarm-el ADI_BRH ARMADILLO9 CP3100 GEMINI GEMINI_MASTER GEMINI_SLAVE
evbarm-el GUMSTIX HDL_G IMX31LITE INTEGRATOR IQ31244 IQ80310 IQ80321
evbarm-el IXDP425 IXM1200 KUROBOX_PRO
evbarm-el LUBBOCK MARVELL_NAS NAPPI NSLU2 SHEEVAPLUG SMDK2800 TEAMASA_NPWR
evbarm-el TEAMASA_NPWR_FC TS7200 TWINTAIL ZAO425
evbmips-el AP30 DBAU1500 DBAU1550 MALTA MERAKI MTX-1 OMSAL400 RB153 WGT624V3
evbmips64-el XLSATX
evbppc EV64260 MPC8536DS MPC8548CDS OPENBLOCKS200 OPENBLOCKS266
evbppc OPENBLOCKS266_OPT P2020RDB PMPPC RB800 WALNUT
hp700 GENERIC
i386 ALL XEN3_DOM0 XEN3_DOMU
ibmnws GENERIC
iyonix GENERIC
landisk GENERIC
macppc GENERIC
mvmeppc GENERIC
netwinder GENERIC
ofppc GENERIC
prep GENERIC
sandpoint GENERIC
sbmips-el GENERIC
sgimips GENERIC32_IP2x GENERIC32_IP3x
sparc GENERIC_SUN4U KRUPS
sparc64 GENERIC

Neither pci_dma64_available(), pci_probe_device(), pci_mapreg_map(9),
pci_find_rom(), pci_intr_map(9), pci_enumerate_bus(), nor the match
predicate passed to pciide_compat_intr_establish() should ever modify
their pci_attach_args argument, so make their pci_attach_args arguments
const and deal with the fallout throughout the kernel.

For the most part, these changes add a 'const' where there was no
'const' before, however, some drivers and MD code used to modify
pci_attach_args. Now those drivers either copy their pci_attach_args
and modify the copy, or refrain from modifying pci_attach_args:

Xen: according to Manuel Bouyer, writing to pci_attach_args in
pci_intr_map() was a leftover from Xen 2. Probably a bug. I
stopped writing it. I have not tested this change.

siside(4): sis_hostbr_match() needlessly wrote to pci_attach_args.
Probably a bug. I use a temporary variable. I have not tested this
change.

slide(4): sl82c105_chip_map() overwrote the caller's pci_attach_args.
Probably a bug. Use a local pci_attach_args. I have not tested
this change.

viaide(4): via_sata_chip_map() and via_sata_chip_map_new() overwrote the
caller's pci_attach_args. Probably a bug. Make a local copy of the
caller's pci_attach_args and modify the copy. I have not tested
this change.

While I'm here, make pci_mapreg_submap() static.

With these changes in place, I have tested the compilation of these
kernels:

alpha GENERIC
amd64 GENERIC XEN3_DOM0
arc GENERIC
atari HADES MILAN-PCIIDE
bebox GENERIC
cats GENERIC
cobalt GENERIC
evbarm-eb NSLU2
evbarm-el ADI_BRH ARMADILLO9 CP3100 GEMINI GEMINI_MASTER GEMINI_SLAVE GUMSTIX
HDL_G IMX31LITE INTEGRATOR IQ31244 IQ80310 IQ80321 IXDP425 IXM1200
KUROBOX_PRO LUBBOCK MARVELL_NAS NAPPI SHEEVAPLUG SMDK2800 TEAMASA_NPWR
TEAMASA_NPWR_FC TS7200 TWINTAIL ZAO425
evbmips-el AP30 DBAU1500 DBAU1550 MALTA MERAKI MTX-1 OMSAL400 RB153 WGT624V3
evbmips64-el XLSATX
evbppc EV64260 MPC8536DS MPC8548CDS OPENBLOCKS200 OPENBLOCKS266
OPENBLOCKS266_OPT P2020RDB PMPPC RB800 WALNUT
hp700 GENERIC
i386 ALL XEN3_DOM0 XEN3_DOMU
ibmnws GENERIC
macppc GENERIC
mvmeppc GENERIC
netwinder GENERIC
ofppc GENERIC
prep GENERIC
sandpoint GENERIC
sgimips GENERIC32_IP2x
sparc GENERIC_SUN4U KRUPS
sparc64 GENERIC

