Commit Graph

871 Commits

Author SHA1 Message Date
Jake Burkholder
e8237e53da - Reorganize PMAP_STATS to scale a little better.
- Add some more stats for things that are now considered interesting.
2003-01-05 05:30:40 +00:00
Jake Burkholder
3afb575773 Make imgact_elf32.c compile on sparc64.
Obtained from:	ia64
2003-01-05 03:48:55 +00:00
Jake Burkholder
75db2b5e27 Add a driver for the Zilog 8530 dual uart found in Ultra 1s and Ultra 2s.
With a 1 byte transmit fifo, 3 byte receive fifo, and wierd multiplexed I/O
designed for a Z80 cpu, this chip redefines suckage.

Based on the openbsd and netbsd drivers.  Only really works as a console,
modem support is not complete since I can't test it.
2003-01-01 19:49:30 +00:00
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Jens Schweikhardt
d64ada501a Fix typos, mostly s/ an / a / where appropriate and a few s/an/and/
Add FreeBSD Id tag where missing.
2002-12-30 21:18:15 +00:00
Jake Burkholder
07a312f6b6 Use memset instead of __builtin_memset. Apparently there's an inline
memset in libkern which causes problems; why that's there is beyond me.
2002-12-29 08:37:11 +00:00
Jake Burkholder
bc4ede2030 Use the meaningful mnemonics for ancillary state registers now that gas
is invoked properly to understand them.

	%asr19 -> %gsr
	%asr20 -> %set_softint
	%asr21 -> %clear_softint
2002-12-29 00:23:48 +00:00
Jake Burkholder
418a8ca992 Forgot this file in previous commit. 2002-12-28 23:58:18 +00:00
Jake Burkholder
af13cb9f11 - Moved storing %g1-%g5 in the trapframe until after interrupts are enabled.
- Restore %g6 and %g7 for kernel traps if we are returning to prom code.
  This allows complex traps (ones that call into C code) to be handled from
  the prom.
2002-12-28 23:57:52 +00:00
Jake Burkholder
63100290f3 Pass 0 in %o1 to tl0_trap for all non-interrupt traps. This will be used
to pass the pil when tl0_trap also handles interrupts.
2002-12-28 23:34:21 +00:00
Alan Cox
472c3b6f4f Hold the page queues lock around calls to vm_page_flag_clear() and
vm_page_wakeup().
2002-12-28 21:14:44 +00:00
Alan Cox
fca5d6baba Use VM_ALLOC_WIRED in pmap_pinit(). 2002-12-28 08:10:29 +00:00
Jake Burkholder
7b666b648f Define UMA_MD_SMALL_ALLOC so that uma_small_alloc and uma_small_free will
be used for zones that allocate objects of less 1 page.  The biggest advantage
of this is that all of a sudden the majority of kernel malloc-ed data doesn't
need kva allocated for it.  Besides microbenchmarks I haven't seen a measurable
performance improvement from doing this.
2002-12-27 19:31:26 +00:00
Jake Burkholder
66a6d547ec Teach /dev/kmem about direct mapped addresses.
Note that a better solution for how to make kernacc work for direct mapped
addresses is needed for all platforms that use them.
2002-12-27 19:18:04 +00:00
Jake Burkholder
9ff9f0fb80 Implement uma_small_alloc and uma_small_free. Not yet used. 2002-12-27 03:11:29 +00:00
Jake Burkholder
885f001d98 - Use direct mapped addresses for the message buffer, for the crash dump
mappings, and for pmap_map which is used to map the vm_page structures.
- Don't allocate kva space for any of the above.
2002-12-27 01:50:29 +00:00
Jake Burkholder
a106c6930a - Change the way the direct mapped region is implemented to be generally
useful for accessing more than 1 page of contiguous physical memory, and
  to use 4mb tlb entries instead of 8k.  This requires that the system only
  use the direct mapped addresses when they have the same virtual colour as
  all other mappings of the same page, instead of being able to choose the
  colour and cachability of the mapping.
- Adapt the physical page copying and zeroing functions to account for not
  being able to choose the colour or cachability of the direct mapped
  address.  This adds a lot more cases to handle.  Basically when a page has
  a different colour than its direct mapped address we have a choice between
  bypassing the data cache and using physical addresses directly, which
  requires a cache flush, or mapping it at the right colour, which requires
  a tlb flush.  For now we choose to map the page and do the tlb flush.

This will allows the direct mapped addresses to be used for more things
that don't require normal pmap handling, including mapping the vm_page
structures, the message buffer, temporary mappings for crash dumps, and will
provide greater benefit for implementing uma_small_alloc, due to the much
greater tlb coverage.
2002-12-23 23:39:57 +00:00
Jake Burkholder
dcedf26597 - Fix a bug where the faulting address for an mmu miss could sometimes be
clobbered due to some debug code.  This was harmless and just superfluous
  soft faults.
- Update some comments.
2002-12-23 02:18:45 +00:00
Jake Burkholder
950002bf92 - Rearrange pmap_bootstrap slightly to be more in dependency order.
- Put the kernel tsb before before the kernel load address, below
  VM_MIN_KERNEL_ADDRESS, instead of after the kernel where it consumes
  usable kva.  This is magic mapped so the virtual address is irrelevant,
  it just needs to be out of the way.
2002-12-22 23:01:14 +00:00
Jake Burkholder
c3c2862df4 - Add a spin lock to single thread cache invalidation and tlb flush ipis,
which allows ipis to be sent outside of Giant.
- Remove the ap boot mutex, which is unused.
2002-12-22 20:50:23 +00:00
Tim J. Robbins
b30a7779d4 MB_LEN_MAX is not MD, move it to the MI limits.h. 2002-12-22 06:38:45 +00:00
Jake Burkholder
b8eb0267c0 - Add a pmap pointer to struct md_page, and use this to find the pmap that
a mapping belongs to by setting it in the vm_page_t structure that backs
  the tsb page that the tte for a mapping is in.  This allows the pmap that
  a mapping belongs to to be found without keeping a pointer to it in the
  tte itself.
- Remove the pmap pointer from struct tte and use the space to make the
  tte pv lists doubly linked (TAILQs), like on other architectures.  This
  makes entering or removing a mapping O(1) instead of O(n) where n is the
  number of pmaps a page is mapped by (including kernel_pmap).
- Use atomic ops for setting and clearing bits in the ttes, now that they
  return the old value and can be easily used for this purpose.
- Use __builtin_memset for zeroing ttes instead of bzero, so that gcc will
  inline it (4 inline stores using %g0 instead of a function call).
- Initially set the virtual colour for all the vm_page_ts to be equal to their
  physical colour.  This will be more useful once uma_small_alloc is
  implemented, but basically pages with virtual colour equal to phsyical
  colour are easier to handle at the pmap level because they can be safely
  accessed through cachable direct virtual to physical mappings with that
  colour, without fear of causing illegal dcache aliases.

