Commit Graph

972 Commits

Author SHA1 Message Date
obrien
3965f1d79a Add an empty bus_space_unmap() like Alpha has. puc(4) uses it. 2003-02-23 19:54:16 +00:00
mux
5d17e75c9b Uncomment the xl(4) driver since it's now working properly
on sparc64.
2003-02-20 17:08:42 +00:00
jake
e3b25e1b75 Fix definite panic when releasing interrupt resources.
Spotted by:	tmm
2003-02-19 19:40:40 +00:00
jake
e06f00b3e7 Missed a missing M_WAITOK. 2003-02-19 17:29:07 +00:00
jake
23b5e8472a Use M_WAITOK. 2003-02-19 17:25:58 +00:00
jake
677f252b3c 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
imp
cf874b345d Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
jake
f0bd484381 Add central and fhc. 2003-02-18 09:38:51 +00:00
jake
00d231e63c 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
af55753a06 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
590a39e29b - 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
aa384c931f - 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
obrien
85bd6322e6 Fix the style of the SCHED_4BSD commit. 2003-02-13 22:24:44 +00:00
mike
b4e3f2f94a Implement fpclassify():
o Add a MD header private to libc called _fpmath.h; this header
  contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
  contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
  storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
  double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
  HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
  <math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
  <machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
  on the size of its argument.  __fpclassifyl() is never called on
  alpha because (sizeof(long double) == sizeof(double)), which is good
  since __fpclassifyl() can't deal with such a small `long double'.

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

PR:		23103
Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
		(significant portions)
Reviewed by:	bde, fenner (earlier versions)
2003-02-08 20:37:55 +00:00
harti
570156f24c 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
6b3763a173 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
joe
457d099669 Put replace spaces with tabs in keeping with the rest of the file. 2003-02-01 18:45:18 +00:00
julian
e8efa7328e 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
mjacob
affb5a1eb8 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
scottl
98eed43c20 Fix another mistake in the bus_dmamem_alloc_size() thing
Submitted by:	tmm
2003-01-29 20:36:08 +00:00
scottl
d9bd56452d Fix some more missing dt_ prefixes for dma tag fields. 2003-01-29 17:41:29 +00:00
scottl
cd45eb4961 Fix a typo in dt_maxsize from the last commit 2003-01-29 07:28:25 +00:00
scottl
27cbbd88a2 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
d966c96567 Enable device zs and device sab by default. 2003-01-27 05:05:52 +00:00
jake
28bda27f7b Fix standard kse breakage of non-x86 platforms.
Pointy hat to:	davidxu
2003-01-26 23:52:45 +00:00
davidxu
4b9b549ca2 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
8d3838b535 - 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
729d6018c5 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
980d4f44b4 Moved some (gas) macros up so they can be used in more places. 2003-01-24 23:47:46 +00:00
tmm
c5298f4e6c 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
tmm
c33c234943 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
bf8e8a6e8f 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
18309dfabe - 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
c1e42cc8bb 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
mdodd
6ceb6e6fac The abs() function isn't defined locally; include a header file that
defines it.
2003-01-16 08:53:03 +00:00
dillon
aba727244c Merge all the various copies of vm_fault_quick() into a single
portable copy.
2003-01-16 00:02:21 +00:00
dillon
bd6fdb8977 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
mdodd
4faf7cdff5 - 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
obrien
3f93aa0f12 Enable rl(4). It is now fully working using busdma. 2003-01-13 04:06:38 +00:00
jake
916cb45135 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
14cca48eed Implement bus_space_subregion. 2003-01-08 04:29:00 +00:00
tmm
64ef30fddd 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
tmm
ab84f2048c - 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
tmm
0575c37f18 Bump the IOMMU TSB size to 32kB, to match the default size on PCI
systems.
2003-01-06 19:48:31 +00:00
tmm
665e1e20a4 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
tmm
ba24b6317a Style and comment fixes, no functional changes. 2003-01-06 17:35:40 +00:00
tmm
0a1436cdc4 Look for the correct method in sparc64_dmamap_load_mbuf() and
sparc64_dmamap_load_uio().
2003-01-06 17:17:26 +00:00
tmm
6baab88147 Initialize the cache line size register of all PCI devices in the
initial setup pass.
2003-01-06 17:12:23 +00:00
tmm
9f25f73de6 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
tmm
10a0c5eb2d - 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
tmm
64efc269b1 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
07e8d84aea - 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
e9f9befcb1 Make imgact_elf32.c compile on sparc64.