As of Sun Apr 3 15:26:26 CDT 2011, I could not compile these kernels
with or without my patches in place:

### evbmips-el GDIUM

nbmake: nbmake: don't know how to make /home/dyoung/pristine-nbsd/src/sys/arch/mips/mips/softintr.c. Stop

### evbarm-el MPCSA_GENERIC
src/sys/arch/evbarm/conf/MPCSA_GENERIC:318: ds1672rtc*: unknown device `ds1672rtc'

### ia64 GENERIC

/tmp/genassym.28085/assym.c: In function 'f111':
/tmp/genassym.28085/assym.c:67: error: invalid application of 'sizeof' to incomplete type 'struct pcb'
/tmp/genassym.28085/assym.c:76: error: dereferencing pointer to incomplete type

### sgimips GENERIC32_IP3x

crmfb.o: In function `crmfb_attach':
crmfb.c:(.text+0x2304): undefined reference to `ddc_read_edid'
crmfb.c:(.text+0x2304): relocation truncated to fit: R_MIPS_26 against `ddc_read_edid'
crmfb.c:(.text+0x234c): undefined reference to `edid_parse'
crmfb.c:(.text+0x234c): relocation truncated to fit: R_MIPS_26 against `edid_parse'
crmfb.c:(.text+0x2354): undefined reference to `edid_print'
crmfb.c:(.text+0x2354): relocation truncated to fit: R_MIPS_26 against `edid_print'

branches: 1.13.32; 1.13.38;
Cleanup softint lossage.

branches: 1.12.16; 1.12.20; 1.12.22; 1.12.28; 1.12.34;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.11.26;
bus_dmamem_map: honour BUS_DMA_NOWAIT. noted by Manuel Bouyer.
bus_space_map: always do NOWAIT allocation as it used to be before yamt-km.

we have too many copies!

branches: 1.10.2; 1.10.8;
merge yamt-km branch.
- don't use managed mappings/backing objects for wired memory allocations.
save some resources like pv_entry. also fix (most of) PR/27030.
- simplify kernel memory management API.
- simplify pmap bootstrap of some ports.
- some related cleanups.

branches: 1.9.4; 1.9.6;
Phase out the use of a string as first "attach args" member to control
which bustype should be attached with a specific call to config_found()
(from a "mainbus" or a bus bridge).
Do it for isa/eisa/mca and pci/agp for now. These buses all attach to
an mi interface attribute "isabus", "eisabus" etc., and the autoconf
framework now allows to specify an interface attribute on config_found()
and config_search(), which limits the search of matching config data
to these which attach to that specific attribute.
So we basically have to call config_found_ia(..., "foobus", ...) where
such a bus is attached.
As a consequence, where a "mainbus" or alike also attaches other
devices (eg CPUs) which do not attach to a specific attribute yet,
we need at least pass an attribute name (different from "foobus") so
that the foo bus is not found at these places. This made some minor
changes necessary which are not obviously related to the mentioned buses.

Update for new pci_devinfo(9) signature.

__KERNEL_RCSID()

branches: 1.6.2;
don't map PCI device's I/O ports at address 0.

This fixed a problem when 3com 3C905 is a only PCI card on SMDK2800.

Handle 64bit DMA addresses on PCI for platforms that can (currently only
enabled on amd64). Add a dmat64 field to various PCI attach structures,
and pass it down where needed. Implement a simple new function called
pci_dma64_available(pa) to test if 64bit DMA addresses may be used.
This returns 1 iff _PCI_HAVE_DMA64 is defined in <machine/pci_machdep.h>,
and there is more than 4G of memory.

add an arg to s3c2800_intr_establish() for interrupt type.

