Commit Graph

910 Commits

Author SHA1 Message Date
jake
359cfe8501 - Don't allow tf_wstate to be set in set_regs.
- Clear FPRS_FEF in set_fpregs so the new registers will be reloaded.
2003-04-01 04:29:03 +00:00
jake
8e217044b1 Implement cpu_set_upcall. 2003-04-01 04:19:29 +00:00
jake
06240b6c81 - Rename pcb_fpstate to pcb_ufp (user floating point), and change it to
a simple array of 64 ints.
- Use a critical section when saving floating point state in cpu_fork
  instead of sched_lock.
2003-04-01 04:02:45 +00:00
jake
7bada9c1ac Rename pcb_fp to pcb_sp, so as to not be confused with floating point
state.
2003-04-01 03:05:46 +00:00
jake
48ae97193a Implement casuptr. 2003-04-01 02:37:04 +00:00
jeff
420a77ecd5 - Define a new md function 'casuptr'. This atomically compares and sets
a pointer that is in user space.  It will be used as the basic primitive
   for a kernel supported user space lock implementation.
 - Implement this function in x86's support.s
 - Provide stubs that return -1 in all other architectures.  Implementations
   will follow along shortly.

Reviewed by:	jake
2003-04-01 00:18:55 +00:00
jeff
46e6ba39f1 - Move p->p_sigmask to td->td_sigmask. Signal masks will be per thread with
a follow on commit to kern_sig.c
 - signotify() now operates on a thread since unmasked pending signals are
   stored in the thread.
 - PS_NEEDSIGCHK moves to TDF_NEEDSIGCHK.
2003-03-31 22:49:17 +00:00
jeff
4a3718fb25 - Change trapsignal() to accept a thread and not a proc.
- Change all consumers to pass in a thread.

Right now this does not cause any functional changes but it will be important
later when signals can be delivered to specific threads.
2003-03-31 22:02:38 +00:00
jake
28fd4ae8c5 - Allow the physical memory size that will be actually used by the kernel to
be overridden by setting hw.physmem.
- Fix a vm_map_find arg, we don't want to find space.
- Add tracing and statistics for off colored pages.
- Detect "stupid" pmap_kenters (same virtual and physical as existing
  mapping), and do nothing in that case.
2003-03-31 19:56:55 +00:00
jake
fe6633a01d Handle the fictitious pages created by the device pager. For fictitious
pages which represent actual physical memory we must strip off the fake
page in order to allow illegal aliases to be detected.  Otherwise we map
uncacheable in the virtual and physical caches and set the side effect bit,
as is required for mapping device memory.

This fixes gstat on sparc64, which wants to mmap kernel memory through a
character device.
2003-03-27 02:16:31 +00:00
jake
723028725c Set the cache line size for subordinate pci bridges as well as for their
child devices.  This fixes dma timeouts for devices behind the bridge.

Reported by:	simokawa
Tested by:	simokawa
2003-03-27 02:01:59 +00:00
jake
783ae539c3 - Add vm_paddr_t, a physical address type. This is required for systems
where physical addresses larger than virtual addresses, such as i386s
  with PAE.
- Use this to represent physical addresses in the MI vm system and in the
  i386 pmap code.  This also changes the paddr parameter to d_mmap_t.
- Fix printf formats to handle physical addresses >4G in the i386 memory
  detection code, and due to kvtop returning vm_paddr_t instead of u_long.

Note that this is a name change only; vm_paddr_t is still the same as
vm_offset_t on all currently supported platforms.

Sponsored by:	DARPA, Network Associates Laboratories
Discussed with:	re, phk (cdevsw change)
2003-03-25 00:07:06 +00:00
ru
3e93151335 Remove bitrot associated with `maxusers'.
Submitted by:	bde
2003-03-22 14:18:23 +00:00
jhb
b8b062b09b Use td->td_ucred instead of td->td_proc->p_ucred. 2003-03-20 21:17:40 +00:00
mux
0977536812 Use atomic operations to increment and decrement the refcount
in busdma tags.  There are currently no tags shared accross
different drivers so this isn't needed at the moment, but it
will be required when we'll have a proper newbus method to get
the parent busdma tag.
2003-03-20 19:45:26 +00:00
jake
c318ac02eb - Remove unused cache flushing routines. These will not necessary work
on future UltraSPARC cpus for which the data cache is not direct mapped.
- Move UltraSPARC I and II (spitfire, blackbird, sapphire, sabre) specific
  functions to spitfire.c, and add cheetah.c for UltraSPARC III specific
  functions.  Initially just cache flushing, but there are a few other
  functions that will need to move here.
- Add an ipi handler for data cache flushing on UltraSPARC III.
- Use function pointers to select the right cache flushing functions based
  on cpu_impl.

With this it is possible to boot single user from an mfs root on UltraSPARC
III systems, including spinning up secondary processors.  There is currently
no support for the host to pci bridge, and no documentation for it is
publically available.

