cache ops common to 060 and 040. Also remove the now-redundant
definitions for the 060 variant which simply pointed to the 040
variants.
This fixes the build of the mvme68k VME172 kernel.
was optimizing away modifications to the frame contents (it's not nice to
trick gcc). Pass the pointer as the first argument to reduce the number
of places that would be changed otherwise. Fixes the getcwd regression
test on most m68k ports.
cache ops are identical between M68040 and M68060 and they are not
available on M68020 and M68030, so no need to check cputype even on
multi CPU kernels and they can always be inlined.
This improves MI Sonic xfer speed ~5%.
http://mail-index.netbsd.org/port-mac68k/2007/06/07/0003.html
_pmap_page_is_cacheable() on all pmap_motorola.c ports and add
BUS_DMA_COHERENT support (from mvme68k) to common m68k bus_dma.c.
Tested with (not-yet-integrated) MI Sonic Ethernet driver on mac68k
http://mail-index.netbsd.org/port-mac68k/2007/06/07/0000.html
and ok'ed by thorpej.
Mostly taken from mvme68k.
Tested on (not yet integrated) mac68k SONIC Ethernet with MI dp83932.c.
XXX: should we also enable _pmap_set_page_cache{able,inhibit}()
XXX: functions in m68k/pmap_motorola.c for BUS_DMA_COHERENT support?
from proc_trampoline to match the other ports).
A DIAGNOSTIC kernel will now boot and run. LOCKDEBUG still doesn't work yet.
Also, my amiga no longer loses time.
an SR value or an IPL_* constant).
- Take advange of the smaller ipl_cookie_t to shrink kmutex_t from
16 bytes to 8 bytes by overlapping storage where possible.
- Implement a RAS-based _lock_cas() for mc68010 systems (Sun2). See
sun68k/sun68k/isr.c.
Tested on various m68k platforms, but NOT Sun2. In any case, at least
Sun2 compiles now.
to avoid exporting unnecessary files to userland.
Should fix build.sh failure, which was pointed out by isaki@.
XXX: which userland program would require contents of <machine/intr.h>?
with newlock2 merge:
Replace the Mach-derived boolean_t type with the C99 bool type. A
future commit will replace use of TRUE and FALSE with true and false.
int _bus_dmatag_subregion(bus_dma_tag_t tag,
bus_addr_t min_addr,
bus_addr_t max_addr,
bus_dma_tag_t *newtag,
int flags)
void _bus_dmatag_destroy(bus_dma_tag_t tag)
that allow a (normally broken/limited) device to restrict the bus address
range it can talk to. this is used by bce(4) to limit DMA addresses to
1GB range, the maximum the chip can address.
all this is from Yorick Hardy <yhardy@uj.ac.za> with input from several
people on tech-kern.
XXX: bus_dma(9) needs an update still.
P_*/L_* naming convention, and rename the in-kernel flags to avoid
conflict. (P_ -> PK_, L_ -> LW_ ). Add back the (now unused) LSDEAD
constant.
Restores source compatibility with pre-newlock2 tools like ps or top.
Reviewed by Andrew Doran.
register was inherited from proc0. Set the new process's status register
to PSL_LOWIPL. Raidframe reconstruction no longer causes my Amiga to lose
time.
Tested and verified on my Amiga (yes, I'm hoping to switch amiga to using
the common pmp_motorola.c).
Uvm changes over 17 months ago resulted in the 68040/060 segment table
page being entered with pmap_kenter(), which does not record the mapping
in the pv table. Attempting to inhibit caching of that page as required
by the 68060 hardware no longer changes the PTE and caused varying degrees
of multiple faulting, sometimes resulting in an unusable system. Apparently
very few people attempted to run a 68060 based system since that change.
Fix to to change the caching bits directly rather than using pmap_changebit().
visible to userland on m68k. Fixes numerous pkgsrc build issues where
"struct frame" as defined in cpuframe.h pollutes the local namespace.
Compile-tested full builds for hp300, mac68k, amiga, sun3, and next68k.
OK'ed by matt@.
modifies machine/db_machdep.h: BKPT_SET(inst) to BKPT_SET(inst, addr) for all archs ie; passess the
breakpoint address as well.
Patch from cherry@mahiti.org
trace_is_enabled() to return TRUE if SYSCALL_DEBUG is defined, and g/c
all of the SYSCALL_DEBUG handling from individual system call dispatch
routines.
- proc_is_traced_p() -> trace_is_enabled(), to match trace_enter() and
trace_exit().
- trace_is_enabled() becomes a real function.
- Remove unnecessary include files from various files that used to care
about KTRACE and SYSTRACE, but do no more.
- use vmspace rather than proc or lwp where appropriate.
the latter is more natural to specify an address space.
(and less likely to be abused for random purposes.)
- fix a swdmover race.
sys/bswap.h in order to pick up the MD inline routines and the constant
folding definitions in the right order.
Code can include either sys/bswap.h or machine/bswap.h with the same effect.
defined before it is used in the second of these.