Use PAGE_SIZE rather than NBPG.

Use aprint_normal() for cfprint routines.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

s/controll/control/ in comments.

Modify definitions for ULCOM register of UART according to S3C2800
User's manual rev 1.3.

The values of ULCON_PARITY_SHIFT and ULCON_IR are now same to those
for S3C2410. So the definitions are moved to s3c2xx0reg.h. (Old
definitions from User's manual rev1.1 were differ to those for
S3C2410, and that was why I put them in s3c2800reg.h and s3c24x0reg.h.
There's no description in errata about this changes.)

Also, fix the value for UMSTAT_DCTS on 2800.

The values of UMCON_AFC and UMSTAT_DCTS still differ between 2800 and
2410.

Reported by Brett Slager. Thank you very much.

branches: 1.6.80; 1.6.100;
merge ktrace-lwp.

Switch SMDK2410 and SMDK2800 kernels to use pmap_devmap_bootstrap() to map
I/O registers that are used in early start-up stage. This replaces the
special bootstrap-time-only bus_space_map function in smdk{2410,2800}_machdep.c.

This makes SMDK{2410,2800}'s initarm() a bit simpler, and gives us smaller diffs
to other evbarm platforms.

An another good thing for SMDK2800 is that now we have all built-in peripheral
registers mapped in 2 segments. We may expect less TLB miss on I/O access
(very slightly).

branches: 1.4.8; 1.4.10;
be consistent with #define<TAB>

Samsung's S3C2800 and S3C24[10]0 CPUs have same built-in UART block,
but there are very small diffs in register definitions. For that, add
new options SSCOM_S3C{2800,2410,2400} and include appropriate
s3c*reg.h.

SSCOM_S3C2410 is also needed for interrupt controller differences.

branches: 1.2.2;
add PLLCON register definitions.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

merge ktrace-lwp.

Switch SMDK2410 and SMDK2800 kernels to use pmap_devmap_bootstrap() to map
I/O registers that are used in early start-up stage. This replaces the
special bootstrap-time-only bus_space_map function in smdk{2410,2800}_machdep.c.

This makes SMDK{2410,2800}'s initarm() a bit simpler, and gives us smaller diffs
to other evbarm platforms.

An another good thing for SMDK2800 is that now we have all built-in peripheral
registers mapped in 2 segments. We may expect less TLB miss on I/O access
(very slightly).

branches: 1.5.8; 1.5.10;
change an arg of s3c2800_clk_freq() to match with s3c24x0_clk_freq().

branches: 1.4.2;
+ use SWRCON register for software reset.

+ add s3c2800_clock_freq(): calculate [FHP]CLK from values in PLL
control registers and S3C2XX0_XTAL_CLK.

add an arg to s3c2800_intr_establish() for interrupt type.

delete duplicated #include. reported by Jonathan Cline on port-arm.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

<sys/extent.h> not needed here.

Add bounce buffer support for ARM bus_dma(9). Add macros to help initialize
bus_dma_tag structures.

branches: 1.4.2; 1.4.12;
#include <sys/bus.h> instead of <machine/bus.h>.

merge ktrace-lwp.

branches: 1.2.4;
forgot to add copyright.

add s3c2xx0_busdma.c which is used to initialize bus dma tag.

Remove unnecessary sys/malloc.h include

kill sprintf

GC __raise.

branches: 1.16.6; 1.16.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.15.2; 1.15.6;
#include <sys/bus.h> instead of <machine/bus.h>.

Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits. Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

branches: 1.13.22;
Merge kernel changes in matt-armv6 to HEAD.

branches: 1.12.6; 1.12.8; 1.12.10;
Cleanup softint lossage.

branches: 1.11.24; 1.11.28; 1.11.30; 1.11.36; 1.11.44;
s/heirarchy/hierarchy/, from Zafer.

branches: 1.10.20; 1.10.22;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.8.16;
add a function to initialize variables used by splfoo().
This should be called in bootstrap so that splfoo() doesn't touch illegal address.

initialize global_intr_mask.

tweak to share s3c2xx0_intr.c for S3C2800 and S3C2410.

move init_interrupt_masks() from s3c2xx0_intr.c to s3c2800_intr.c, since
it doesn't work for S3C2410.

+ enable nested interrupts. This change stopped silo overflow messages
at 115200bps.

+ disable all hard interrupts by default.

+ rewrite s3c2xx0_(un)mask_interrupt() to make them faster.

__KERNEL_RCSID()

branches: 1.3.2;
Rename IPL_IMP -> IPL_VM.

Don't need to explicitly include <arm/s3c2xx0/s3c2xx0_intr.h>.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

#include <sys/evcnt.h>

branches: 1.14.6; 1.14.10;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.13.16; 1.13.20;
Don't include <machine/atomic.h> anymore.

branches: 1.12.6; 1.12.8;
Merge kernel changes in matt-armv6 to HEAD.

branches: 1.11.6; 1.11.8; 1.11.10;
Cleanup softint lossage.

branches: 1.10.36; 1.10.46; 1.10.50; 1.10.52; 1.10.58; 1.10.66;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.8.2;
Add an __UNVOLATILE() in atomic_set_bit() usage.
Revisit if we can adjust atomic_set_bit()'s signature.

be consistent with #define<TAB>

add a function to initialize variables used by splfoo().
This should be called in bootstrap so that splfoo() doesn't touch illegal address.

Fix GCC 3.3.1 nits.

bit polarity of interrupt mask registers don't match between s3c2800
and s3c24[10]0. define macro s3c2xx0_update_hw_mask() for it.

+ enable nested interrupts. This change stopped silo overflow messages
at 115200bps.

+ disable all hard interrupts by default.

+ rewrite s3c2xx0_(un)mask_interrupt() to make them faster.

branches: 1.2.2;
Clean up evbarm interrupt support a little:
* Define an ARM_INTR_IMPL option, which specifies a header file
describing the interrupt implementation for the platform. Use
this instead of the list of EVBARM_BOARDTYPE checks.
* Make the s3c2xx0 interrupt dispatch code a bit more generic, and move
it to a generic location so that other platforms can use it.

This eliminates all uses of the EVBARM_BOARDTYPE stuff, so delete it.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Clean up evbarm interrupt support a little:
* Define an ARM_INTR_IMPL option, which specifies a header file
describing the interrupt implementation for the platform. Use
this instead of the list of EVBARM_BOARDTYPE checks.
* Make the s3c2xx0 interrupt dispatch code a bit more generic, and move
it to a generic location so that other platforms can use it.

This eliminates all uses of the EVBARM_BOARDTYPE stuff, so delete it.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

use designated initializer to make adaptability and flexibility for changing struct bus_space.
no functional change.

branches: 1.9.52;
#include <sys/bus.h> instead of <machine/bus.h>.

Add a flags argument to pmap_kenter_pa(9).
Patch showed on tech-kern@ http://mail-index.netbsd.org/tech-kern/2009/11/04/msg006434.html
No objections.

branches: 1.7.80;
bus_dmamem_map: honour BUS_DMA_NOWAIT. noted by Manuel Bouyer.
bus_space_map: always do NOWAIT allocation as it used to be before yamt-km.

we have too many copies!

branches: 1.6.2; 1.6.8;
s3c2xx0_bs_unmap: overlooked yamt-km API update.
from Havard Eidnes, tweaked by me.

merge yamt-km branch.
- don't use managed mappings/backing objects for wired memory allocations.
save some resources like pv_entry. also fix (most of) PR/27030.
- simplify kernel memory management API.
- simplify pmap bootstrap of some ports.
- some related cleanups.

