Commit Graph

918 Commits

Author SHA1 Message Date
jake
4f8dd3b959 Made the prototypes for pmap_kenter and pmap_kremove MD. These functions
are machine dependent because they are not required to update the tlb when
mappings are added or removed, and doing so is machine dependent.
In addition, an implementation may require that pages mapped with pmap_kenter
have a backing vm_page_t, which is not necessarily true of all physical
pages, and so may choose to pass the vm_page_t to pmap_kenter instead of the
physical address in order to make this requirement clear.
2003-03-16 04:16:03 +00:00
mux
90f311efb8 Bah, get it right this time and add sys/lock.h before sys/mutex.h. 2003-03-14 13:30:31 +00:00
mux
62daf20ba8 Oops, add missing includes. Pass me the pointy hat.
Reported by:	jake
2003-03-14 00:04:37 +00:00
mux
f834cef113 Grab Giant around calls to contigmalloc() and contigfree() so
that drivers converted to be MP safe don't have to deal with it.
2003-03-13 17:18:48 +00:00
mux
35953f3b7d Memory allocated with contigmalloc() should be freed with
contigfree(), not with free().
2003-03-13 17:10:54 +00:00
marcel
86ab2164e6 Fix two rounds of breakages and cleanup. Remove the sccdebug sysctl
while I'm here and garbage collect dead code (ssc_clone). Define
d_maxsize as DFLTPHYS for now because that's what it will be if we
don't define it.
2003-03-10 01:58:31 +00:00
phk
d7d1ad0eb0 Centralize the devstat handling for all GEOM disk device drivers
in geom_disk.c.

As a side effect this makes a lot of #include <sys/devicestat.h>
lines not needed and some biofinish() calls can be reduced to
biodone() again.
2003-03-08 08:01:31 +00:00
marcel
507cec9987 Fix threaded applications on ia64 that are linked dynamicly. We did
not save (restore) the global pointer (GP) in the jmpbuf in setjmp
(longjmp) because it's not needed in general. GP is considered a
scratch register at callsites and hence is always restored after a
call (when it's possible that the call resolves to a symbol in a
different loadmodule; otherwise GP does not have to be saved and
restored at all), including calls to setjmp/longjmp. There's just
one problem with this now that we use setjmp/longjmp for context
switching: A new context must have GP defined properly for the
thread's entry point. This means that we need to put GP in the
jmpbuf and consequently that we have to restore is in longjmp.
This automaticly requires us to save it as well.

When setjmp/longjmp isn't used for context switching, this can be
reverted again.
2003-03-05 04:39:24 +00:00
marcel
83864dff2c ABI breaker: Move the J_SIGMASK field in the jmpbuf before
the J_SIG0 field. While here, rename J_SIG0 to J_SIGSET and
remove J_SIG1. The main reason for this change is that the
128-bit sigset_t is now aligned on a 16-byte boundary, which
allows us to use 16-byte atomic loads and stores on CPUs that
support it. The removal of J_SIG1 is done to avoid confusion:
it is never accessed and should not be. Renaming J_SIG0 to
J_SIGSET is the icing on the cake that's better done now than
later.
2003-03-05 03:30:54 +00:00
jhb
96d7c30c59 Replace calls to WITNESS_SLEEP() and witness_list() with equivalent calls
to WITNESS_WARN().
2003-03-04 21:03:05 +00:00
phk
c0f52402d6 Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
alc
796195af23 MFi386 revision 1.88
Remove some long unused declarations.
2003-03-01 10:02:11 +00:00
davidxu
d4e09abad6 Needn't kse.h 2003-02-27 03:16:35 +00:00
julian
0d22df7a73 Change the process flags P_KSES to be P_THREADED.
This is just a cosmetic change but I've been meaning to do it for about a year.
2003-02-27 02:05:19 +00:00
mux
7a8bf572d5 Correctly set BUS_SPACE_MAXSIZE in all the busdma backends.
It was bogusly set to 64 * 1024 or 128 * 1024 because it was
bogusly reused in the BUS_DMAMAP_NSEGS definition.
2003-02-26 02:16:06 +00:00
mux
aaed4e8c72 Cleanup of the d_mmap_t interface.
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00
phk
ece947dbac Change the console interface to pass a "struct consdev *" instead of a
dev_t to the method functions.

