Commit Graph

1069 Commits

Author SHA1 Message Date
Maxime Henrion
9f1b87f106 Instead of calling ia32_pause() conditionally on __i386__ or __amd64__
being defined, define and use a new MD macro, cpu_spinwait().  It only
expands to something on i386 and amd64, so the compiled code should be
identical.

Name of the macro found by:	jhb
Reviewed by:	jhb
2004-08-03 18:44:27 +00:00
Peter Grehan
e796443d47 Remove race condition between reading of MSR, setting md_savecrit,
and setting MSR. This was most evident with the idle proc running
with interrupts disabled and causing a lockup. Switch over to the
i386 style which does things in the right order.

debug assisted by:  gallatin, and the invaluable KTR option.
2004-08-03 04:14:55 +00:00
Suleiman Souhlal
09e7619917 Remove 'device mem' from GENERIC, which markm@ mistakingly added.
We don't have mem/kmem yet.

Approved by:	grehan (mentor)
2004-08-02 11:08:48 +00:00
Peter Grehan
016927054b Kernel traps were not being passed to trap_fatal in some
circumstances.

Spotted by:  gallatin
2004-08-02 02:37:29 +00:00
Mark Murray
8ab2f5ecc5 Break out the MI part of the /dev/[k]mem and /dev/io drivers into
their own directory and module, leaving the MD parts in the MD
area (the MD parts _are_ part of the modules). /dev/mem and /dev/io
are now loadable modules, thus taking us one step further towards
a kernel created entirely out of modules. Of course, there is nothing
preventing the kernel from having these statically compiled.
2004-08-01 11:40:54 +00:00
Alan Cox
9bb0e06861 - Push down the acquisition and release of Giant into pmap_protect() on
those architectures without pmap locking.
 - Eliminate the acquisition and release of Giant from vm_map_protect().

(Translation: mprotect(2) runs to completion without touching Giant on
alpha, amd64, i386 and ia64.)
2004-07-30 20:38:30 +00:00
Suleiman Souhlal
a6e340aabe Add comment explaining struct reg and struct fpreg must match the trapframe.
Approved by:	grehan (mentor)
2004-07-29 13:39:27 +00:00
Suleiman Souhlal
009a0e433b Implement MD parts of ptrace.
Approved by:	grehan (mentor)
2004-07-29 13:34:50 +00:00
Robert Watson
1a8cfbc450 Pass a thread argument into cpu_critical_{enter,exit}() rather than
dereference curthread.  It is called only from critical_{enter,exit}(),
which already dereferences curthread.  This doesn't seem to affect SMP
performance in my benchmarks, but improves MySQL transaction throughput
by about 1% on UP on my Xeon.

Head nodding:	jhb, bmilekic
2004-07-27 16:41:01 +00:00
Peter Grehan
e60a36f564 Properly implement kdb_cpu_{set|clear}_singlestep to allow DDB to
continue from breakpoints.
2004-07-27 07:06:20 +00:00
Peter Grehan
74fa1336d6 Make sure icache is sync'd whenever memory is touched. It may
be more optimal to override the BKPT_WRITE macro, but DDB performance
isn't really a goal at this stage...
2004-07-27 07:04:58 +00:00
Peter Grehan
1f1b01c0a5 Save DAR/DSISR in DDB regsave area when stack overflow detected. It's
hard to work out where the problem was without these.
2004-07-27 03:46:34 +00:00
Peter Grehan
5dd954f3de Improve boot-time debugging with DDB by extracting the ksym start/end
values from the loader.
2004-07-27 03:41:34 +00:00
Alan Cox
ab50a26230 Implement the protection check required by the pmap_extract_and_hold()
specification.

Reviewed and tested by:	grehan@
2004-07-26 18:10:10 +00:00
Andrew Gallatin
d593f6eda9 Let ddb know powerpc is big endian so as to make ddb output
human readable.

Obtained from: sparc64/include/db_machdep.h
2004-07-23 14:45:15 +00:00
Peter Grehan
2a1c4385c3 Detect kernel stack excursion into guard pages. Drop into KDB
with a wired stack if this is found.