Obtained from:	ia64
2003-01-05 03:48:55 +00:00
jake
7dd4094f1a 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
schweikh
d3367c5f5d Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
schweikh
86f7487fb6 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
62270dd689 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
9d2b79f22b 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
a31665cd07 Forgot this file in previous commit. 2002-12-28 23:58:18 +00:00
jake
eb4b24c167 - 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
f0efa00b3b 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
alc
f9a17edba9 Hold the page queues lock around calls to vm_page_flag_clear() and
vm_page_wakeup().
2002-12-28 21:14:44 +00:00
alc
73bbe5c126 Use VM_ALLOC_WIRED in pmap_pinit(). 2002-12-28 08:10:29 +00:00
jake
e5ac7a26a9 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
e50c4bb112 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
16cc24455b Implement uma_small_alloc and uma_small_free. Not yet used. 2002-12-27 03:11:29 +00:00
jake
073c2d289b - 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
aadaaa160e - 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
dff1689779 - 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
8355ab5ec5 - 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
02d8249471 - 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
tjr
0fa1ae4aca MB_LEN_MAX is not MD, move it to the MI limits.h. 2002-12-22 06:38:45 +00:00
jake
e78787e4ef - 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
74619d7495 Make pmap_qenter and pmap_qremove look more like the other pmaps. 2002-12-21 10:44:30 +00:00
jake
0f6e64a394 Removed unused pmap_qenter_flags. 2002-12-21 10:04:14 +00:00
jake
fba4477d95 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
d522abfb6d 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
9868d96f1f 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
tmm
3036bdcf9b 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
tmm
bcf5c2745d 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
tmm
0363c4c523 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
tmm
7ed7cdac58 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
tmm
d0bf4d5287 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
tmm
fd64c66705 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
tmm
efc50261de Fix some comments describing psycho registers.
Approved by:	re
2002-12-01 23:00:41 +00:00
tmm
f6615a23f3 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
alc
91507c53d5 Add page queues locking to vunmapbuf().
Approved by:	re (blanket)
2002-11-24 21:13:34 +00:00
mux
8169a213d9 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
jhb
b6a996d83d 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
74e796908f Run configure at SI_SUB_THIRD instead of SI_SUB_ANY like other
architectures.
2002-11-18 03:28:23 +00:00
jake
43c111e151 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
deischen
31ea801074 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
tmm
57a6c52018 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
alc
c02d224c79 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
alc
78766a7b7a - 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
tmm
6b29f7e140 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
tmm
e5e9ae1dc2 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
mux
ad9fbf676c s/HZ/Hz/ 2002-11-06 23:31:01 +00:00
jmallett
e1d1292908 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
8dce82a882 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
ce564f5edf 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
83d0eead07 Remove an unused macro. 2002-10-26 17:36:37 +00:00
peter
bbcb1cd71b Add COMPAT_FREEBSD4 for the transition. COMPAT_43 was already present. 2002-10-26 04:57:19 +00:00
peter
f7fa86b743 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
tmm
f2106ce588 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
tmm
6bff02396b 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
a065785f57 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
ab03b9e0eb 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
59e8ad5a4c 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
jhb
b5ac277f14 We always need sys/pcpu.h now, not just for the SMP case.
Approved by:	jake
2002-10-23 20:18:33 +00:00
phk
d2ef180a56 Remove NO_GEOM from sparc64.
Reminded by:	jhb
2002-10-23 18:27:37 +00:00
jake
9130753f7b - 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
1e5391da25 Start tick at the correct time (cpu_init_clocks), instead of cpu_startup. 2002-10-22 07:10:15 +00:00
mux
ae80af2637 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
tmm
f44b123543 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
tmm
5c94fe601c 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
alc
8e471edd49 - Lock page queue accesses in pmap_release(). 2002-10-20 07:19:25 +00:00
marcel
d35d608c07 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
rwatson
b98187d339 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
tmm
fe000c215a 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
tmm
af79946f12 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
tmm
b8616ce784 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
tmm
04ced36540 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
460da4d5cb 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
274818ff2c Remove the P1003_1B kernel option; it is no longer used. 2002-10-13 16:29:17 +00:00
mike
ca337b355f #ifdef _KERNEL not #if _KERNEL.