The dev_t can still be found at struct consdev *->cn_dev.

Add a void *cn_arg element to struct consdev which the drivers can use
for retrieving their softc.
2003-02-20 20:54:45 +00:00
imp
1493fd6e76 Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
julian
ef97cea82c Fix missed patch in last commit 2003-02-17 10:21:32 +00:00
julian
f9e7584a83 Move a bunch of flags from the KSE to the thread.
I was in two minds as to where to put them in the first case..
I should have listenned to the other mind.

Submitted by:	 parts by davidxu@
Reviewed by:	jeff@ mini@
2003-02-17 09:55:10 +00:00
marcel
2ad36490ae Define _ALIGNBYTES to be 15. This should have been done right away. 2003-02-17 09:53:29 +00:00
marcel
565f0f5d07 Print two new processor features:
o  Spontaneous deferral (A feature required by dutch railways :-)
o  16-byte atomic operations (ld, st, cmpxchg)
2003-02-17 08:17:26 +00:00
jeff
f13eb23073 - Split the struct kse into struct upcall and struct kse. struct kse will
soon be visible only to schedulers.  This greatly simplifies much the
   KSE code.

Submitted by:	davidxu
2003-02-17 05:14:26 +00:00
jeff
0540df6168 - Move ke_sticks, ke_iticks, ke_uticks, ke_uu, ke_su, and ke_iu back into
the proc.  These counters are only examined through calcru.

Submitted by:	davidxu
Tested on:	x86, alpha, UP/SMP
2003-02-17 02:19:58 +00:00
phk
674c779422 Remove #include <sys/dkstat.h> 2003-02-16 14:13:23 +00:00
marcel
98a7da16c8 Fix misuse of Maxmem in the calculation of the VHPT size. Maxmem
is already in pages, so we should not convert from bytes to pages.
The result of this bug was bad scaling of the VHPT relative to the
available memory.

Submitted by: Arun Sharma <arun@sharma-home.net>
2003-02-15 20:58:32 +00:00
obrien
6f4536f453 Fix the style of the SCHED_4BSD commit. 2003-02-13 22:24:44 +00:00
alc
3d9cc51ae4 MFi386
Remove kptobj.  Instead, use VM_ALLOC_NOOBJ.
2003-02-13 07:03:44 +00:00
mike
f24f4396dd Implement fpclassify():
o Add a MD header private to libc called _fpmath.h; this header
  contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
  contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
  storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
  double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
  HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
  <math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
  <machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
  on the size of its argument.  __fpclassifyl() is never called on
  alpha because (sizeof(long double) == sizeof(double)), which is good
  since __fpclassifyl() can't deal with such a small `long double'.

This was developed by David Schultz and myself with input from bde and
fenner.

PR:		23103
Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
		(significant portions)
Reviewed by:	bde, fenner (earlier versions)
2003-02-08 20:37:55 +00:00
harti
cfabde465e Fix a problem in bus_dmamap_load_{mbuf,uio} when the first mbuf or the first
uio segment is empty. In this case no dma segment is create by
bus_dmamap_load_buffer, but the calling routine clears the first flag.
Under certain combinations of addresses of the first and second mbuf/uio
buffer this leads to corrupted DMA segment descriptors. This was already
fixed by tmm in sparc64/sparc64/iommu.c.

PR:		kern/47733
Reviewed by:	sam
Approved by:	jake (mentor)
2003-02-04 16:30:27 +00:00
jake
20c365593b Split statclock into statclock and profclock, and made the method for driving
statclock based on profhz when profiling is enabled MD, since most platforms
don't use this anyway.  This removes the need for statclock_process, whose
only purpose was to subdivide profhz, and gets the profiling clock running
outside of sched_lock on platforms that implement suswintr.
Also changed the interface for starting and stopping the profiling clock to
do just that, instead of changing the rate of statclock, since they can now
be separate.