In total these changes give a minor performance improvement, about 1%
reduction in system time during buildworld.
2002-12-21 22:43:19 +00:00
Jake Burkholder
e43e24711b Make pmap_qenter and pmap_qremove look more like the other pmaps. 2002-12-21 10:44:30 +00:00
Jake Burkholder
fabf7ce58c Removed unused pmap_qenter_flags. 2002-12-21 10:04:14 +00:00
Jake Burkholder
fe1998ec51 Make the atomic arithmetic functions return the old value, since they're
all implemented with cas anyway.
2002-12-21 08:53:26 +00:00
Jake Burkholder
9830739b64 Add page queue locking around functions that call vm_page_flag_set. This
fixes a failed assertion early in boot on sparc64.

Reported by:	Roderick van Domburg <r.s.a.vandomburg@student.utwente.nl>
2002-12-20 21:47:21 +00:00
Julian Elischer
696058c3c5 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
Thomas Moestl
a9dace022e Exclude yet more interrupt mapping registers from the OBIO INO search,
namely the ones for the timers, error handling and power management.
The registers for the timers, power management and PCI bus b errors are
reserved on Sabres (US-IIi) and can lead to false matches there.
Since all of them are never used for devices on the bus, they can be omitted
safely.

Approved by:	re
2002-12-06 13:16:52 +00:00
Thomas Moestl
df9f4fead8 Remove a workaround for a binutils bug that was fixed in the recent
import, as it breaks the relocation kernel modules built with the new
binutils.
Note that this, together with the binutils import, marks a kernel module
flag day on sparc64: modules built with the old binutils will not work
with new kernels and vice versa. Mismatches will result in panics.

Approved by:	re
2002-12-02 18:56:30 +00:00
Thomas Moestl
f57d04ab1d Always initialize the UPA target module id in the interrupt mapping
register to the one of the processor doing the interrupt setup. This
is required since this field is preinitialized to 0, but there exist
machines which have no processor with a MID of 0 (e.g. e450s with 1 or 2
processors).

Add some more macros for handle the interrupt mapping registers, and
rename some existing ones for consistency.

Approved by:	re
2002-12-01 23:30:26 +00:00
Thomas Moestl
0aa267f6a7 1.) Do not look for PCI INOs in the FFB interrupt mapping registers; they
are nevers used for PCI interrupts, but can cause false matches since
    they are fully programmable.
2.) Skip the mapping registers for slot a2 and a3 on "psycho" bridges,
    since they are not present there. Again, this could cause false matches,
    which would result in the interrupt being delivered at most once.

Submitted by:	jake (2)
Approved by:	re
2002-12-01 23:21:15 +00:00
Thomas Moestl
bb4c2b1298 Remove some long-dead cruft in the interrupt handling code which was
never used in FreeBSD.

Approved by:	re
2002-12-01 23:13:59 +00:00
Thomas Moestl
ed2f312db5 Reverse the quirk table entry for swizzling on a missing interrupt map;
this is now done on all machines except for some known problematic ones.

Add an additional guard to make sure that the interrupt numbers are
in the correct range before swizzling. This should catch any remaining
models for which the swizzle is inappropriate.

Correct the swizzle calculation to account for the fact that the parent
interrupt numbers to be swizzled are 1-based.

Approved by:	re
2002-12-01 23:06:14 +00:00
Thomas Moestl
d4523ab223 Fix some comments describing psycho registers.
Approved by:	re
2002-12-01 23:00:41 +00:00
Thomas Moestl
fe4c53992a Do not panic when a dmamap is unloaded more then once, but just silently
ignore it. This is non-fatal on the other architectures, and some
drivers seem to do this.

Approved by:	re
2002-12-01 22:59:29 +00:00
Alan Cox
8f2ea21450 Add page queues locking to vunmapbuf().
Approved by:	re (blanket)
2002-11-24 21:13:34 +00:00
Maxime Henrion
b19d9defef 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
John Baldwin
69da428022 Fix compile in the case of SMP defined but DDB not defined.
Approved by:	re (implicit, DP2 doesn't build w/o this)
2002-11-20 14:09:33 +00:00
Jake Burkholder
42f850516c Run configure at SI_SUB_THIRD instead of SI_SUB_ANY like other
architectures.
2002-11-18 03:28:23 +00:00
Jake Burkholder
7446769caf MFi386 r1.369. Clear the PG_WRITEABLE flag in pmap_clear_write; return
immediately if its already clear.

Suggested by:	alc
2002-11-17 01:17:07 +00:00
Daniel Eischen
2be05b70c9 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
Thomas Moestl
222e92877c Don't register the powerfail interrupt as fast in the
non-DEBUGGER_ON_POWERFAIL case so that shutdown_nice() can be called
without problems.

Reported & tested by:	Gavin Atkinson <gavin@ury.york.ac.uk>
2002-11-14 11:29:16 +00:00
Alan Cox
eea85e9bb6 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
Alan Cox
6372d61e3e - 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
Thomas Moestl
f7f33d6984 Remove physmem from here, too, as it is defined in vm_init.c since
r1.35 (forgotten in my last commit due to a botched patch).

Pointy hat to:	tmm
2002-11-08 11:10:50 +00:00
Thomas Moestl
8c8a1169df Add two new workaround for firmware anomalies:
1. At least some Netra t1 models have PCI buses with no associated
   interrupt map, but obviously expect the PCI swizzle to be done with
   the interrupt number from the higher level as intpin. In this case,
   the mapping also needs to continue at parent bus nodes.
   To handle that, add a quirk table based on the "name" property of
   the root node to avoid breaking other boxen. This property is now
   retrieved and printed at boot.
2. On SPARCengine Ultra AX machines, interrupt numbers are not mapped
   at all, and full interrupt numbers (not just INOs) are given in
   the interrupt properties. This is more or less cosmetical; the
   PCI interrupt numbers would be wrong, but the psycho resource
   allocation method would pass the right numbers on anyway.

Tested by:	mux (1), Maxim Mazurok <maxim@km.ua> (2)
2002-11-07 16:07:46 +00:00
Maxime Henrion
f3595051aa s/HZ/Hz/ 2002-11-06 23:31:01 +00:00
Juli Mallett
751d91aabd 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
Jake Burkholder
1bc796d774 Don peril sensitive sun glasses and change the default system call vector
for sparc64 from trap #9 to trap #65.  This is one of the ABI "blessed"
system call vectors and is different from any other system that we might
want to emulate, making the emulation easier by reducing the number of
code paths that need to be shared.  Compatibility with old applications
is provided with COMPAT_FREEBSD4.
Add defines for a few special traps that we may need to implement for
compatibility with 32bit applications, and add comments on which vectors
are used for what in other systems, and which are available.
Pass magic flags to trap() for deprecated or unimplemented system call
vectors so they will deliver SIGSYS instead of SIGILL.