Switch SMDK2410 and SMDK2800 kernels to use pmap_devmap_bootstrap() to map
I/O registers that are used in early start-up stage. This replaces the
special bootstrap-time-only bus_space_map function in smdk{2410,2800}_machdep.c.

This makes SMDK{2410,2800}'s initarm() a bit simpler, and gives us smaller diffs
to other evbarm platforms.

An another good thing for SMDK2800 is that now we have all built-in peripheral
registers mapped in 2 segments. We may expect less TLB miss on I/O access
(very slightly).

branches: 1.3.8; 1.3.10;
Use generic versions of rr_1, wr_1, sr_1 -- some PCMCIA cards use these.

__KERNEL_RCSID()

branches: 1.1.2; 1.1.8;
Samsung S3C2800 is a CPU with ARM920T core.

iTypo in comment.

branches: 1.6.10; 1.6.20; 1.6.24;
Modify definitions for ULCOM register of UART according to S3C2800
User's manual rev 1.3.

The values of ULCON_PARITY_SHIFT and ULCON_IR are now same to those
for S3C2410. So the definitions are moved to s3c2xx0reg.h. (Old
definitions from User's manual rev1.1 were differ to those for
S3C2410, and that was why I put them in s3c2800reg.h and s3c24x0reg.h.
There's no description in errata about this changes.)

Also, fix the value for UMSTAT_DCTS on 2800.

The values of UMCON_AFC and UMSTAT_DCTS still differ between 2800 and
2410.

Reported by Brett Slager. Thank you very much.

branches: 1.5.80; 1.5.100;
merge ktrace-lwp.

be consistent with #define<TAB>

Samsung's S3C2800 and S3C24[10]0 CPUs have same built-in UART block,
but there are very small diffs in register definitions. For that, add
new options SSCOM_S3C{2800,2410,2400} and include appropriate
s3c*reg.h.

SSCOM_S3C2410 is also needed for interrupt controller differences.

branches: 1.2.2;
Fix UFCON RX trigger level definitions.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.6.2; 1.6.6;
#include <sys/bus.h> instead of <machine/bus.h>.

make SMDK2410 kernel compile again after changes to sys/param.h

branches: 1.4.102;
merge ktrace-lwp.

add busdma tag to s3c2xx0_softc and attach arg.

initialize busdma tag in s3c2410_attach()

branches: 1.2.2;
add fields to hold FCLK, HCLK, and PCLK frequency.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

ddb/db_active.h: New home for extern db_active.

This can be included unconditionally, and db_active can then be
queried unconditionally; if DDB is not in the kernel, then db_active
is a constant zero. Reduces need for #include opt_ddb.h, #ifdef DDB.

malloc(9) -> kmem(9)

branches: 1.48.8;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

branches: 1.47.18;
MD rnd.h cleanups. Please let me know if I broke anything!

branches: 1.46.4;
Merge tls-earlyentropy branch into HEAD.

Add d_discard to all struct cdevsw instances I could find.

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

branches: 1.44.2;
Remove unneeded dependencies

Exclude sscom_init() prototype definition when its not declared later

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.

Cleanup sscom to make more SoC invariant

Delete unused variables for new gcc.

branches: 1.39.4;
For a polled console incoming characters are buffered on output.
The buffer is never passed to the regular tty routines and can
survive from early boot to halt where it is read by the "press
any continue to reboot" loops.
As a workaround, just kill the read-ahead buffer when switching
from and to polled mode.

split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.37.6;

- add MBR editing menu to sysinst.
- fix typos in timecounter names.
- make sure to drain Tx FIFO to avoid clobbering
kernel boot messages.
- allow to have the 3rd UART.
- add missing time-of-day clock support.

Ok by releng.

fix the build

Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.33.4; 1.33.8;
Rename ttymalloc() to tty_alloc(), and ttyfree() to tty_free() for
consistency. Remove some unnecessary malloc.h inclusions as well.

branches: 1.32.4; 1.32.6;
Make this one build again.