Reviewed by:	jhb, tmm
Tested on:	i386, sparc64
2003-02-03 17:53:15 +00:00
marcel
f0120276c4 Don't use the 'c' partition for mounting root. A disklabel is very
likely not present under the simulator. If multiple partitions are
present on the virtual disk, then the 'a' partition would be the
most logical choice. Nowadays partitions are GPT based, which would
make the assumption of a disklabel even more questionable. Given
all the possible scenarios, assuming a raw "device" seems best.
2003-02-03 01:10:01 +00:00
alfred
f37a9e30eb Consolidate MIN/MAX macros into one place (param.h).
Submitted by: Hiten Pandya <hiten@unixdaemons.com>
2003-02-02 13:17:30 +00:00
phk
c628d89005 We don't need sscopen() and sscclose().
Register sscstrategy directly, instead of using a cdevsw{} for the purpose.

Tested by:	marcel
2003-02-02 10:22:34 +00:00
marcel
543f379233 Export IA32 from opt_ia32.h to assembly so that we can eliminate
saving and restoring ia32 specific registers when switching
context and ia32 support has not been compiled-in. The primary
reason for this change is that one of the ia32 registers (ar.fcr)
is wrongly marked as invalid by the simulator. Now that we avoid
using the register when possible, usability is improved. The
secundary reason is that it saves us 7 loads and stores.

Note that the PCB will continue to have room for these registers,
irrespective of the IA32 option. There are no benefits that make
it worthwhile.
2003-02-02 09:07:15 +00:00
marcel
494acc1366 Remove special casing for running in the simulator from the kernel
and instead add platform, firmware and EFI stubs to the loader.
The net effect of this change is that besides a special console and
disk driver, the kernel has no knowledge of the simulator. This has
the following advantages:
o  Simulator support is much harder to break,
o  It's easier to make use of more feature complete simulators.
   This would only need a change in the simulator specific loader,
o  Running SMP kernels within the simulator. Note that ski at this
   time does not simulate IPIs, so there's no way to start APs.

The platform, firmware and EFI stubs describe the following hardware:
o  4 CPU Itanium,
o  128 MB RAM within the 4GB address space,
o  64 MB RAM above the 4GB address space.

NOTE: The stubs in the skiloader describe a machine that should in
parts be defined by the simulator. Things like processor interrupt
block and AP wakeup vector cannot be choosen at random because they
require interpretation by the simulator. Currently the simulator is
ignorant of this.

This change introduces an unofficial SSC call SSC_SAL_SET_VECTORS
which is ignored by the simulator.

Tested with: ski (version 0.943 for linux)
2003-02-01 22:50:09 +00:00
joe
a979feb9c4 Put replace spaces with tabs in keeping with the rest of the file. 2003-02-01 18:45:18 +00:00
julian
51407f5934 Reversion of commit by Davidxu plus fixes since applied.
I'm not convinced there is anything major wrong with the patch but
them's the rules..

I am using my "David's mentor" hat to revert this as he's
offline for a while.
2003-02-01 12:17:09 +00:00
phk
cf2011d170 Remove D_CANFREE from sscdisk.c.
I belive it got here by copy&paste and I see no signs in the source
code that BIO_DELETE was dealt with correctly and can only wonder
what kind of trouble this may have caused.
2003-01-30 11:48:50 +00:00
julian
d159ba4aa7 Unbreak SMP cases for these architectures.
statclock_process() changed arguments.
note: it may be worth checking if curkse is needed on these architectures..
(and if so, why?)
2003-01-27 00:00:06 +00:00
davidxu
684d994243 Move UPCALL related data structure out of kse, introduce a new
data structure called kse_upcall to manage UPCALL. All KSE binding
and loaning code are gone.

A thread owns an upcall can collect all completed syscall contexts in
its ksegrp, turn itself into UPCALL mode, and takes those contexts back
to userland. Any thread without upcall structure has to export their
contexts and exit at user boundary.

Any thread running in user mode owns an upcall structure, when it enters
kernel, if the kse mailbox's current thread pointer is not NULL, then
when the thread is blocked in kernel, a new UPCALL thread is created and
the upcall structure is transfered to the new UPCALL thread. if the kse
mailbox's current thread pointer is NULL, then when a thread is blocked
in kernel, no UPCALL thread will be created.

Each upcall always has an owner thread. Userland can remove an upcall by
calling kse_exit, when all upcalls in ksegrp are removed, the group is
atomatically shutdown. An upcall owner thread also exits when process is
in exiting state. when an owner thread exits, the upcall it owns is also
removed.