This piggy backs nicely with the recent sigaction(2) system call number
change, and provided the rules are followed for upgrading past it, this
change should not be noticed.
2002-10-27 17:22:43 +00:00
Jake Burkholder
8d9faed03e Allow deprecated or unimplemented system call vectors to deliver SIGSYS,
as suggested by the sparc v9 ABI.
2002-10-26 17:38:20 +00:00
Jake Burkholder
5b412c08c2 Remove an unused macro. 2002-10-26 17:36:37 +00:00
Peter Wemm
c69d7e2f4f Add COMPAT_FREEBSD4 for the transition. COMPAT_43 was already present. 2002-10-26 04:57:19 +00:00
Peter Wemm
23eeeff7be Split 4.x and 5.x signal handling so that we can keep 4.x signal
handling clean and functional as 5.x evolves.  This allows some of the
nasty bandaids in the 5.x codepaths to be unwound.

Encapsulate 4.x signal handling under COMPAT_FREEBSD4 (there is an
anti-foot-shooting measure in place, 5.x folks need this for a while) and
finish encapsulating the older stuff under COMPAT_43.  Since the ancient
stuff is required on alpha (longjmp(3) passes a 'struct osigcontext *'
to the current sigreturn(2), instead of the 'ucontext_t *' that sigreturn
is supposed to take), add a compile time check to prevent foot shooting
there too.  Add uniform COMPAT_43 stubs for ia64/sparc64/powerpc.

Tested on: i386, alpha, ia64.  Compiled on sparc64 (a few days ago).
Approved by: re
2002-10-25 19:10:58 +00:00
Thomas Moestl
db44ef5176 Initialize tick_MHz and related variables much earlier. After the last
revision of tick.c, this was done at SI_SUB_CLOCKS, which is too late
because tick_MHz is required for DELAY() to work.

Reviewed by:	jake
2002-10-25 17:42:14 +00:00
Thomas Moestl
736b63df0d Fix iommu_dvmamap_sync() to use the right address when flushing the
streaming cache. This bug could have the potential to cause data
corruption on systems with Psycho U2P bridges (Sabre bridges have no
streaming cache).
However, due to the usual driver architecture, it is believed that
corruption did occur only in rare cases (if at all).
2002-10-25 17:31:31 +00:00
Jake Burkholder
4d961d24e1 Greatly improve readability of trap() by using a table to convert between
trap types and signals to send.  Rearrange KASSERTs to better handle faults
early before curthread is setup, or in the case that it gets corrupted or
set to 0.
2002-10-25 16:00:47 +00:00
Jake Burkholder
81784fad7a Minor cleanups.
- use fields in sysent instead of PS_STRINGS
- set TSTATE_PRIV in frame0.tf_tstate for what its worth
2002-10-25 06:26:34 +00:00
Julian Elischer
1434d3fe6f Extract out KSE specific code from machine specific code
so that there is ony one copy of it. Fix that one copy
so that KSEs with no mailbox in a KSE program are not a cause
of page faults (this can legitmatly happen).

Submitted by:	(parts) davidxu
2002-10-24 23:09:48 +00:00
John Baldwin
b6ca678e32 We always need sys/pcpu.h now, not just for the SMP case.
Approved by:	jake
2002-10-23 20:18:33 +00:00
Poul-Henning Kamp
bcc4e90a1b Remove NO_GEOM from sparc64.
Reminded by:	jhb
2002-10-23 18:27:37 +00:00
Jake Burkholder
bb56f27799 - Expand struct trapframe to 256 bytes, make all fields fixed width and the
same size.  Add some fields that previously overlapped with something else
  or were missing.
- Make struct regs and struct mcontext (minus floating point) the same as
  struct trapframe so converting between them is easy (null).
- Add space for saving floating point state to struct mcontext.  This requires
  that it be 64 byte aligned.
- Add assertions that none of these structures change size, as they are part
  of the ABI.
- Remove some dead code in sendsig().
- Save and restore %gsr in struct trapframe.  Remember to restore %fsr.
- Add some comments to exception.S.
2002-10-22 18:03:15 +00:00
Jake Burkholder
069604aa96 Start tick at the correct time (cpu_init_clocks), instead of cpu_startup. 2002-10-22 07:10:15 +00:00
Maxime Henrion
822b4f22fb Set kernelname in sparc64_init() so that the kern.bootfile
sysctl works.  This stuff should probably be made MI.

Reviewed by:	jake
2002-10-20 21:55:35 +00:00
Thomas Moestl
10a3514a2e Use microuptime() instead of microtime() to bound the flush wait to
avoid hiccups in case of system time adjustment.
2002-10-20 19:41:21 +00:00
Thomas Moestl
e381d2455b Add kernel dump support, based on the ia64 version (which was committed
as sparc64/sparc64/dump_machdep.c a while back).
Other than ia64 (which uses ELF), sparc64 uses a homegrown format for
the dumps (headers are required because the physical address and size of
the tsb must be noted, and because physical memory may be discontiguous);
ELF would not offer any advantages here.

Reviewed by:	jake
2002-10-20 17:03:15 +00:00
Alan Cox
6f36eba2da - Lock page queue accesses in pmap_release(). 2002-10-20 07:19:25 +00:00
Marcel Moolenaar
1aeb23cdfa Add two hooks to signal module load and module unload to MD code.
The primary reason for this is to allow MD code to process machine
specific attributes, segments or sections in the ELF file and
update machine specific state accordingly. An immediate use of this
is in the ia64 port where unwind information is updated to allow
debugging and tracing in/across modules. Note that this commit
does not add the functionality to the ia64 port. See revision 1.9
of ia64/ia64/elf_machdep.c.

Validated on: alpha, i386, ia64
2002-10-19 19:16:03 +00:00
Robert Watson
c7063e5913 Permits UFS ACLs to be used with the GENERIC kernel. Due to recent
ACL configuration changes, this shouldn't result in different code paths
for file systems not explicitly configured for ACLs by the system
administrator.  For UFS1, administrators must still recompile their
kernel to add support for extended attributes; for UFS2, it's sufficient
to enable ACLs using tunefs or at mount-time (tunefs preferred for
reliability reasons).  UFS2, for a variety of reasons, including
performance and reliability, is the preferred file system for use with
ACLs.

Approved by:	re
2002-10-19 16:54:15 +00:00
Thomas Moestl
50d97927da Explicitely specify an alignment for struct pcb. While all regular pcb's
are positioned and aligned by md code, dumppcb is just a static
variable and requires this.
2002-10-19 15:54:34 +00:00
Thomas Moestl
61ef27e978 When entering the firmware mappings into the kernel tlb, clear all 'soft'
bits that might be set in the firmware tte data field, and set the soft
flag TD_EXEC to mark the page executable. Failing to do the latter would
cause fatal instruction faults in the prom in certain situations.