Simplify the device-activation hook. Move some of the device
deactivation to the detachment routine, where it belongs.

Use lwp_getpcb() on ARM (and acorn26/32), clean from struct user usage.

use device_lookup_private to get softc

branches: 1.28.2; 1.28.4;
Remove clause 3 and 4 from TNF licenses

branches: 1.27.14; 1.27.16; 1.27.18;
Use the softint API.

- Factor out too many copies of the same bit of tty code.
- Fix another tty signalling/wakeup problem.

branches: 1.25.2;
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: 1.24.6; 1.24.8; 1.24.10; 1.24.12; 1.24.16;
Generic soft interrupts are mandatory.

Adapt to new signature for callout_init().

branches: 1.22.2; 1.22.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.21.4;
More from Matt Fleming:

Adapt to KAUTH_DEVICE_TTY_PRIVSET and KAUTH_DEVICE_TTY_OPEN.

Adapt MD code to KAUTH_DEVICE_TTY_OPEN. Patch from Matt Fleming, thanks!

branches: 1.19.4; 1.19.6;
Use the LWP cached credentials where sane.

integrate kauth.

Use device_unit().

branches: 1.16.2; 1.16.4; 1.16.6;
Use device_is_active() rather than testing dv_flags for DVF_ACTIVE
directly.

branches: 1.15.2; 1.15.4; 1.15.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

Change the driver open function's conditional for overriding exclusive tty
use from checking the proc's uid to suser(9), and account for the use of
privileges. Noted by David Holland in PR kern/31126.

branches: 1.12.2;
Add some const and rename a local variable to avoid shadowing.

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

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

Samsung's S3C2800 and S3C24[10]0 CPUs have same built-in UART block,
but there are very small diffs in register definitions. For that, add
new options SSCOM_S3C{2800,2410,2400} and include appropriate
s3c*reg.h.

SSCOM_S3C2410 is also needed for interrupt controller differences.

split sscomintr() to sscomtxintr() and sscomrxintr().

__KERNEL_RCSID()

branches: 1.7.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

struct proc * -> struct lwp *

Make sure to include opt_foo.h if a defflag option FOO is used.

+ fix a bug to think FIFO full as FIFO empty.

+ on rx buffer overflow case, disable error interrupt as wel as rx
interrupt.

+ FIFO is always enabled.

white space nit.

Initialize the two new members of "struct consdev" to NULL, so that
this file compiles again.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Remove unnecessary sys/malloc.h include

Cleanup sscom to make more SoC invariant

branches: 1.6.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.5.6;

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.4.2; 1.4.6;
#include <sys/bus.h> instead of <machine/bus.h>.

Use lwp_getpcb() on ARM (and acorn26/32), clean from struct user usage.

branches: 1.2.80;
merge ktrace-lwp.

branches: 1.1.4;
the first cut of Samsung S3C2410 support.
It is Samsung's another ARM920 based SoC.

XXX: not tested much yet.

Cleanup sscom to make more SoC invariant

branches: 1.3.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.2.4; 1.2.6; 1.2.10;

- add MBR editing menu to sysinst.
- fix typos in timecounter names.
- make sure to drain Tx FIFO to avoid clobbering
kernel boot messages.
- allow to have the 3rd UART.
- add missing time-of-day clock support.

Ok by releng.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

Remove unnecessary sys/malloc.h include

Cleanup sscom to make more SoC invariant

branches: 1.9.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.8.2; 1.8.12;
#include <sys/bus.h> instead of <machine/bus.h>.

Use lwp_getpcb() on ARM (and acorn26/32), clean from struct user usage.

branches: 1.6.80;
merge ktrace-lwp.

split sscomintr() to sscomtxintr() and sscomrxintr().

__KERNEL_RCSID()

branches: 1.3.2;
use system's real PCLK frequency instead of a compile time constant for
baudrate divisor setup.

add an arg to s3c2800_intr_establish() for interrupt type.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.