KSE is a pure scheduler entity. it represents a virtual cpu. when a thread
is running, it always has a KSE associated with it. scheduler is free to
assign a KSE to thread according thread priority, if thread priority is changed,
KSE can be moved from one thread to another.

When a ksegrp is created, there is always N KSEs created in the group. the
N is the number of physical cpu in the current system. This makes it is
possible that even an userland UTS is single CPU safe, threads in kernel still
can execute on different cpu in parallel. Userland calls kse_create to add more
upcall structures into ksegrp to increase concurrent in userland itself, kernel
is not restricted by number of upcalls userland provides.

The code hasn't been tested under SMP by author due to lack of hardware.

Reviewed by: julian
2003-01-26 11:41:35 +00:00
jeff
9bcb2c885f - Introduce the SCHED_ULE and SCHED_4BSD options for compile time selection
of the scheduler.
 - Add SCHED_4BSD as the scheduler for all kernel config files in cvs.
2003-01-26 05:29:12 +00:00
dfr
a4984964b0 Fix pmap_extract so that it doesn't panic if the user types
'cat /proc/pid/map'

Submitted by: Arun Sharma <arun.sharma@intel.com>
2003-01-24 09:58:32 +00:00
alfred
8f5153c3ea Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
jeff
ece68d74bd - Add a VM_WAIT in the appropriate cases where vm_page_alloc() fails and flags
indicate that uma_small_alloc should not.  This code should be refactored so
   that there is not so much cross arch duplication.

Reviewed by:	jake
Spotted by:	tmm
Tested on:	alpha, sparc64
Pointy hat to:	jeff and everyone who cut and pasted the bad code. :-)
2003-01-21 05:44:52 +00:00
jake
5828d6147f Resolve relative relocations in klds before trying to parse the module's
metadata.  This fixes module dependency resolution by the kernel linker on
sparc64, where the relocations for the metadata are different than on other
architectures; the relative offset is in the addend of an Elf_Rela record
instead of the original value of the location being patched.
Also fix printf formats in debug code.

Submitted by:	Hartmut Brandt <brandt@fokus.gmd.de>
PR:		46732
Tested on:	alpha (obrien), i386, sparc64
2003-01-21 02:42:44 +00:00
phk
f1a2ff2a45 We need neither <sys/diskslice.h> nor <sys/disklabel.h> here. 2003-01-20 11:11:51 +00:00
mux
b7babb3b23 Don't try to free() map in bus_dmamap_destroy() when it's
set to &nobounce_dmamap.  A similar bug was fixed by wpaul
in revision 1.19 of sys/alpha/alpha/busdma_machdep.c.
2003-01-18 18:33:56 +00:00
dillon
3a12bfd702 Merge all the various copies of vm_fault_quick() into a single
portable copy.
2003-01-16 00:02:21 +00:00
dillon
0b031db6ca Merge all the various copies of vmapbuf() and vunmapbuf() into a single
portable copy.  Note that pmap_extract() must be used instead of
pmap_kextract().

This is precursor work to a reorganization of vmapbuf() to close remaining
user/kernel races (which can lead to a panic).
2003-01-15 23:54:35 +00:00
marcel
3ab83cb9b6 Move ia64_sapics and ia64_sapic_count from interrupt.c to sapic.c
and declare them extern in interrupt.c. This eliminates the need
for ia64_add_sapic(), which is called from sapic.c.
While here, reformat ia64_enable() in interrupt.c to improve
indentation and add a sysctl (machdep.apic) to dump the I/O APIC
entries currently programmed into all I/O APICs. The latter can
help analyze interrupt problems.
Note that the sysctl is not intended as a userland (software)
interface. It may be changed in the future to include counters
so that vmstat -i can make use of it. It may also be removed...
2003-01-06 02:09:08 +00:00
peter
1dcfed6790 Move the itm reload to a single place rather than having two identical
copies of the reload.  Note that we use the precomputed itm_reload value
so that we can avoid a division in the kernel.  The ia64 cpu does not
have integer divide, so this would have been done by a floating point
operation.
2003-01-06 01:53:55 +00:00
marcel
badba6b94a Replace the hardcoding of 255 as the clock interrupt vector with
CLOCK_VECTOR and define it as 254, not 255. Vector 255 is already
in use as the AP wakeup vector on the HP rx2600.