Mostly obtained from:  NetBSD
2004-07-23 05:33:24 +00:00
Peter Grehan
a76b77653c Bring KDB stack size into line with thread stack size (4 pages). 2004-07-23 05:31:14 +00:00
Peter Grehan
c06a377abc Allow DSI exceptions to invoke DDB. 2004-07-23 05:27:17 +00:00
Peter Grehan
163fac2c58 The ADDR16 relocations were assuming that non-local symbols had an
addend of 0. This isn't correct, and was quite easy to break by
referring to the address of an element within a structure.

 However, fixing this exposed the fact that symbol lookups for
local variables were returning the base of the section they
were contained in. This case is detected by comparing the return
value from elf_lookup() to the relocbase+addend value: if it is
lesser, but greater than relocbase, then relocbase+addend is
taken to be the authoritative value.

bug reported by:  gallatin
2004-07-23 00:46:05 +00:00
Peter Grehan
bddfaa895c Update the callframe structure to leave space for the frame pointer
and saved link register as per the ABI call sequence. Update code
that uses this (fork_trampoline etc) to use the correct genassym'd
offsets.

 This fixes the 'invalid LR' message when backtracing kernel
threads in DDB.
2004-07-22 01:28:51 +00:00
Andrew Gallatin
82ab2f48a4 Make this compile: add sys/module.h and KDBify. 2004-07-22 00:54:01 +00:00
Marcel Moolenaar
fd32d93b97 Unify db_stack_trace_cmd(). All it did was look up the thread given
the thread ID and call db_trace_thread().
Since arm has all the logic in db_stack_trace_cmd(), rename the
new DB_COMMAND function to db_stack_trace to avoid conflicts on
arm.
While here, have db_stack_trace parse its own arguments so that
we can use a more natural radix for IDs. If the ID is not a thread
ID, or more precisely when no thread exists with the ID, try if
there's a process with that ID and return the first thread in it.
This makes it easier to print stack traces from the ps output.

requested by: rwatson@
tested on: amd64, i386, ia64
2004-07-21 05:07:09 +00:00
Peter Grehan
8c18dab95e elf_cpu_load_file no longer has an __unused variable. Also, don't
bother syncing the icache for the special case of the kernel (id == 1),
since the loader has already done this.

__unused use reported by:  gallatin
2004-07-20 02:40:57 +00:00
Peter Grehan
1c4ba0be13 Properly obey PPC context synchronization rules when modifying
the address translation bits of the MSR. This fixes the boot-time
panic reported by Drew Gallatin.
2004-07-20 02:22:36 +00:00
Andrew Gallatin
df11547f5d Fix printing of long doubles to match the size that
gcc is using.  This fixes devstat consumers (like vmstat, iostat,
systat) so they don't print crazy zillion digit numbers for
disk transfers and bandwidth.

According to gcc, long doubles are 64-bits, rather than 128 bits
like the SVR4 ABI spec wants them to be..  Note that MacOSX also treats
long doubles as 64-bits, and not 128 bits, so we are in good company.

Reviewed by: das
Approved by: grehan
2004-07-19 23:56:07 +00:00
David Schultz
479f8d2214 Make FLT_ROUNDS correctly reflect the dynamic rounding mode. 2004-07-19 08:17:25 +00:00
Peter Grehan
3327cde241 Use the version field to identify the partial context used by
KSE process-scope threads.
2004-07-19 07:21:46 +00:00
Peter Grehan
8653f72f6e Empty GENERIC.hints file needed by make release.
Noticed by:  Suleiman Souhlal <refugee@segfaulted.com>
2004-07-19 02:08:22 +00:00
Maxim Konovalov
aa355a2679 In -CURRENT pseudo devices are not statically assigned at compile time,
remove a stale comment.