Reviewed by:	jake
2002-10-17 18:16:21 +00:00
Thomas Moestl
7c3563be7b Add "pci108e,8000" (psycho) and "pci108e,a000" (US-IIi sabre) to the list of
recognized compat properties. This should make the psycho driver attach
properly on SPARCengine Ultra AX machines.
Switch to a table-driven logic to recognize the ID's, since their number
is now large enough to justify this.

These changes are analogous to those made in NetBSD r.1.35, but
implemented a bit differently.
2002-10-16 17:37:50 +00:00
Thomas Moestl
69593fa999 Use a linked list to keep the psycho softcs instead of a statically
sized array.
While being there, deuglify the psycho pair detection loop which became
quite awkward in a previous code reorganization.
2002-10-16 17:03:36 +00:00
Peter Wemm
af3f249f3a The a.out md_coredump stuff isn't referenced anywhere anymore, and
hasn't been filled in for ages..  Nuked.
2002-10-15 00:02:50 +00:00
Mike Barcroft
4275e0d98d Remove the P1003_1B kernel option; it is no longer used. 2002-10-13 16:29:17 +00:00
Mike Barcroft
af103111f0 #ifdef _KERNEL not #if _KERNEL.
Pointy hat to:	mike
2002-10-13 12:33:38 +00:00
Mike Barcroft
7a77412855 Add standards visibility conditionals. Change any uses of sigset_t to
struct __sigset to avoid depending on objects from <sys/signal.h>.
2002-10-13 00:31:46 +00:00
Jake Burkholder
17e0698b5e Removed unused tl0_syscall. 2002-10-12 23:43:04 +00:00
Mike Barcroft
ddb056b7d4 Add conditionals to allow va_list to be defined in other headers. 2002-10-06 22:02:06 +00:00
Mike Barcroft
0b058e3cbd o Add conditionals to allow va_list to be defined in other headers.
o Standardize on _MACHINE_STDARG_H_ to allow multiple header includes.
o Restrict the definition of va_copy() to C99 environments.
2002-10-06 22:01:07 +00:00
Maxime Henrion
00a3bdc19a Add two extern's for adjkerntz and wall_cmos_clock, all other
archs have them there, alghough the variable are declared in
subr_clock.c.  These should probably be moved into some MI
place.

Approved by:	jake
2002-10-05 20:14:49 +00:00
Poul-Henning Kamp
3bd6561289 NB: This commit does *NOT* make GEOM the default in FreeBSD
NB: But it will enable it in all kernels not having options "NO_GEOM"

Put the GEOM related options into the intended order.

Add "options NO_GEOM" to all kernel configs apart from NOTES.

In some order of controlled fashion, the NO_GEOM options will be
removed, architecture by architecture in the coming days.

There are currently three known issues which may force people to
need the NO_GEOM option:

boot0cfg/fdisk:
        Tries to update the MBR while it is being used to control
        slices.  GEOM does not allow this as a direct operation.

SCSI floppy drives:
        Appearantly the scsi-da driver return "EBUSY" if no media
        is inserted.  This is wrong, it should return ENXIO.

PC98:
        It is unclear if GEOM correctly recognizes all variants of
        PC98 disklabels.  (Help Wanted!  I have neither docs nor HW)

These issues are all being worked.

Sponsored by:	DARPA & NAI Labs.
2002-10-05 16:35:33 +00:00
Mike Barcroft
e61d3b10d7 Fix namespace issues by using visibility conditionals from
<sys/cdefs.h>.
2002-10-05 05:47:56 +00:00
Mike Barcroft
085f8416a2 style(9) <machine/setjmp.h> headers so they look mostly the same. 2002-10-04 22:10:06 +00:00
Sam Leffler
14c17bd293 New bus_dma interfaces for use by crypto device drivers:
o bus_dmamap_load_mbuf
o bus_dmamap_load_uio

Test on i386.  Known to compile on alpha and sparc64, but not tested.
Otherwise untried.
2002-10-04 20:40:39 +00:00
Scott Long
316ec49abd Some kernel threads try to do significant work, and the default KSTACK_PAGES
doesn't give them enough stack to do much before blowing away the pcb.
This adds MI and MD code to allow the allocation of an alternate kstack
who's size can be speficied when calling kthread_create.  Passing the
value 0 prevents the alternate kstack from being created.  Note that the
ia64 MD code is missing for now, and PowerPC was only partially written
due to the pmap.c being incomplete there.
Though this patch does not modify anything to make use of the alternate
kstack, acpi and usb are good candidates.

Reviewed by:	jake, peter, jhb
2002-10-02 07:44:29 +00:00
Jake Burkholder
f164b09f13 Remove options NO_MODULES=true. Lots of modules build, but may not load
or work properly.  MAC modules work at least :).
2002-10-02 01:33:50 +00:00
Jake Burkholder
689cd8eeb8 Convert the bus space accessors from macros to inlines. This fixes some
problems with drivers that expect functions rather than function like
macros.

Reviewed by:	tmm
2002-10-01 16:32:09 +00:00
Jake Burkholder
eade9db908 Get rid of the TODO macro in the few places that still need work; either
comment it out or change to explicit panics.  It conflicts with things
like #if TODO in drivers.
2002-10-01 06:34:21 +00:00
Jake Burkholder
e557d82ace Add needed include of queue.h. 2002-10-01 02:50:26 +00:00
Jake Burkholder
c7f73b67b5 Use M_NOWAIT instead of M_WAITOK when allocating dmamaps; the allocations
functions may be called from a device strategy routine when sleeping is
bad.

Submitted by:	phk
Reviewed by:	tmm
2002-10-01 00:17:39 +00:00
Jake Burkholder
3297e8c990 Renamed intr_enqueue to intr_vector and intr_dequeue to intr_fast, to
better reflect how they are called.
2002-09-28 03:06:35 +00:00
Jake Burkholder
091c1e1acf Moved most interrupt related code to a new file, interrupt.S. 2002-09-28 01:56:24 +00:00
Jake Burkholder
169d513cb4 Add a workaround for what seems to be confusion between binutils and the
sparc v9 ABI.  The Elf_Rela records for local symbols appear to already
have the symbol's value added in to the addend field, even though the ABI
specifies we need to lookup the symbol and add its value too.  This breaks
text relocations in klds because the symbol's value is added twice, and
the resulting address points off into nowhere land, so for now just use
the addend.