This needs to be made more dynamic. The likelyhood of vector 254
being in use is pretty small, but we already have code to assign
vectors to IPIs (see sal.c) and it's preobably better to have a
centralized "vector manager" that hands out vectors based on
some imput (like priority).
2003-01-06 01:39:25 +00:00
marcel
d3c0762aa9 Manually inline handleclock(). There's only a single caller and
handleclock itself is trivial.

While here, replace (itc_frequency+hz/2)/hz with itm_reload for
consistency. There's now a single place where we determine the
ITM reload value.
2003-01-06 00:38:35 +00:00
marcel
5cf2875fc6 Count interrupts as soon as possible. This makes sure interrupts are
counted even when there are no handlers.
2003-01-06 00:25:31 +00:00
marcel
e8fcbd2887 Don't hardcode the address of the local (S)APIC (aka processor
interrupt block). We use the previously hardcoded address as a
default only, but will otherwise use whatever ACPI tells us.
The address can be found in the MADT table header or in the
LAPIC override table entry.
2003-01-05 22:14:30 +00:00
marcel
4729095883 Bump the number of interrupts from 65 to 257. This is a waste of
space most of the time, but handles machines with lots of I/O
(S)APICs. We cannot make this more dynamic without breaking the
interface with vmstat. Hence, we need to fix the interface first.
2003-01-05 22:00:19 +00:00
marcel
d05a5c3d87 Handle 3-digit interrupt numbers (vectors). While here, change the
name of unused entries from "intr XXX" to "#XXX". This makes it
easier to debug interrupt problems, because vmstat can be hacked
more easily to dump all interrupt entries that are in use and not
those that have had interrupts.
2003-01-05 21:48:33 +00:00
marcel
9752def59b Make all memory I/O addresses (explicitly) 64-bit. Memory mapped
devices aren't necessarily mapped within 4GB. I/O port addresses
are offsets into the memory mapped I/O port space, which is not
larger than 16MB. No need to convert those to 64 bit types.
2003-01-05 21:40:45 +00:00
marcel
8bb2deb650 Provide a null-implementation for bus_space_unmap, like i386.
bus_space_unmap is required for puc(4).
2003-01-05 21:34:05 +00:00
marcel
16d23dbfee Adopt, adapt and improve:
o  Make the URL of the handbook match reality
o  Improve some comments (either wording or formatting)
o  Sync with i386: comment-out DDB, INVARIANTS, INVARIANT_SUPPORT
o  Add some more SCSI/RAID controllers:
	ahd, mpt, asr, ciss, dpt, iir, mly, ida
o  Remove support for the parallel port
o  Add NICs: em, bge
o  Remove NICs: ste, tl, tx, vr, wb
o  Enable USB support again, except of the UHCI host controller.
   UHCI still hangs the BigSur (=HP i2000) machines, and makes
   them useless. The OHCI controller works fine. Note that newer
   ia64 boxes based on the Intel host controllers (UHCI or EHCI)
   still won't have USB support. We really need to import the
   EHCI host controller from NetBSD...
2003-01-05 00:04:28 +00:00
alc
fb840a917c Hold the page queues lock around pmap_remove_pte() in pmap_enter().
Submitted by:	Arun Sharma <adsharma@unix-os.sc.intel.com>
2003-01-04 06:49:52 +00:00
marcel
3dbf44a1b5 Make this build and sync-up:
o  Add COMPAT_FREEBSD4
o  Remove NO_GEOM
o  Remove commented out options.
2003-01-03 23:10:47 +00:00
schweikh
c353aec149 Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
rwatson
549d7a30bb Synchronize to kern/syscalls.master:1.139.
Obtained from:	TrustedBSD Project
2002-12-29 20:33:26 +00:00
tjr
cbdfee6d6f MB_LEN_MAX is not MD, move it to the MI limits.h. 2002-12-22 06:38:45 +00:00
marcel
cefd7b189a More MFp4: DIG64 structures. 2002-12-18 18:52:20 +00:00
marcel
e14b74690e Export the physical address of the RSDP to userland by means
of the `machdep.acpi_root' sysctl. This is required on ia64
because the root pointer hardly ever, if at all, lives in the
first MB of memory and also because scanning the first MB of
memory can cause machine checks.
This provides a save and reliable way for ACPI tools to work
with the tables if ACPI support is present in the kernel. On
ia64 ACPI is non-optional.
2002-12-18 08:47:07 +00:00
marcel
1171743e00 Check that the dump device is large enough. Otherwise we could
end up with a dump offset that's smaller than the start of the
dump device and either clobber data in preceding partitions or
try to write beyond the end of the medium (unsigned wrap).

