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Discussed and okay drahn@. Okay deraadt@.
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Okay guenther@, millert@.
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a physical address [more precisely, something suitable to pass to pmap_enter()'sphysical address argument].
This allows MI drivers to implement mmap() routines without having to know
about the pmap_phys_address() implementation and #ifdef obfuscation.
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for it. This makes the netisr a real C function which will help further
development. No noticable performance change on i386 and amd64.
With input from kettenis@ and miod@ additional OKs mikeb@ and henning@
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its better as a per arch MD define anyway. all default to MAXDSIZ as before.
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vaddr_t PMAP_PREFER(..., vaddr_t). This allows better compiler optimization
when the function is inlined, and avoids accessing memory on architectures
when we can pass function arguments in registers.
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implement them, and they are of questionable usefulness.
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userland traps on a per-process basis, were necessary for *some* SunOS
binaries on sparc, which had to compiled with explicit misaligned access code
generation (i.e. for vendors to release a working SunOS/sparc version of their
code until they could fix their bogus code).
There is no reason to keep this code on sparc64, and now that we don't provide
COMPAT_SUNOS anymore, there is no reason to keep this code on sparc.
ok kettenis@
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done to sparc64 a couple of months ago.
ok miod@
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sun4c, as it has a sun4c OpenPROM but a sun4 8KB pagesize. VME devices are
not supported yet.
ok deraadt@
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memory, but instead gather memory layout information and work with the MMU
(or the PROM) to make sure we can actually load the kernel image in a proper
contiguous physical memory area.
In order to do this, we look at the kernel image twice; during the first pass,
the kernel footprint is computed, and then after making sure it can be
loaded, the second pass loads the actual image.
Since such a logic doesn't work on media which can not seek backwards, such
as tapes, we check for the boot device being a tape and, in that case, assume
a fixed (generous) image size and don't load the kernel symbol table (to
avoid seeking backwards); since tape boot is supposed to be only used to
boot bsd.rd, this is something we can live with.
While there, lower the address the boot blocks are loaded in memory, because
the last crank did not work with some early sun4c OpenPROM, which only
map about 3.5MB of memory.
Memory games logic from NetBSD, tape handling by me.
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low physical memory, but instead figure out where it has been loaded from
the current MMU setup.
From NetBSD.
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space on SRMMU systems (i.e. sun4m), so don't do it anymore and update
misleading comments.
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doing thread-local storage and fix a typo in one that was already defined.
ok kettenis@ drahn@
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which contains the constraints for DMA/memory allocation for each
architecture, and dma_constraints which contains the range of addresses
that are dma accessable by the system.
This is based on ariane@'s physcontig diff, with lots of bugfixes and
additions the following additions by my self:
Introduce a new function pool_set_constraints() which sets the address
range for which we allocate pages for the pool from, this is now used
for the mbuf/mbuf cluster pools to keep them dma accessible.
The !direct archs no longer stuff pages into the kernel object in
uvm_km_getpage_pla but rather do a pmap_extract() in uvm_km_putpages.
Tested heavily by my self on i386, amd64 and sparc64. Some tests on
alpha and SGI.
"commit it" beck, art, oga, deraadt
"i like the diff" deraadt
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recommit pmemrange:
physmem allocator: change the view of free memory from single
free pages to free ranges. Classify memory based on region with
associated use-counter (which is used to construct a priority
list of where to allocate memory).
Based on code from tedu@, help from many.
Useable now that bugs have been found and fixed in most architecture's
pmap.c
ok by everyone who has done a pmap or uvm commit in the last year.
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like it is everything.h
ok tedu
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rather than defining it separately for each architecture.
Also set it to 4, to accommodate for future UTF-8 support (rfc3629).
Diff by stsp, committing to catch the libc major bump
ok kettenis@, guenther@
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ok jsing@, miod@
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reminded by STeve Andre.
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or'ed together, even on platforms where bus_space_barrier() ignores the
barrier argument yet.
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bus_space_alloc() as a bitmask of flags, and not a boolean controlling
cacheability; and make sure the three MI BUS_SPACE_MAP_xxx values documented
in the manual page are defined on all platforms as well.
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the sun4m iommu. Bits and pieces from NetBSD, with some additional tweaks
and a bus_dmamap_load_mbuf() implementation from myself.
ok miod@
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ok miod@
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kept in a separate intrhand array, with their own enable bits so that
soft interrupts sharing the same level only get invoked if really triggered.