Tested by:	rwatson
2002-09-27 23:12:53 +00:00
Jake Burkholder
7576c7c9c2 Removed debug code. 2002-09-25 01:13:46 +00:00
Jake Burkholder
338ca1a4ef Pass the function to call (trap or syscall) to tl0_trap and tl1_trap in %o2. 2002-09-25 00:26:04 +00:00
Jake Burkholder
9bf558ba57 Rearrange tl1_trap slightly, also save and restore the out registers so
that instruction emulation is possible in kernel mode.
2002-09-24 23:22:42 +00:00
Jake Burkholder
a3eed4ea5e Allocate stack space for the trapframe along with the normal register
frame in the save instruction, rather than doing a separate sub.
2002-09-24 22:19:20 +00:00
Jake Burkholder
e191c83fd4 Split user trap processing out into a separate routine so that traps which
never result in user traps don't have to plow through it.
2002-09-24 16:42:18 +00:00
Mike Barcroft
c0d4804d67 Be careful not to define GCC-specific optimizations in the non-GCC
case.
2002-09-23 04:32:17 +00:00
Jake Burkholder
95f5cd52bc Call trap directly for exceptional cases that need more processing on
return to usermode, rather than branching back to a label before the
original call.
2002-09-22 06:51:41 +00:00
Jake Burkholder
04474d7f0b Remove unneeded opt headers.
Noticed by:	benno
2002-09-22 01:34:33 +00:00
Benno Rice
be0e6bfc0b It's Apple GMAC, not HMAC.
Approved by:	jake (for sparc64)
2002-09-22 01:18:06 +00:00
Jake Burkholder
abc370fa85 Moved nfs_diskless setup code from autoconf.c to nfsclient/nfs_diskless.c
so that it is MI.  Allow nfs_mountroot to return an error if the nfs_diskless
struct is not valid, rather than panicing later on.  Call nfs_setup_diskless()
from nfs_mountroot if NFS_ROOT is defined, like bootpc_init().  Removed legacy
root mount support for sparc64, and enabled NFS_ROOT by default.
2002-09-22 00:59:02 +00:00
Maxime Henrion
f30120c393 Don't include opt_bus.h here, it breaks stuff trying to
include machine/bus.h.

Reviewed by:	tmm
2002-09-21 18:12:00 +00:00
John Baldwin
118ee2b4d5 Use correct function name in previous commit.
Submitted by:	jake
Pointy hat to:	jhb
2002-09-19 19:51:56 +00:00
John Baldwin
c79408a059 Implement db_print_backtrace() if DDB is compiled into the kernel. This
MD function is just a wrapper around db_stack_trace_cmd() that prints out
a backtrace of curthread.  Currently, this function is only implemented
on i386 and alpha (and the alpha version isn't quite tested yet, will do
that in a bit).  Other changes:

- For i386, fix a bug in the raw frame address case.  The eip we extract
  from the passed in frame address does not match the frame we received.
  Thus, instead of printing a bogus frame with the wrong eip, go ahead
  and advance frame down to the same frame as the eip we are using.
- For alpha, attempt to add a way of doing a raw trace for alpha.  Instead
  of passing a frame address in 'addr', pass in a pointer to a structure
  containing PC and KSP and use those to start the backtrace.  The alpha
  db_print_backtrace() uses asm to read in the current PC and KSP values
  into such a request.

Tested on:	i386
Requested by:	many
2002-09-19 18:46:29 +00:00
Mike Barcroft
86954511d2 Implement C99's va_copy() macro. 2002-09-18 07:33:16 +00:00
Jake Burkholder
9cf08dec12 Fix standard kse breakge of non-x86 platforms. sigh.
Pointy hat to:	kse
2002-09-17 16:21:48 +00:00
Peter Wemm
66422f5b7a Initiate deorbit burn for the i386-only a.out related support. Moves are
under way to move the remnants of the a.out toolchain to ports.  As the
comment in src/Makefile said, this stuff is deprecated and one should not
expect this to remain beyond 4.0-REL.  It has already lasted WAY beyond
that.

Notable exceptions:
gcc - I have not touched the a.out generation stuff there.
ldd/ldconfig - still have some code to interface with a.out rtld.
old as/ld/etc - I have not removed these yet, pending their move to ports.
some includes - necessary for ldd/ldconfig for now.

Tested on: i386 (extensively), alpha
2002-09-17 01:49:00 +00:00
Julian Elischer
4f0db5e08c Allocate KSEs and KSEGRPs separatly and remove them from the proc structure.
next step is to allow > 1 to be allocated per process. This would give
multi-processor threads. (when the rest of the infrastructure is
in place)

While doing this I noticed libkvm and sys/kern/kern_proc.c:fill_kinfo_proc
are diverging more than they should.. corrective action needed soon.
2002-09-15 23:52:25 +00:00
Thomas Moestl
ac9e4b5aea Use the definitions in machine/fsr.h instead of duplicating these magic
numbers here (the values need to correspond to the %fsr ones for some
libc functions to work right).
2002-09-14 18:00:44 +00:00
Thomas Moestl
351c67842f Clean up a bit, and add some more macros to access %fsr fields. 2002-09-14 17:58:54 +00:00
Juli Mallett
77c70ade18 Fill out two fields (si_pid, si_uid) in the siginfo structure handed back
to userland in the signal handler that were not being iflled out before, but
should and can be.

This part of sendsig could be slightly refactored to use an MI interface, or
ideally, *sendsig*() would have an API change to accept a siginfo_t, which
would be filled out by an MI function in the level above sendsig, and said MI
function would make a small call into MD code to fill out the MD parts (some
of which may be bogus, such as the si_addr stuff in some places).  This would
eventually make it possible for parts of the kernel sending signals to set up
a siginfo with meaningful information.

Reviewed by:	mux
MFC after:	2 weeks
2002-09-07 19:12:53 +00:00
Mike Barcroft
dd1b6791a8 Now that _BSD_CLK_TCK_ and _BSD_CLOCKS_PER_SEC_ are the same on all
architectures, move the definition directly into <time.h> and finish
the removal of <machine/ansi.h>.
2002-09-03 00:06:58 +00:00
Jake Burkholder
65be42f64d Remove an unneeded PROC_LOCK, which caused lock recursion panics.
Print a warning about old applications with no signal trampoline.

Reported by:	marius@alchemy.franken.de
2002-09-02 23:46:13 +00:00
Mike Barcroft
d0a18151c9 Align _BSD_CLK_TCK_ and _BSD_CLOCKS_PER_SEC_ with most other
platforms.  This introduces some binary incompatibilities for
dynamically linked programs which make use of clock(3) and times(3).

Approved by:	jake
2002-09-02 22:40:56 +00:00
Jake Burkholder
f36ba45234 Added fields for VM_MIN_ADDRESS, PS_STRINGS and stack protections to
sysentvec.  Initialized all fields of all sysentvecs, which will allow
them to be used instead of constants in more places.  Provided stack
fixup routines for emulations that previously used the default.
2002-09-01 21:41:24 +00:00
Peter Wemm
447b3772dc Change hw.physmem and hw.usermem to unsigned long like they used to be
in the original hardwired sysctl implementation.

The buf size calculator still overflows an integer on machines with large
KVA (eg: ia64) where the number of pages does not fit into an int.  Use
'long' there.