Pointy hat to:	mike
2002-10-13 12:33:38 +00:00
mike
0768501a2f 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
d4349d3d83 Removed unused tl0_syscall. 2002-10-12 23:43:04 +00:00
mike
9da14c0f1d Add conditionals to allow va_list to be defined in other headers. 2002-10-06 22:02:06 +00:00
mike
11edf68c64 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
mux
f466161c85 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
phk
951c3e53b2 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
029ec48b98 Fix namespace issues by using visibility conditionals from
<sys/cdefs.h>.
2002-10-05 05:47:56 +00:00
mike
c9d55a4efc style(9) <machine/setjmp.h> headers so they look mostly the same. 2002-10-04 22:10:06 +00:00
sam
1ba0866904 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
scottl
3a150bca9c 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
a0fcfdf113 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
b5dfcc0b31 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
85e12cff3b 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
4cc048934a Add needed include of queue.h. 2002-10-01 02:50:26 +00:00
jake
ce6cadf021 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
27927de410 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
eeddd0ac0f Moved most interrupt related code to a new file, interrupt.S. 2002-09-28 01:56:24 +00:00
jake
c03e93ab3a 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
f4ce091d17 Removed debug code. 2002-09-25 01:13:46 +00:00
jake
030f139fca 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
db1f953528 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
0cde982423 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
1c445b956e 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
fb4d714b00 Be careful not to define GCC-specific optimizations in the non-GCC
case.
2002-09-23 04:32:17 +00:00
jake
cd3515dad9 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
aea0aa68c7 Remove unneeded opt headers.
Noticed by:	benno
2002-09-22 01:34:33 +00:00
benno
61bc6ef550 It's Apple GMAC, not HMAC.
Approved by:	jake (for sparc64)
2002-09-22 01:18:06 +00:00
jake
be3bee9396 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
mux
0456bf6b89 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
jhb
848d0f0fb4 Use correct function name in previous commit.
Submitted by:	jake
Pointy hat to:	jhb
2002-09-19 19:51:56 +00:00
jhb
03dc7bc4a4 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
e35c51c74c Implement C99's va_copy() macro. 2002-09-18 07:33:16 +00:00
jake
dd967ac561 Fix standard kse breakge of non-x86 platforms. sigh.
Pointy hat to:	kse
2002-09-17 16:21:48 +00:00
peter
a51c9b6627 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
c7e9e7e892 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
tmm
69c3f107e2 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
tmm
a139e40971 Clean up a bit, and add some more macros to access %fsr fields. 2002-09-14 17:58:54 +00:00
jmallett
8fa852ab6c 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
8998ff49da 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
e4c39d59ff 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
2fe13c1c20 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
ce650f8c33 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
c3bdd669c3 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
821a548da7 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
538db5220d Minor cleanup. 2002-08-29 02:39:39 +00:00
jake
970672f630 Removed legacy signal trampoline. 2002-08-29 01:59:54 +00:00
jake
667e68fd2f Removed support for in-kernel signal code. 2002-08-29 01:55:24 +00:00
alc
d5f256dae2 o Retire pmap_pageable(). It's an advisory routine that none
of our platforms implements.
2002-08-25 04:20:05 +00:00
mike
d541375722 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
ce369afc71 Removed unneeded include of machine/types.h (which no longer exists). 2002-08-23 05:01:19 +00:00
mike
9e6f796b0d 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
238c22491c remove unit counts from atkbdc, pckbd, sc 2002-08-20 00:10:22 +00:00
mux
e1cb7effba Typo fix.
Reviewed by:	tmm
2002-08-19 22:57:32 +00:00
jake
cbad7da0ab Fix warning. These structs should probably be removed altogether. 2002-08-18 03:05:55 +00:00
jake
796b8d77a4 Forgot this in last commit. 2002-08-18 02:33:52 +00:00
jake
6ea3b2852a 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
3cfd695007 Use symbolic constants instead of magic address constants. 2002-08-16 01:37:49 +00:00
jake
aaaa8f8279 Minor style. Removed unused declaration. 2002-08-16 01:35:00 +00:00
jake
d554707634 Removed unneeded pmap_initialized flag. 2002-08-16 01:33:03 +00:00
jake
37f6204036 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
16ef416a94 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
07153efecf 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
2d7ee32053 Set kernel_vm_end. Panic if we try to grow the kernel. 2002-08-14 15:05:26 +00:00
mjacob
d8202a09a4 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
c154930f19 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
alc
18a9f2a8ff o Remove the setting and clearing of the PG_MAPPED flag. (This flag is
obsolete.)
2002-08-10 17:14:14 +00:00
brooks
a59a8c94a5 Make ppp(4) devices clonable and unloadable. 2002-08-09 15:30:48 +00:00
alc
40626b3576 o Introduce pmap_page_is_mapped(). Its purpose is to obsolete
the PG_MAPPED flag.