Implement legacy behaviour to never write to the first 64KB as
that is where metadata (ie disklabels) may reside.
2002-12-17 02:51:56 +00:00
marcel
99fa0f4690 Regen: swapoff 2002-12-16 00:49:36 +00:00
marcel
5b53437fe5 Change swapoff from MNOPROTO to UNIMPL. The former doesn't work. 2002-12-16 00:48:52 +00:00
dillon
c2d085eb9b This is David Schultz's swapoff code which I am finally able to commit.
This should be considered highly experimental for the moment.

Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
MFC after:	3 weeks
2002-12-15 19:17:57 +00:00
alfred
5da2d203a3 SCARGS removal take II. 2002-12-14 01:56:26 +00:00
alfred
2b58666422 Backout removal SCARGS, the code freeze is only "selectively" over. 2002-12-13 22:41:47 +00:00
alfred
420936257d Remove SCARGS.
Reviewed by: md5
2002-12-13 22:27:25 +00:00
julian
cfb81f2986 Unbreak the KSE code. Keep track of zobie threads using the Per-CPU storage
during the context switch. Rearrange thread cleanups
to avoid problems with Giant. Clean threads when freed or
when recycled.

Approved by:	re (jhb)
2002-12-10 02:33:45 +00:00
marcel
386f1440d4 Use one of the bi_spare entries for the DIG64 HCDP table address.
The HCDP table is one (non-proprietary) way for the platform to
inform the OS about headless operation. This field would normally
hold the address as can be found by scanning the EFI system table,
which we also pass to the kernel. The apparent duplication allows
us to synthesize a HCDP table in the loader by whatever means we
can think of, including relocating the platform table into pre-
mapped address space. In short: it gives us more freedom.

Approved by: re (blanket)
2002-12-08 20:32:56 +00:00
marcel
a5b0e7e20b Disable SMP. It reduces the chance that the kernel boots. On top
of that, there's some nasty process corruption when running with
SMP.

Note that this was already in effect for the 5.0-RC1 kernels in
the form of a local patch.

Approved by: re (blanket)
2002-12-08 20:14:04 +00:00
alc
5873afed59 MFi386
Hold the page queues lock around vm_page_unhold() in vunmapbuf().

Approved by:	re (blanket)
2002-12-02 01:12:05 +00:00
marcel
9dab1e249f Implement bus_space_subregion(). Identical to i386.
Approved by: re (carte blanc)
2002-11-29 20:14:03 +00:00
marcel
b87df5fe1b Better handle sparse physical memory: Don't use the address range
as a measure for available memory to scale the VHPT. Instead, use
the previously determined Maxmem.

Approved by: re (carte blanc)
2002-11-29 20:10:21 +00:00
marcel
ebe739071b MFp4:
Add function map_port_space() to map the memory mapped I/O port
range as uncacheable virtual memory and call it prior to probing
for a console. This removes the dependency on the loader to have
done this for us. Note that this change does not include doing
the same for APs.

Approved by: re (blanket)
2002-11-24 20:15:08 +00:00
marcel
01749ff15b Fix comparison that caused a 1-off bug. This appeared harmless for
the kernel itself, but SAL on Itanium2 machines spontaneously
rebooted the machine.

Approved by: re (blanket)
Submitted by: Arun Sharma <adsharma@unix-os.sc.intel.com>
2002-11-24 20:07:23 +00:00
mux
ade777863c Under certain circumstances, we were calling kmem_free() from
i386 cpu_thread_exit().  This resulted in a panic with WITNESS
since we need to hold Giant to call kmem_free(), and we weren't
helding it anymore in cpu_thread_exit().  We now do this from a
new MD function, cpu_thread_dtor(), called by thread_dtor().

