Commit Graph

871 Commits

Author SHA1 Message Date
Maxime Henrion
659be1116f Uncomment the xl(4) driver since it's now working properly
on sparc64.
2003-02-20 17:08:42 +00:00
Jake Burkholder
367a0516d8 Fix definite panic when releasing interrupt resources.
Spotted by:	tmm
2003-02-19 19:40:40 +00:00
Jake Burkholder
b41be772ad Missed a missing M_WAITOK. 2003-02-19 17:29:07 +00:00
Jake Burkholder
a5902eaf0c Use M_WAITOK. 2003-02-19 17:25:58 +00:00
Jake Burkholder
63ec9d57c9 Implement interrupt resource allocation and setup. Set the interrupt
group number properly based on the board id.  Perform dummy reads of
registers after writing to flush the hardware write buffers.

This gets the soon to be committed zs attachment working.
2003-02-19 08:23:38 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Jake Burkholder
cce6f96a05 Add central and fhc. 2003-02-18 09:38:51 +00:00
Jake Burkholder
012d9539bf Add drivers for the central and fhc busses found in enterprise class
UltraSPARCs, and an eeprom attachment for fhc, which allows the date
to be set properly on these machines.  Central is a wierd bus which
seems to only ever have 1 fhc attached to it.   FHC (FireHose Controller)
is another wierd bus with various things on it depending where its attached.
The fhc attached to central has eeprom and zs, and the fhcs which attach
directly to nexus have simm-status, environment and other nodes, none of
which I'll probably ever have documentation for.

Thanks to Ade Lovett for providing access to an 8 cpu e4500.
2003-02-18 09:01:01 +00:00
Julian Elischer
4a338afd7a 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
Jeff Roberson
5215b1872f - 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 Roberson
e4625663c9 - 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
David E. O'Brien
36dc5b9427 Fix the style of the SCHED_4BSD commit. 2003-02-13 22:24:44 +00:00
Mike Barcroft
8cf5ed5125 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
Hartmut Brandt
e557905435 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 Burkholder
238dd3209a 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
Josef Karthauser
c0c9e71f9a Put replace spaces with tabs in keeping with the rest of the file. 2003-02-01 18:45:18 +00:00
Julian Elischer
6f8132a867 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
Matt Jacob
13f177f7ad SCSI Changers, SCSI Tapes, and SES devices work just about as well as
anything else in sparc64.
2003-01-31 19:03:32 +00:00
Scott Long
288a05f9ee Fix another mistake in the bus_dmamem_alloc_size() thing
Submitted by:	tmm
2003-01-29 20:36:08 +00:00
Scott Long
c07f24ca0c Fix some more missing dt_ prefixes for dma tag fields. 2003-01-29 17:41:29 +00:00
Scott Long
2cbd991d46 Fix a typo in dt_maxsize from the last commit 2003-01-29 07:28:25 +00:00
Scott Long
5193a34646 Implement bus_dmamem_alloc_size() and bus_dmamem_free_size() as
counterparts to bus_dmamem_alloc() and bus_dmamem_free().  This allows
the caller to specify the size of the allocation instead of it defaulting
to the max_size field of the busdma tag.

This is intended to aid in converting drivers to busdma.  Lots of
hardware cannot understand scatter/gather lists, which forces the
driver to copy the i/o buffers to a single contiguous region
before sending it to the hardware.  Without these new methods, this
would require a new busdma tag for each operation, or a complex
internal allocator/cache for each driver.

Allocations greater than PAGE_SIZE are rounded up to the next
PAGE_SIZE by contigmalloc(), so this is not suitable for multiple
static allocations that would be better served by a single
fixed-length subdivided allocation.

Reviewed by:	jake (sparc64)
2003-01-29 07:25:27 +00:00
Jake Burkholder
52e59d41d8 Enable device zs and device sab by default. 2003-01-27 05:05:52 +00:00
Jake Burkholder
e3c5d56ff4 Fix standard kse breakage of non-x86 platforms.
Pointy hat to:	davidxu
2003-01-26 23:52:45 +00:00
David Xu
0dbb100b9b 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 Roberson
c3384118a1 - 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
Jake Burkholder
21ecbe78a2 Merge some code paths back together so that we only instantiate 1 copy of
the user tlb fault handlers.
2003-01-26 03:38:30 +00:00
Jake Burkholder
4a3381caae Moved some (gas) macros up so they can be used in more places. 2003-01-24 23:47:46 +00:00
Thomas Moestl
a00f3148b6 Fixes for a number of problems in the IOMMU code:
1.) Fix an off-by-one in the DVMA space handling, which would make it
    possible to allocate one page beyond the end of the DVMA area.
    This page was aliased to the first page. Apparently, this bug was
    responsible for the trashed nvram/eeprom some people were reporting,
    in conjunction with a number of unfortunate coincidences.
2.) Fix broken boundary and and lowaddr calculations.
3.) Fix a memory leak on an error path.
4.) Update a outdated comment to reflect the introduction of IOMMU_MAX_PRE,
    make the usage of IOMMU_MAX_PRE more consistent and KASSERT that the
    preallocation size is not 0.
5.) Fix a case where an error return was lost.
6.) When signalling an error to the caller by invoking the callback, do
    not use a segment pointer of NULL for compatability with existing
    drivers.