Include <sys/rndsource.h> where it is actually used.

I had removed <sys/rnd.h> from files that didn't mention anything of
the rnd(9) API. But they included other files which assumed
<sys/rnd.h> had already been included.

branches: 1.13.6;
Cleanup sscom to make more SoC invariant

branches: 1.12.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

branches: 1.11.6;
Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.

Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.

branches: 1.9.2;
First step of random number subsystem rework described in
<20111022023242.BA26F14A158@mail.netbsd.org>. This change includes
the following:

An initial cleanup and minor reorganization of the entropy pool
code in sys/dev/rnd.c and sys/dev/rndpool.c. Several bugs are
fixed. Some effort is made to accumulate entropy more quickly at
boot time.

A generic interface, "rndsink", is added, for stream generators to
request that they be re-keyed with good quality entropy from the pool
as soon as it is available.

The arc4random()/arc4randbytes() implementation in libkern is
adjusted to use the rndsink interface for rekeying, which helps
address the problem of low-quality keys at boot time.

An implementation of the FIPS 140-2 statistical tests for random
number generator quality is provided (libkern/rngtest.c). This
is based on Greg Rose's implementation from Qualcomm.

A new random stream generator, nist_ctr_drbg, is provided. It is
based on an implementation of the NIST SP800-90 CTR_DRBG by
Henric Jungheim. This generator users AES in a modified counter
mode to generate a backtracking-resistant random stream.

An abstraction layer, "cprng", is provided for in-kernel consumers
of randomness. The arc4random/arc4randbytes API is deprecated for
in-kernel use. It is replaced by "cprng_strong". The current
cprng_fast implementation wraps the existing arc4random
implementation. The current cprng_strong implementation wraps the
new CTR_DRBG implementation. Both interfaces are rekeyed from
the entropy pool automatically at intervals justifiable from best
current cryptographic practice.

In some quick tests, cprng_fast() is about the same speed as
the old arc4randbytes(), and cprng_strong() is about 20% faster
than rnd_extract_data(). Performance is expected to improve.

The AES code in src/crypto/rijndael is no longer an optional
kernel component, as it is required by cprng_strong, which is
not an optional kernel component.

The entropy pool output is subjected to the rngtest tests at
startup time; if it fails, the system will reboot. There is
approximately a 3/10000 chance of a false positive from these
tests. Entropy pool _input_ from hardware random numbers is
subjected to the rngtest tests at attach time, as well as the
FIPS continuous-output test, to detect bad or stuck hardware
RNGs; if any are detected, they are detached, but the system
continues to run.

A problem with rndctl(8) is fixed -- datastructures with
pointers in arrays are no longer passed to userspace (this
was not a security problem, but rather a major issue for
compat32). A new kernel will require a new rndctl.

The sysctl kern.arandom() and kern.urandom() nodes are hooked
up to the new generators, but the /dev/*random pseudodevices
are not, yet.

Manual pages for the new kernel interfaces are forthcoming.

branches: 1.8.2;
#include <sys/bus.h> instead of <machine/bus.h>.

Remove SET/CLR/ISSET macros.

branches: 1.6.4; 1.6.6; 1.6.8;
merge ktrace-lwp.

branches: 1.5.16;
Samsung's S3C2800 and S3C24[10]0 CPUs have same built-in UART block,
but there are very small diffs in register definitions. For that, add
new options SSCOM_S3C{2800,2410,2400} and include appropriate
s3c*reg.h.

SSCOM_S3C2410 is also needed for interrupt controller differences.

split sscomintr() to sscomtxintr() and sscomrxintr().

branches: 1.3.2;
Make sure to include opt_foo.h if a defflag option FOO is used.

+ fix a bug to think FIFO full as FIFO empty.

+ on rx buffer overflow case, disable error interrupt as wel as rx
interrupt.

+ FIFO is always enabled.

branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.