Change Maxmem and physmem and related variables to 'long', mostly for
completeness.  Machines are not likely to overflow 'int' pages in the
near term, but then again, 640K ought to be enough for anybody.  This
comes for free on 32 bit machines, so why not?
2002-08-30 04:04:37 +00:00
Jake Burkholder
bafbd49201 Renamed poorly named setregs to exec_setregs. Moved its prototype to
imgact.h with the other exec support functions.
2002-08-29 06:17:48 +00:00
Jake Burkholder
16d7d18097 Minor cleanup. 2002-08-29 02:39:39 +00:00
Jake Burkholder
0654f7911f Removed legacy signal trampoline. 2002-08-29 01:59:54 +00:00
Jake Burkholder
4fc642a3d9 Removed support for in-kernel signal code. 2002-08-29 01:55:24 +00:00
Alan Cox
6508a194aa o Retire pmap_pageable(). It's an advisory routine that none
of our platforms implements.
2002-08-25 04:20:05 +00:00
Mike Barcroft
bd8e0716d9 Move several MI types from <machine/_types.h> to <sys/_types.h>.
These types are unlikely to ever become very MD.  They include:
clockid_t, ct_rune_t, fflags_t, intrmask_t, mbstate_t, off_t, pid_t,
rune_t, socklen_t, timer_t, wchar_t, and wint_t.

While moving them, make a few adjustments (submitted by bde):
o __ct_rune_t needs to be precisely `int', not necessarily __int32_t,
  since the arg type of the ctype functions is int.
o __rune_t, __wchar_t and __wint_t inherit this via a typedef of
  __ct_rune_t.
o Some minor wording changes in the comment blocks for ct_rune_t and
  mbstate_t.

Submitted by:	bde (partially)
2002-08-23 16:49:06 +00:00
Jake Burkholder
0b0fe2194d Removed unneeded include of machine/types.h (which no longer exists). 2002-08-23 05:01:19 +00:00
Mike Barcroft
abbd890233 o Merge <machine/ansi.h> and <machine/types.h> into a new header
called <machine/_types.h>.
o <machine/ansi.h> will continue to live so it can define MD clock
  macros, which are only MD because of gratuitous differences between
  architectures.
o Change all headers to make use of this.  This mainly involves
  changing:
    #ifdef _BSD_FOO_T_
    typedef	_BSD_FOO_T_	foo_t;
    #undef _BSD_FOO_T_
    #endif
  to:
    #ifndef _FOO_T_DECLARED
    typedef	__foo_t	foo_t;
    #define	_FOO_T_DECLARED
    #endif

Concept by:	bde
Reviewed by:	jake, obrien
2002-08-21 16:20:02 +00:00
Peter Wemm
f453022cd9 remove unit counts from atkbdc, pckbd, sc 2002-08-20 00:10:22 +00:00
Maxime Henrion
44b4810fbe Typo fix.
Reviewed by:	tmm
2002-08-19 22:57:32 +00:00
Jake Burkholder
6d9acb27b1 Fix warning. These structs should probably be removed altogether. 2002-08-18 03:05:55 +00:00
Jake Burkholder
789573a63e Forgot this in last commit. 2002-08-18 02:33:52 +00:00
Jake Burkholder
8b53c815ec Add pmap support for user mappings of multiple page sizes (super pages).
This supports all hardware page sizes (8K, 64K, 512K, 4MB), but only 8k
pages are actually used as of yet.
2002-08-18 02:09:27 +00:00
Jake Burkholder
83d5cede4f Use symbolic constants instead of magic address constants. 2002-08-16 01:37:49 +00:00
Jake Burkholder
6856ac3294 Minor style. Removed unused declaration. 2002-08-16 01:35:00 +00:00
Jake Burkholder
51d5509a62 Removed unneeded pmap_initialized flag. 2002-08-16 01:33:03 +00:00
Jake Burkholder
6df1fae014 Demark sections of code that need special fault handling with labels.
Check if the trapped pc is inside of the demarked sections to implement
fault recovery for copyin etc, instead of pcb_onfault.  Handle recovery
from data access exceptions as well as page faults.

Inspired by:	bde's sys.dif
2002-08-16 00:57:37 +00:00
Jake Burkholder
0db0a7019c Fix some confusion regarding traps that use mmu globals but don't really
have any reason to; force alternat globals instead, which is what we want.
2002-08-15 05:46:42 +00:00
Jake Burkholder
b5d2ed3047 Store the number of itlb and dtlb entries separately; they may be different.
Find the prom node for the boot cpu earlier and store it in the per-cpu
area, so that cache_init can be called earlier.
2002-08-15 05:24:55 +00:00
Jake Burkholder
ed5434f0e3 Set kernel_vm_end. Panic if we try to grow the kernel. 2002-08-14 15:05:26 +00:00
Matt Jacob
9b63136347 Add support for the LSI-Logic Fusion/MP architecture.
This is an architecture that present a thing message passing interface
to the OS. You can query as to how many ports and what kind are attached
and enable them and so on.

A less grand view is that this is just another way to package SCSI (SPI or
FC) and FC-IP into a one-driver interface set.

This driver support the following hardware:

LSI FC909:	Single channel, 1Gbps, Fibre Channel (FC-SCSI only)
LSI FC929:	Dual Channel, 1-2Gbps, Fibre Channel (FC-SCSI only)
LSI 53c1020:	Single Channel, Ultra4 (320M) (Untested)
LSI 53c1030:	Dual Channel, Ultra4 (320M)

Currently it's in fair shape, but expect a lot of changes over the
next few weeks as it stabilizes.

Credits:

The driver is mostly from some folks from Jeff Roberson's company- I've
been slowly migrating it to broader support that I it came to me as.

The hardware used in developing support came from:

	FC909: LSI-Logic, Advansys (now Connetix)
	FC929: LSI-Logic
	53c1030: Antares Microsystems (they make a very fine board!)

MFC after:	3 weeks
2002-08-11 23:34:20 +00:00
Jake Burkholder
5aebb40291 Auto size available kernel virtual address space based on phsyical memory
size.  This avoids blowing out kva in kmeminit() on large memory machines
(4 gigs or more).