Also, increase the maximum segment number to 64; it is rather arbitrary,
with the exception of the of the stack space consumed by the segment
array.

Special thanks go to Harti Brandt <brandt@fokus.fraunhofer.de> for
spotting 4 and 5, and testing many iterations of patches.

Pointy hats to:	tmm
2003-01-21 18:22:26 +00:00
Thomas Moestl
d2ccea1588 Fix iommu_dvmamap_sync(): it was still operating as if the BUS_DMASYNC_*
constants where flag bits (as in NetBSD), although they are consecutively
numbered in FreeBSD. This would cause unnecessary flushing in the
BUS_DMASYNC_POSTWRITE case, but was otherwise mostly harmless.
2003-01-21 17:08:22 +00:00
Alfred Perlstein
44956c9863 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 Roberson
04de47b0d3 - 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 Burkholder
7251b4bf93 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
Matthew N. Dodd
060daf4376 The abs() function isn't defined locally; include a header file that
defines it.
2003-01-16 08:53:03 +00:00
Matthew Dillon
e3669cee72 Merge all the various copies of vm_fault_quick() into a single
portable copy.
2003-01-16 00:02:21 +00:00
Matthew Dillon
f597900329 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
Matthew N. Dodd
6dc61b5ae5 - GC a few more hand-rolled 'abs' macros.
- GC a few hand-rolled min()/max() macros while I'm here.
2003-01-15 02:15:57 +00:00
David E. O'Brien
497c45b6e1 Enable rl(4). It is now fully working using busdma. 2003-01-13 04:06:38 +00:00
Jake Burkholder
4ee5222bac Don't allow user process to set an invalid window state through sigreturn.
Spotted by:	tmm
2003-01-10 00:04:56 +00:00
Jake Burkholder
88a8ca8569 Implement bus_space_subregion. 2003-01-08 04:29:00 +00:00
Thomas Moestl
fe461235a2 Change the iommu code to be able to handle more than one DVMA area per
map. Use this new feature to implement iommu_dvmamap_load_mbuf() and
iommu_dvmamap_load_uio() functions in terms of a new helper function,
iommu_dvmamap_load_buffer(). Reimplement the iommu_dvmamap_load()
to use it, too.
This requires some changes to the map format; in addition to that,
remove unused or redundant members.
Add SBus and Psycho wrappers for the new functions, and make them
available through the respective DMA tags.
2003-01-06 21:59:54 +00:00
Thomas Moestl
702f83a807 - remove the unused parent DMA tag argument from
_nexus_dmamap_load_buffer()
- implement nexus_dmamap_load() in terms of _nexus_dmamap_load_buffer().
  Note that this is untested, as this code is not currently used (but
  might be later for UPA devices).
- move BUS_DMAMAP_NSEGS to bus_private.h
- disable the ecache flushing in nexus_dmamap_sync(); it should not be
  needed, although the docs are not entirely clear on that.
2003-01-06 20:54:07 +00:00
Thomas Moestl
0415010cbd Bump the IOMMU TSB size to 32kB, to match the default size on PCI
systems.
2003-01-06 19:48:31 +00:00
Thomas Moestl
08707f05a0 Prefix the members of struct bus_space_tag and struct bus_dma_tag with
a uniqifier. No functional changes.
2003-01-06 19:43:10 +00:00
Thomas Moestl
7f349cb889 Style and comment fixes, no functional changes. 2003-01-06 17:35:40 +00:00
Thomas Moestl
6cf280f100 Look for the correct method in sparc64_dmamap_load_mbuf() and
sparc64_dmamap_load_uio().
2003-01-06 17:17:26 +00:00
Thomas Moestl
8286df3339 Initialize the cache line size register of all PCI devices in the
initial setup pass.
2003-01-06 17:12:23 +00:00
Thomas Moestl
5b398f68ee Some cleanup:
- move some constants into iommureg.h
- correct some comments
- use KASSERT() in one place instead of rolling our own
- take a sanity check out of #ifdef DIAGNOSTIC
- fix a syntax error in normally #ifdef'ed out debug code
2003-01-06 17:10:07 +00:00
Thomas Moestl
3a68043d39 - remove some outdated comments
- tweak the announce message a bit
- remove '\n's from a few panic() calls
- don't use the DVMA base adress the firmware reports; instead, figure
  it out from the appropriate register on Sabres and let the IOMMU code
  choose it on Psychos. This also makes the IOMMU TSB size freely
  selectable.
2003-01-06 16:51:06 +00:00
Thomas Moestl
7bee014426 1.) fix a copy-and-paste-o in a panic() message
2.) pass the requesting child device (instead of the bus one) up when
    handling interrupt resources
3.) remeber to mark the resource list entry as unused in
    sbus_release_resource().

Reported by:	scottl (3)
2003-01-06 16:36:05 +00:00
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