Thanks to Oleg Derevenetz for providing access to a system with UltraSPARC
III+ cpus.
2003-03-19 06:55:37 +00:00
jake
a47fe0ac3a - Set cpu_impl early in sparc64_init so that we can use it to detect
UltraSPARC III and higher cpus and do needed setup.
- Disable the "system tick" interrupt for UltraSPARC III.  This avoids
  an interrupt storm on startup since we're not prepared for these at
  all.  This feature has questionable use anyway.
- Clear tick on startup and then leave it alone.
2003-03-19 05:51:21 +00:00
jake
6564ae8101 Remove a workaround for mysterious junk appearing in the tlb of secondary
cpus.  It turned out to be a bug in the loader.
2003-03-19 05:05:08 +00:00
jake
106626faa2 Implement db_print_backtrace. This may need to flush out the windows
as well.
2003-03-19 02:58:53 +00:00
jake
6c826bc368 Remove unused fields. 2003-03-18 08:15:24 +00:00
jake
bf1f3783a0 Clean up /dev/mem now that pmap handles illegal aliases properly. Don't
allow access to device memory through /dev/mem, or try to make modifying
kernel text through /dev/mem safe (it is not).
2003-03-17 18:53:02 +00:00
jake
0d1bd6d896 Ensure that kstack0 has physical colour equal to virtual colour, so that
illegal aliases will not be created in the data cache if its accessed
through another such mapping.
2003-03-17 03:18:56 +00:00
jake
c1838df603 Made the prototypes for pmap_kenter and pmap_kremove MD. These functions
are machine dependent because they are not required to update the tlb when
mappings are added or removed, and doing so is machine dependent.
In addition, an implementation may require that pages mapped with pmap_kenter
have a backing vm_page_t, which is not necessarily true of all physical
pages, and so may choose to pass the vm_page_t to pmap_kenter instead of the
physical address in order to make this requirement clear.
2003-03-16 04:16:03 +00:00
jake
bfdf0845f2 Implement is_physical_memory. Accessing memory which doesn't exist causes
traps that are difficult to recover from, so we check against the memory
map returned by the prom.
2003-03-15 23:59:00 +00:00
jake
6fa8cc270b lock.h must be included before mutex.h. 2003-03-14 07:19:29 +00:00
mux
48ca93061d Oops, add missing includes. Pass me the pointy hat.
Reported by:	jake
2003-03-14 00:04:37 +00:00
mux
15b2d31e35 Grab Giant around calls to contigmalloc() and contigfree() so
that drivers converted to be MP safe don't have to deal with it.
2003-03-13 17:18:48 +00:00
jhb
e4bcd25517 Replace calls to WITNESS_SLEEP() and witness_list() with equivalent calls
to WITNESS_WARN().
2003-03-04 21:03:05 +00:00
phk
0ae911eb0e Gigacommit to improve device-driver source compatibility between
branches:

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

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

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
julian
3fc9836d46 Change the process flags P_KSES to be P_THREADED.
This is just a cosmetic change but I've been meaning to do it for about a year.
2003-02-27 02:05:19 +00:00
davidxu
ef32e2b209 cat KSE > /dev/null 2003-02-27 01:11:58 +00:00
ru
c51d104769 Implemented "nooption" and "nomakeoption" config(8) tokens.
Fixed memory leak in the "nodevice" option implementation.

Use these instead of sed(1) in MD NOTES.

Use a single makefile (sys/conf/makeLINT.mk) to generate
LINT for all architectures.  (Previous versions missed
the LINT dependency on Makefile, and i386 version also
missed the dependency on ${NOTES}.)

Fixed bugs in the previous NOTES conversion using the
"nodevice" token and sed(1):

- i386 LINT lost "device pst".

- pc98 LINT lost SC_*, MAXCONS and KBD_DISABLE_KEYMAP_LOAD
  options, and got needless DPT_* options.

- Added nooptions PPC_DEBUG, PPC_PROBE_CHIPSET, KBD_INSTALL_CDEV
  to sparc64 LINT so that it has a chance to config(8).

This basically returns us to where we were before.
2003-02-26 23:36:59 +00:00
mux
b0f2f954b2 Unbreak the IOMMU code.
Pointy hat to:	mux
Reviewed by:	tmm
2003-02-26 15:02:55 +00:00
mux
186c547c81 Correctly set BUS_SPACE_MAXSIZE in all the busdma backends.
It was bogusly set to 64 * 1024 or 128 * 1024 because it was
bogusly reused in the BUS_DMAMAP_NSEGS definition.
2003-02-26 02:16:06 +00:00
obrien
d42e7b5cee Move most everything back to a MI NOTES, and use "nodevice" in MD NOTES
Where needed.  Use 'sed' for now in place of "nooptions".  Add a sparc64
MD NOTES.

Reviewed by:	arch@
2003-02-25 20:59:23 +00:00
mux
541937cf73 Cleanup of the d_mmap_t interface.
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

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

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00
obrien
1625e4bdfe Make the 'a' parameter of bus_space_write_multi_stream_*() a const pointer. 2003-02-24 00:11:15 +00:00
obrien
d0bb7e7afb The rest of our platforms make bus_space_write_multi_stream_2's 'a' a
const pointer.
2003-02-23 20:42:32 +00:00
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