Fixes a build problem for several of our m68k ports. I've been
waiting for a better fix, but now my "proper fix timeout" triggered.
i/o is done. Instead, pass an opaque cookie which is then passed to a
new routine, coredump_write, which does the actual i/o. This allows the
method of doing i/o to change without affecting any future MD code.
Also, make netbsd32_core.c [re]use core_netbsd.c (in a similar manner that
core_elf64.c uses core_elf32.c) and eliminate that code duplication.
cpu_coredump{,32} is now called twice, first with a NULL iocookie to fill
the core structure and a second to actually write md parts of the coredump.
All i/o is nolonger random access and is suitable for shipping over a stream.
distinction between signalling NaNs and quiet NaNs back into the
machine-dependent headers; treat the implementation of __nanf in the
same spirit.
IEEE 754 leaves the distinction between signalling NaNs and quiet NANs
to the implementation, and unlike our headers used to suggest they're
not identical in the interpretation of the fraction's MSb; in due
course, make those of hppa, mips, sh3, and sh5 reflect reality.
- 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.
to select the maximum segment size for each bus_dmamap_load (up to the maxsegsz
supplied to bus_dmamap_create). dm_maxsegsz is reset to the value supplied to
bus_dmamap_create when the dmamap is unloaded.
to four (adding size and direction).
In order for topdown uvm to be an option on ports using PMAP_PREFER,
they will need to "prefer" lower addresses if topdown is being used.
Additionally, at least one port also needs to know the size.
(c) TNF
line from 4-clause UCB to 3-clause UCB license; in other words,
remove UCB's ad clause from the license TNF grants.
There is no point in TNF demanding that UCB's ad clause be followed
when even UCB doesn't demand it any longer.
Ok'd by board@ and agc@.
process context ('reaper').
From within the exiting process context:
* deactivate pmap and free vmspace while we can still block
* introduce MD cpu_lwp_free() - this cleans all MD-specific context (such
as FPU state), and is the last potentially blocking operation;
all of cpu_wait(), and most of cpu_exit(), is now folded into cpu_lwp_free()
* process is now immediatelly marked as zombie and made available for pickup
by parent; the remaining last lwp continues the exit as fully detached
* MI (rather than MD) code bumps uvmexp.swtch, cpu_exit() is now same
for both 'process' and 'lwp' exit
uvm_lwp_exit() is modified to never block; the u-area memory is now
always just linked to the list of available u-areas. Introduce (blocking)
uvm_uarea_drain(), which is called to release the excessive u-area memory;
this is called by parent within wait4(), or by pagedaemon on memory shortage.
uvm_uarea_free() is now private function within uvm_glue.c.
MD process/lwp exit code now always calls lwp_exit2() immediatelly after
switching away from the exiting lwp.
g/c now unneeded routines and variables, including the reaper kernel thread
Gone are the old kern_sysctl(), cpu_sysctl(), hw_sysctl(),
vfs_sysctl(), etc, routines, along with sysctl_int() et al. Now all
nodes are registered with the tree, and nodes can be added (or
removed) easily, and I/O to and from the tree is handled generically.
Since the nodes are registered with the tree, the mapping from name to
number (and back again) can now be discovered, instead of having to be
hard coded. Adding new nodes to the tree is likewise much simpler --
the new infrastructure handles almost all the work for simple types,
and just about anything else can be done with a small helper function.
All existing nodes are where they were before (numerically speaking),
so all existing consumers of sysctl information should notice no
difference.
PS - I'm sorry, but there's a distinct lack of documentation at the
moment. I'm working on sysctl(3/8/9) right now, and I promise to
watch out for buses.
Remove p_raslock and rename p_lwplock p_lock (one lock is enough).
Simplify window test when adding a ras and correct test on VM_MAXUSER_ADDRESS.
Avoid unpredictable branch in i386 locore.S
(pad fields left in struct proc to avoid kernel bump)
precision back to machine-dependent headers. C99 has no strict
requirement which, if any, extended-precision type `long double' must
match, and even between 80-bit formats there are differences in
implementation (m68k vs. x86).
* On arm, consider __VFP_FP__.
* _UC_MACHINE_PC() - access the program counter
* _UC_MACHINE_INTRV() - access the integer return value register
* _UC_MACHINE_SET_PC() - set the program counter (this requires
special handling on some platforms).
Right now the only flag is used to indicate if a ksiginfo_t is a
result of a trap. Add a predicate macro to test for this flag.
* Add initialization macros for ksiginfo_t's.
* Add accssor macro for ksi_trap. Expands to 0 if the ksiginfo_t was
not the result of a trap. This matches the sigcontext trapcode semantics.
* In kpsendsig(), use KSI_TRAP_P() to select the lwp that gets the signal.
Inspired by Matthias Drochner's fix to kpsendsig(), but correctly handles
the case of non-trap-generated signals that have a > 0 si_code.
This patch fixes a signal delivery problem with threaded programs noted by
Matthias Drochner on tech-kern.
As discussed on tech-kern. Reviewed and OK's by Christos.
he