Inspired by NetBSD with significant changes.
ok kettenis@
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MD code would free resources that couldn't be freed until we were no
longer running in that processor. However, it's is unused on all
architectures since mikeb@'s tss changes on x86 earlier in the year.
ok miod@
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levels. This will allow for platforms where soft interrupt levels do not
map to real hardware interrupt levels to have soft ipl values overlapping
hard ipl values without breaking spl asserts.
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APM_IOC_{SUSPEND,STANDBY}_REQ: This is to fix an issue with apm suspend
where a call to zzz suspended the machine immediately, not giving anyone
listening for apm events (other than apmd) a chance to deal with the
upcoming change. This hit X hard since the introduction of drm, since it
needs to have time to idle the 3d engine and otherwise get the device
into a recoverable state. Such things are needed until we support
modesetting in the kernel.
Now, instead of forcing a suspend, using ioctl sends out an event similar
to if you had put the lid down, giving all userland applications a
chance to reply.
tested by sthen@ and beck@, especial thanks to sthen for sitting there
while I tried to debug this remotely, I owe him beer.
Prompted by and ok deraadt@
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pmap_resident_count(). From NetBSD
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out by theo
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definitions. ok millert@. tested by jsg@
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licenses as well. Thanks!
"Groovy" deraadt
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protected by __ISO_C_VISIBLE > 1999. With a little help from miod@.
ok miod@
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- provide proper dtoa locks
- use the real strtof implementation
- add strtold, __hdtoa, __hldtoa
- add %a/%A support
- don't lose precision in printf, don't round to double anymore
- implement extended-precision versions of libc functions: fpclassify,
isnan, isinf, signbit, isnormal, isfinite, now that the ieee.h is
fixed
- separate vax versions of strtof, and __hdtoa
- add complex math support. added functions: cacos, casin, catan,
ccos, csin, ctan, cacosh, casinh, catanh, ccosh, csinh, ctanh, cexp,
clog, cabs, cpow, csqrt, carg, cimag, conj, cproj, creal, cacosf,
casinf, catanf, ccosf, csinf, ctanf, cacoshf, casinhf, catanhf,
ccoshf, csinhf, ctanhf, cexpf, clogf, cabsf, cpowf, csqrtf, cargf,
cimagf, conjf, cprojf, crealf
- add fdim, fmax, fmin
- add log2. (adapted implementation e_log.c. could be more acruate
& faster, but it's good enough for now)
- remove wrappers & cruft in libm, supposed to work-around mistakes
in SVID, etc.; use ieee versions. fixes issues in python 2.6 for
djm@
- make _digittoint static
- proper definitions for i386, and amd64 in ieee.h
- sh, powerpc don't really have extended-precision
- add missing definitions for mips64 (quad), m{6,8}k (96-bit) float.h
for LDBL_*
- merge lead to frac for m{6,8}k, for gdtoa to work properly
- add FRAC*BITS & EXT_TO_ARRAY32 definitions in ieee.h, for hdtoa&ldtoa
to use
- add EXT_IMPLICIT_NBIT definition, which indicates implicit
normalization bit
- add regression tests for libc: fpclassify and printf
- arith.h & gd_qnan.h definitions
- update ieee.h: hppa doesn't have quad-precision, hppa64 does
- add missing prototypes to gdtoaimp
- on 64-bit platforms make sure gdtoa doesn't use a long when it
really wants an int
- etc., what i may have forgotten...
- bump libm major, due to removed&changed symbols
- no libc bump, since this is riding on djm's libc major crank from
a day ago
discussed with / requested by / testing theo, sthen@, djm@, jsg@,
merdely@, jsing@, tedu@, brad@, jakemsr@, and others.
looks good to millert@
parts of the diff ok kettenis@
this commit does not include:
- man page changes
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uvm_map.c from requiring <machine/exec.h>.
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- math.h shouldn't define FLT_EVAL_METHOD, but float.h should (per
C99). remove from math.h, and add proper definitions in float.h
ok millert@
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Right now when mi_switch picks up the same proc, we didn't clear the
flag which would mean that every time we service an AST we would attempt
a context switch. For some architectures, amd64 being probably the
most extreme, that meant attempting to context switch for every
trap and interrupt.
Now we clear_resched explicitly after every context switch, even if it
didn't do anything. Which also allows us to remove some more code
in cpu_switchto (not done yet).
miod@ ok
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Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.
OK deraadt@
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own page 0, as discussed with miod (and many others previously, including
art and toby). On sparc, make this __LDPGSZ because PAGE_SIZE is non-constant
ok miod tedu
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ok miod@
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rpc/pmap_prot.h collide.. "struct pmap" from the kernel should not make
it out to userland.
ok miod
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from Rodolfo Gouveia
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