Reviewed by:	tmm
2002-08-10 22:14:16 +00:00
Alan Cox
10864380ab o Remove the setting and clearing of the PG_MAPPED flag. (This flag is
obsolete.)
2002-08-10 17:14:14 +00:00
Brooks Davis
05c872ad62 Make ppp(4) devices clonable and unloadable. 2002-08-09 15:30:48 +00:00
Alan Cox
33559722db o Introduce pmap_page_is_mapped(). Its purpose is to obsolete
the PG_MAPPED flag.
2002-08-07 18:03:00 +00:00
Alan Cox
7ffcf9ec77 o Don't set PG_MAPPED or PG_WRITEABLE when a page is mapped
using pmap_kenter() or pmap_qenter().
 o Use VM_ALLOC_WIRED in pmap_new_thread().
2002-08-05 00:04:18 +00:00
Jake Burkholder
ab1cee3d3d se -> sab. 2002-08-04 19:07:15 +00:00
Jake Burkholder
4fbe520926 Forgot to commit this.
Spotted by:	scottl
2002-08-01 21:39:54 +00:00
Marc Fonvieille
c0727dcbfe Fix the link to the Handbook 2002-08-01 17:21:18 +00:00
Jake Burkholder
256e0b2bbb Modify the cache handling code to assume 2 virtual colours, which is much
simpler and easier to get right.  Add comments.  Add more statistic
gathering on cacheable and uncacheable mappings.
2002-08-01 00:16:22 +00:00
Jake Burkholder
b519494ef1 Add some statistic gathering for cache flushes. 2002-07-31 23:39:50 +00:00
Jake Burkholder
055ca86c52 These file are no longer used (moved to userland and/or merged into
pmap.c).
2002-07-31 16:23:27 +00:00
Jake Burkholder
da1416c80c These were repo-copied to have a .S extension. 2002-07-31 15:56:15 +00:00
Jake Burkholder
61f869600d Add definitions for statistical and high-resolution profiling. The calling
conventions for _mcount and __cyg_profile_func_enter are different, so
statistical profiling kernels build and link but don't actually work.
IWBNI one could tell gcc to only generate calls to the former.

Define uintfptr_t properly for userland, but not for the kernel (I hope).
2002-07-30 06:14:34 +00:00
Jake Burkholder
c465faf9d4 The data cache on UltraSPARC III is not directly mapped, so don't assert
that.  This breaks assumptions made by some of the cache flushing code,
but UltraSPARC III has different methods for invalidating cache lines
anyway.
2002-07-30 05:48:33 +00:00
Jake Burkholder
4cfeb177e8 Panic if the data cache has too many virtual colors (more than 2). 2002-07-30 04:19:07 +00:00
Jake Burkholder
7968e6d2b2 Use _ALIGN_DATA and _ALIGN_TEXT. 2002-07-30 02:27:24 +00:00
Mike Barcroft
49545b3891 Create a new header <machine/_stdint.h> for storing MD parts of
<stdint.h>.  Previously, parts were defined in <machine/ansi.h> and
<machine/limits.h>.  This resulted in two problems:
  (1) Defining macros in <machine/ansi.h> gets in the way of that
      header only defining types.
  (2) Defining C99 limits in <machine/limits.h> adds pollution to
      <limits.h>.
2002-07-29 17:41:23 +00:00
Jake Burkholder
55328d51ba Add routines needed for high resolution profiling. 2002-07-29 00:45:13 +00:00
Jake Burkholder
fa4a902a13 Add a symbol for btext. 2002-07-29 00:42:00 +00:00
Jake Burkholder
7cde6cc16c Remove a stale comment. 2002-07-29 00:40:48 +00:00
Jake Burkholder
edfdadb6c3 Use _ALIGN_TEXT. Implement __cyg_profile_func_enter and
__cyg_profile_func_exit for GUPROF.
2002-07-29 00:39:46 +00:00
Jake Burkholder
d40e229819 Add _ALIGN_DATA and _ALIGN_TEXT macros. 2002-07-29 00:38:07 +00:00
Jake Burkholder
45b84327f9 Remove some stuff that snuck in last commit. 2002-07-29 00:37:05 +00:00
Jake Burkholder
b44ba1a844 Fix a bug introduced in previous commit. Due to the interaction of the
direct physical mappings with virtual page colour, we need to flush the
data cache when a page changes colour.  I missed one case which broke
pipes.
2002-07-28 19:15:34 +00:00
Mike Barcroft
7a415ec906 Revert the previous delta; uintfptr_t needs to be available to
userland for libc/gmon to compile, so the typedef in <machine/types.h>
isn't good enough.  This is really ugly since we end up with the
actual value which uintfptr_t is typedef'd from, in multiple places.
This is bug for bug compatible with the other FreeBSD architectures.

Noticed by:	sparc64 tinderbox
2002-07-28 15:59:51 +00:00
Jake Burkholder
839b2e106a Add declarations for btext and etext. 2002-07-28 01:01:14 +00:00
Jake Burkholder
7d8a5be3ea uintfptr_t has moved to machine/types.h. 2002-07-27 23:36:51 +00:00
Jake Burkholder
30bbe52432 Implement a direct mapped address region, like alpha and ia64. This
basically maps all of physical memory 1:1 to a range of virtual addresses
outside of normal kva.  The advantage of doing this instead of accessing
phsyical addresses directly is that memory accesses will go through the
data cache, and will participate in the normal cache coherency algorithm
for invalidating lines in our own and in other cpus' data caches.  So
we don't have to flush the cache manually or send IPIs to do so on other
cpus.  Also, since the mappings never change, we don't have to flush them
from the tlb manually.
This makes pmap_copy_page and pmap_zero_page MP safe, allowing the idle
zero proc to run outside of giant.

Inspired by:	ia64
2002-07-27 21:57:38 +00:00
Mike Barcroft
601016470b Catch up to rev 1.339 of src/sys/conf/options (PCI_ENABLE_IO_MODES is
now a sysctl and is enabled by default).
2002-07-27 15:28:35 +00:00
Jake Burkholder
dab4349561 Remove the tlb argument to tlb_page_demap (itlb or dtlb), in order to better
match the pmap_invalidate api.
2002-07-26 15:54:04 +00:00
Matt Jacob
1936600631 Set interrupt clear pointer for SBus slots to point to correct spot. 2002-07-25 20:14:59 +00:00
Peter Wemm
b618108fff de-count pci 2002-07-23 06:38:47 +00:00
Peter Wemm
fc147d7fe9 Add explicit unit count on 'device pci' for ahc/ahd 2002-07-21 23:07:31 +00:00
Peter Wemm
3ebc124838 Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable
handler in the kernel at the same time.  Also, allow for the
exec_new_vmspace() code to build a different sized vmspace depending on
the executable environment.  This is a big help for execing i386 binaries
on ia64.   The ELF exec code grows the ability to map partial pages when
there is a page size difference, eg: emulating 4K pages on 8K or 16K
hardware pages.

Flesh out the i386 emulation support for ia64.  At this point, the only
binary that I know of that fails is cvsup, because the cvsup runtime
tries to execute code in pages not marked executable.

Obtained from:  dfr (mostly, many tweaks from me).
2002-07-20 02:56:12 +00:00
John Baldwin
dde0429505 Various comment and minor style fixes. No actual content changes.
Inspired by:	bde
2002-07-16 18:20:17 +00:00
Thomas Moestl
f42d907165 When multiple IOMMUs are present in a system, use a single TSB for all
of them, and couple them by always performing all operations on all
present IOMMUs. This is required because with the current API there
is no way to determine on which bus a busdma operation is performed.

