malloc(9) -> kmem(9)

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: 1.31.18;
Include sys/lwp.h instead of arm/cpu.h

sys/lwp.h is preferred because arm/cpu.h has a dependency on sys/lwp.h.

Suggested by skrll@ and matt@

Add missing #include <arm/cpu.h>

branches: 1.29.6;
kill sprintf

Mechanically replace simplelock with kmutex_t.

GC ipending.

Remove unused variable

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

branches: 1.24.2;
C99 types

branches: 1.23.2;
Remove irqframe and replace with identical trapframe.

branches: 1.22.2;
#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>.

Apply fixes for PR port-arm/43339:
Set proper IPL_SOFTfoo values even in !FAST_SOFTINTS case.
Some assertions in MI code expect they have unique values,
per comments from rmind@.

Also cleanup various "interrupt hierarchy" code since IPL_NONE and
IPL_SOFTfoo should not be set by any hardware interrupt establish functions.

Ok'ed by mrg@, tested on shark and hpcarm.

branches: 1.19.20; 1.19.22;
Remove clause 3 and 4 from TNF licenses

Merge kernel changes in matt-armv6 to HEAD.

branches: 1.17.6; 1.17.8; 1.17.10;
As of this commit, all arm32 kernel now build.

Truly kill current_intr_depth once and for all.

branches: 1.15.24; 1.15.28; 1.15.30; 1.15.36; 1.15.44;
s/heirarchy/hierarchy/, from Zafer.

branches: 1.14.20; 1.14.22;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

Fix one more missed clockframe -> irqframe transition.

branches: 1.11.16;
Fix GCC 3.3.1 nits.

Delaying to mask interrupt by hardware until actually it occurs.

The new code maintains two variables 'current_spl_level' and
'hardware_spl_level'. Variable hardware_spl_level reflects actual
priority level at the hardware's point of view. hardware_spl_level is
always synchronized to hardware.

splraise() just increases current_spl_level. splx() sets
current_spl_level. If (and only if) hardware_spl_level and
current_spl_level is not same, splx() synchronizes interrupt mask
register and hardware_spl_level to current_spl_level.

In most case, splraise() raises current_spl_level and splx() restores
only current_spl_level.

When an interrupt occurs, hardware_spl_level and interrupt mask
register are synchronized to current_spl_level.

In this implementation, during a higher priority interrupt handler is
running, lower priority interrupts never cause intr_dispatch() to run.
It will avoid some race condition.

code clean up

branches: 1.8.2;
Rename IPL_IMP -> IPL_VM.

Add __KERNEL_RCSID tags

fix incorrect interrupt mask handling.
pci_imask[IPL_NET] is incorrectly ORed on imask[IPL_SOFTSERIAL].
imask[IPL_NET] should be ORed.

files.ixp12x0
no need device ixpcom in evbarm/conf/files.evbarm move it to
arm/ixp12x0/files.ixp12x0

ixp12x0_com.c:
some fix around address handling
1. Do not call bus_space_map() in ixpcominit(). Calling bus_space_map()
is not safe here, because bus_space_map() calls uvm_km_valloc() but
uvm is not yet initialized.
2. Use dv_unit to determine console instead comparering iobase.
Now you can attach ixpcom0 with physical address like this:
ixpcom* at ixpsip? addr 0x90000000 size 0x4000
Statically mapped address (0xf0000000) is still usable.

ixp12x0_clk:
1. access PLL_CFG register via bus_space
2. Make the delay() working correctly. (bug fix)
3. Start the timer device without interrupt on attach time.
Now delay() called before cpu_initclocks() works fine.

ixp12x0_pci:
1.Mapping PCI type0/1 configuration space to the upper address.
2."PCI I/O Cycle Access" mapping to same virtual address(VA==PA)
but size of this mapping increase to 1MByte because fails
cause couldnt set L2 table.
3.use bus_space address handling in ixp12x0_pci.c.

use bus_space map

remove trailing \n in panic(). approved perry.

branches: 1.2.2; 1.2.4;
some bug fix and cosmetic changes

branches: 1.1.2;
add support for ixp12x0