Approved by:	re@
Suggested by:	jhb
2002-11-22 23:57:02 +00:00
alc
5865ae9bc2 MFi386 r1.369
- Clear the PG_WRITEABLE flag in pmap_page_protect() if write access is
   being removed.  Return immediately if write access is being removed and
   PG_WRITEABLE is already clear.
2002-11-17 21:48:42 +00:00
deischen
4f7bdf3039 Regenerate after adding syscalls. 2002-11-16 23:48:14 +00:00
deischen
b1fce77dca Add *context() syscalls to ia64 32-bit compatability table as requested
in kern/syscalls.master.
2002-11-16 15:15:17 +00:00
deischen
c173708724 Add getcontext, setcontext, and swapcontext as system calls.
Previously these were libc functions but were requested to
be made into system calls for atomicity and to coalesce what
might be two entrances into the kernel (signal mask setting
and floating point trap) into one.

A few style nits and comments from bde are also included.

Tested on alpha by: gallatin
2002-11-16 06:35:53 +00:00
peter
074b811e7a Do not assume that time_t is an int.
Approved by:	re (jhb)
2002-11-15 22:36:57 +00:00
peter
6004c3a05b Test the water. Make time_t long (64 bit) on ia64 since we do not have
to worry about ABI vs released systems yet.  This is mostly transparent
since there is no significant exposure in the syscall interface.  The
things that go wrong are mostly userland stuff - time(&intvariable).

Reviewed by:	dfr, marcel
Approved by:	re (jhb)
2002-11-15 22:35:34 +00:00
alc
9d27d6b6ea Move pmap_collect() out of the machine-dependent code, rename it
to reflect its new location, and add page queue and flag locking.

Notes: (1) alpha, i386, and ia64 had identical implementations
of pmap_collect() in terms of machine-independent interfaces;
(2) sparc64 doesn't require it; (3) powerpc had it as a TODO.
2002-11-13 05:39:58 +00:00
marcel
6909b46641 ia64 ABI breaker:
Don't force 16-byte alignment at run-time. Do it at compile-time.
This saves us the pointer fiddling by the setjmp functions and
reduces complexity. While here, increase the jmp_buf by 16 bytes
to an even 512 bytes. Coincidentally, due to the way alignment
was handled prior to this change, the jmp_buf has not changed in
size, but only in how the space is used. Prior to this change
the 16 bytes were reserved for enforcing alignment; now they are
reserved by us for future extensions.
Therefore, this ABI breaker is relatively save: the failure is
always an alignment trap.
2002-11-11 08:11:44 +00:00
alc
9fa92171da - Clear the page's PG_WRITEABLE flag in the i386's pmap_changebit()
if we're removing write access from the page's PTEs.
 - Export pmap_remove_all() on alpha, i386, and ia64.  (It's already
   exported on sparc64.)
2002-11-11 05:17:34 +00:00
marcel
ce7ccc15e5 Comment-out USB support. A kernel doesn't boot with it. Deal with it
later.
2002-11-11 01:50:10 +00:00
des
9634218b3d Print real / avail memory in megabytes rather than kilobytes. 2002-11-09 16:19:14 +00:00
tmm
d9ab4e307e Move the definitions of the hw.physmem, hw.usermem and hw.availpages
sysctls to MI code; this reduces code duplication and makes all of them
available on sparc64, and the latter two on powerpc.
The semantics by the i386 and pc98 hw.availpages is slightly changed:
previously, holes between ranges of available pages would be included,
while they are excluded now. The new behaviour should be more correct
and brings i386 in line with the other architectures.

Move physmem to vm/vm_init.c, where this variable is used in MI code.
2002-11-07 23:57:17 +00:00
jmallett
c9da5e8fcb Remove what was a temporary bogus assignment of bits of siginfo_t, as it does
not look like the prerequisites to fill it in properly will be in the tree
for the upcoming release, but it's mostly done, so there is no need for these
to stay around to remind us.
2002-11-06 14:53:35 +00:00
marcel
5384ae5c1d Define UMA_MD_SMALL_ALLOC so that we can allocate memory with region
7 addresses for use by page tables and kernel stacks.

Obtained from: peter
2002-11-06 04:47:38 +00:00
marcel
c3b1ca8259 o Remove devices that are commented out.
o  Enable sc
o  Remove NO_GEOM. We need GEOM for GPT.
o  Remove NO_CPU_COPTFLAGS.
2002-11-05 08:35:37 +00:00
marcel
da5451791e Remove mcclock. It's an Alpha left-over. 2002-11-05 08:23:26 +00:00