While being there, clean up the iommu code a bit.

This should be a step in the direction of allow some of larger machines
to work; tests have shown that there still seem to be problems left.
2002-07-16 18:17:03 +00:00
Thomas Moestl
1ab480b27b Add new UltraSPARC-III VIS II instructions. 2002-07-16 17:44:01 +00:00
Thomas Moestl
fe905bcb53 Add new LSU bits for UltraSPARC-III. 2002-07-16 16:24:03 +00:00
Thomas Moestl
63ebf186a7 Add ASI definitions of UltraSPARC-III (Cu) processors, and add some
previously missing US-I and II ones.
2002-07-16 16:22:25 +00:00
Alan Cox
9b973ca71f o Lock page queue accesses by vm_page_wire(). 2002-07-14 23:23:47 +00:00
Jake Burkholder
e32cbadc61 Try both upa-portid and portid properties when finding the module id of a
secondary cpu.  Its called portid on UltraSPARCIII machines.
2002-07-14 00:08:58 +00:00
Jake Burkholder
1ff72decea Remove debug code. 2002-07-14 00:01:16 +00:00
Alan Cox
1f54526952 o Complete the locking of page queue accesses by vm_page_unwire().
o Assert that the page queues lock is held in vm_page_unwire().
 o Make vm_page_lock_queues() and vm_page_unlock_queues() visible
   to kernel loadable modules.
2002-07-13 20:55:21 +00:00
Jonathan Mini
08b38412c8 Add additional cred_free_thread() calls that I had missed the first time.
Pointed out by:	jhb
2002-07-13 04:36:50 +00:00
Jake Burkholder
d73b19ef9d Use a fixed address for KERNBASE, so it doesn't change if the size of KVA
is increased.  Its confusing for all the kernel addresses to change, and
doesn't serve much purpose as far as conserving address space.
2002-07-13 03:29:10 +00:00
Jake Burkholder
5d5d3157fb Identify UltraSPARC-III and UltraSPARC-III+ cpus. 2002-07-13 03:23:29 +00:00
John Baldwin
33d7ad1abe Set the thread state of the newly chosen to run thread to TDS_RUNNING in
choosethread() in MI C code instead of doing it in in assembly in all the
various cpu_switch() functions.  This fixes problems on ia64 and sparc64.

Reviewed by:	julian, peter, benno
Tested on:	i386, alpha, sparc64
2002-07-12 18:34:22 +00:00
Thomas Moestl
a935ed4fae When sending cache flushing IPIs, don't try to IPI the triggering CPU
itself; this causes undefined behaviour on UltraSPARCs. In particular,
the interrupt packet data words will not necessarily be delivered
correctly, which would result in a crash.
This bug also caused the cache-flushing work to be done twice on the
triggering CPU (when it did not cause crashes).

Reviewed by:	jake
2002-07-12 16:26:49 +00:00
John Baldwin
78dee2638a thread_exit() requires PROC_LOCK to be held, so lock it. 2002-07-11 22:13:33 +00:00
Mike Barcroft
f889202ba4 Remove label_t and physadr, which seem to have never been used in
FreeBSD.

Submitted by:	bde
2002-07-10 15:47:59 +00:00
Mike Barcroft
ba5fe51088 Move __offsetof() macro from <machine/ansi.h> to <sys/cdefs.h>. It's
hardly MD, since all our platforms share the same macro.  It's not
really compiler dependent either, but this helps in reducing
<machine/ansi.h> to only type definitions.
2002-07-08 16:43:35 +00:00
Peter Wemm
a58b3a6878 Add a special page zero entry point intended to be called via the single
threaded VM pagezero kthread outside of Giant.  For some platforms, this
is really easy since it can just use the direct mapped region.  For others,
IPI sending is involved or there are other issues, so grab Giant when
needed.

We still have preemption issues to deal with, but Alan Cox has an
interesting suggestion on how to minimize the problem on x86.

Use Luigi's hack for preserving the (lack of) priority.

Turn the idle zeroing back on since it can now actually do something useful
outside of Giant in many cases.
2002-07-08 04:24:26 +00:00
Peter Wemm
a136efe9b6 Collect all the (now equivalent) pmap_new_proc/pmap_dispose_proc/
pmap_swapin_proc/pmap_swapout_proc functions from the MD pmap code
and use a single equivalent MI version.  There are other cleanups
needed still.

While here, use the UMA zone hooks to keep a cache of preinitialized
proc structures handy, just like the thread system does.  This eliminates
one dependency on 'struct proc' being persistent even after being freed.
There are some comments about things that can be factored out into
ctor/dtor functions if it is worth it.  For now they are mostly just
doing statistics to get a feel of how it is working.
2002-07-07 23:05:27 +00:00
Peter Wemm
61695d7ac8 Fix (s/proc/thread/) some typos in two panic messages. 2002-07-07 22:50:41 +00:00
Peter Wemm
7b719ec324 Back out proc part of last commit. UMA manages the thread cache only, and
we just have to deal with the kstack when told to.  We do not have a
UMA-managed cache for the proc struct and its associated upage yet.  So,
go back to the old lazy mechanism.  Note that if UMA destroys pages that
used to contain proc structures, we'll lose the corresponding upage
forever.  (zones never did this - once a page was allocated, it stayed
attached to the proc zone forever)
2002-07-05 01:27:35 +00:00
Peter Wemm
0b306e55c6 Take a shot at implementing changes from i386/pmap.c rev 1.328-1.331. 2002-07-05 00:38:43 +00:00
Mike Barcroft
a19d429398 Since printf(3) now supports the `j' conversion specifier, use that
when printing intmax_t and uintmax_t.

Forgotten by:	mike
Noticed by:	bde
2002-06-30 05:48:03 +00:00
Robert Watson
006f19e4f2 Remove ALT_BREAK_TO_DEBUGGER. This was inconsistent (both in form
and function) with existing configuration choices.  Arguably if
ALT_BREAK_TO_DEBUGGER was present, so should have been
BREAK_TO_DEBUGGER.  Regardless, it broke the option sort order in
these kernel configuration files.

Requested by:	bde
2002-06-30 04:12:21 +00:00
Julian Elischer
8540497c50 Fix reverse ordering of locks. add a comment about locks on some platforms.
Submitted by:	jhb@freebsd.org
2002-06-29 23:58:50 +00:00
Julian Elischer
e602ba25fd Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)

Reviewed by:	Almost everyone who counts
	(at various times, peter, jhb, matt, alfred, mini, bernd,
	and a cast of thousands)

	NOTE: this is still Beta code, and contains lots of debugging stuff.
	expect slight instability in signals..
2002-06-29 17:26:22 +00:00
Julian Elischer
44990b8cb8 Add files that are new for KSE. 2002-06-29 07:04:59 +00:00