2002-08-07 18:03:00 +00:00
alc
3b63a2bd2b 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
3b16da9c19 se -> sab. 2002-08-04 19:07:15 +00:00
jake
c82e5b1791 Forgot to commit this.
Spotted by:	scottl
2002-08-01 21:39:54 +00:00
blackend
9c8ad2f838 Fix the link to the Handbook 2002-08-01 17:21:18 +00:00
jake
4f9b822dcc 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
8e116e9548 Add some statistic gathering for cache flushes. 2002-07-31 23:39:50 +00:00
jake
14cd8a4891 These file are no longer used (moved to userland and/or merged into
pmap.c).
2002-07-31 16:23:27 +00:00
jake
9ee8091c36 These were repo-copied to have a .S extension. 2002-07-31 15:56:15 +00:00
jake
eb814d118c 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
5b1899e180 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
d8a2beb660 Panic if the data cache has too many virtual colors (more than 2). 2002-07-30 04:19:07 +00:00
jake
27afff05e2 Use _ALIGN_DATA and _ALIGN_TEXT. 2002-07-30 02:27:24 +00:00
mike
9f0ddc464e 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
082a6afc1c Add routines needed for high resolution profiling. 2002-07-29 00:45:13 +00:00
jake
9511cbbc05 Add a symbol for btext. 2002-07-29 00:42:00 +00:00
jake
4461489ac6 Remove a stale comment. 2002-07-29 00:40:48 +00:00
jake
3ae3385f62 Use _ALIGN_TEXT. Implement __cyg_profile_func_enter and
__cyg_profile_func_exit for GUPROF.
2002-07-29 00:39:46 +00:00
jake
16fa260a5e Add _ALIGN_DATA and _ALIGN_TEXT macros. 2002-07-29 00:38:07 +00:00
jake
fea62cdb6b Remove some stuff that snuck in last commit. 2002-07-29 00:37:05 +00:00
jake
5bd1876975 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
99cfb0b9e9 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
d468b2beab Add declarations for btext and etext. 2002-07-28 01:01:14 +00:00
jake
f1f241d7d0 uintfptr_t has moved to machine/types.h. 2002-07-27 23:36:51 +00:00
jake
d1139f54e7 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
1dd324f9f2 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
dc1ed5c34f 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
mjacob
4553d5e202 Set interrupt clear pointer for SBus slots to point to correct spot. 2002-07-25 20:14:59 +00:00
peter
0d8fe1f3c6 de-count pci 2002-07-23 06:38:47 +00:00
peter
0e1289a90e Add explicit unit count on 'device pci' for ahc/ahd 2002-07-21 23:07:31 +00:00
peter
cc7b2e4248 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
jhb
0dbee33a27 Various comment and minor style fixes. No actual content changes.
Inspired by:	bde
2002-07-16 18:20:17 +00:00
tmm
339b19ff87 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
tmm
bda13f0cba Add new UltraSPARC-III VIS II instructions. 2002-07-16 17:44:01 +00:00
tmm
1fb9947f02 Add new LSU bits for UltraSPARC-III. 2002-07-16 16:24:03 +00:00
tmm
0d2b3aeaaa 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
alc
52c89de021 o Lock page queue accesses by vm_page_wire(). 2002-07-14 23:23:47 +00:00
jake
fd7d3c2e28 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
04b64987c3 Remove debug code. 2002-07-14 00:01:16 +00:00
alc
828e129a10 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
mini
a02f691cf3 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
eefbe93dbb 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
5d43846206 Identify UltraSPARC-III and UltraSPARC-III+ cpus. 2002-07-13 03:23:29 +00:00
jhb
91bb8201ee 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
tmm
b08811be07 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
jhb
30b152864c thread_exit() requires PROC_LOCK to be held, so lock it. 2002-07-11 22:13:33 +00:00
mike
7ffb7525e5 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
ebfda4c0dd 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
62e40d1277 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
b73c441dad 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
2727877234 Fix (s/proc/thread/) some typos in two panic messages. 2002-07-07 22:50:41 +00:00
peter
48d11f9343 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
5d120cf80b Take a shot at implementing changes from i386/pmap.c rev 1.328-1.331. 2002-07-05 00:38:43 +00:00
mike
beba9fcf0e 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
rwatson
3e3677e3e3 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
b858fa511c 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
aa2dc0a5d9 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