PR:		kern/62285
2004-07-18 09:03:12 +00:00
Peter Grehan
b7ef1c19e4 Resurrect kld support. Support ADDR16_HA/LA relocations, and sync
the icache on module load. Requires "-mlongcall" support, in gcc >= 3.3
but needs a bugfix to support gcc arith builtins.
2004-07-17 07:26:32 +00:00
Alan Cox
3d2e54c317 Push down the acquisition and release of the page queues lock into
pmap_protect() and pmap_remove().  In general, they require the lock in
order to modify a page's pv list or flags.  In some cases, however,
pmap_protect() can avoid acquiring the lock.
2004-07-15 18:00:43 +00:00
David Xu
53dbf30349 Add ptrace_clear_single_step(), alpha already has it for years, the function
will be used by ptrace to clear a thread's single step state.
2004-07-13 07:22:56 +00:00
Peter Grehan
441e42eaf4 Rename low-level code ddb -> db. Use KDB instead of DDB.
Fix bug in setup of stack frame where 8 bytes wasn't being
saved for the callee's frame pointer and saved LR.
2004-07-12 22:32:08 +00:00
Peter Grehan
b188ee2269 Bring into KDB new order. 2004-07-12 22:26:20 +00:00
Peter Grehan
20d21fe9ef - DDB -> KDB, with kdb routines
- ddb -> db for low-level trapcode
- implement makectx. I think it only matters that the stack is setup
  correctly.
- bring over ddb_trap_glue and rename to db_trap_glue
2004-07-12 22:25:09 +00:00
Peter Grehan
def828503c No need for ddb option. Never a need for ipkdb option. 2004-07-12 22:22:53 +00:00
Peter Grehan
e3c25f5d33 Catch up with gratuitous ddb -> db renaming 2004-07-12 22:22:09 +00:00
Peter Grehan
d8570880e8 Bring into line with KDB. Bring in NetBSD updates for backtrace routine,
although it really needs a decent re-work.
2004-07-12 22:21:34 +00:00
Peter Grehan
a136236e5c Remove unused NetBSD code. Bring mem r/w routines into here in line
with sparc64, although keep the size deref checks: they are useful
when accessing PCI space where some devices may not implement byte
access.
2004-07-12 22:20:01 +00:00
Peter Grehan
4539337da0 Gratuitous namechange to avoid low-level association with ddb. 2004-07-12 22:18:02 +00:00
Peter Grehan
abdc8ff1bc Add prototype for KDB's makectx routine 2004-07-12 22:17:20 +00:00
Peter Grehan
5f40873a1f Remove old NetBSD-derived unused code and stuff that is now obsolete
due to KDB.
2004-07-12 22:16:50 +00:00
Peter Grehan
9917bd81ed DDB -> KDB, and rename low-level trap handler to avoid name conflict. 2004-07-12 22:16:04 +00:00
Peter Grehan
f4ec5aece7 kdb.h for PowerPC. Stubs for now. 2004-07-12 22:15:03 +00:00
Peter Grehan
24c1c57156 Add new KDB option, and also drop in long-held fxp/dc eth drivers. 2004-07-12 22:14:21 +00:00
Alan Cox
eba90ac75f pmap_remove_pages() must not remove wired mappings. Since
pmap_remove_pages() is an optimization, its implementation is optional.

Discussed with:	grehan
2004-07-12 04:40:26 +00:00
Peter Grehan
077a0fb8b6 - correctly set the return value for the copyin/out fault buffer to 1
so setfault would return correctly when a page fault was invalid
  (e.g. a syscall with a bad parameter).

  This caused an endless DSI loop, seen when running sendmail which
  does a setlogin() call with a NULL pointer.

- introduce KTR_SYSC tracing. expose the syscallnames[] array to
  make the tracing more readable.
2004-07-09 11:00:41 +00:00
Peter Grehan
5d64cf91fb G4 requires isync after 256Mb ibat/dbat update, G3 requires
isync after each bat update. Otherwise, pmap_bootstrap causes
an ISI exception. A fall-out of loader BAT removal.
2004-07-08 12:47:36 +00:00
Peter Grehan
d0540ed535 - trailing white-space cleanup
- add call to thread_user_enter for P_SA processes before
  trap processing ala all other arches
2004-07-06 11:46:56 +00:00
David E. O'Brien
42f74b8ddf In the spirit of amd64/include/stdarg.h rev 1.6; add __va_copy
(but keep it conditional on __ISO_C_VISIBLE >= 1999.

Why?  Our out /usr/src/contrib assumes it, and more than a few ports have
an autoconf that looks for __va_copy because it is available on glibc.
It is critical that we use it on PowerPC.  It generally isn't a problem
for i386 and its ilk because those platforms can get away with cheating
the C standard, using a plain assignment.
2004-07-06 07:47:09 +00:00
Peter Grehan
45329b8ee6 Add 32-bit framebuffer support. Tested on PearPC at lo-res, too painful
to watch at hi-res.
2004-07-06 03:22:05 +00:00
Alan Cox
56b093883a Correct pmap_extract()'s return type. It should be vm_paddr_t, not
vm_offset_t.
2004-07-05 23:08:27 +00:00
John Baldwin
0c0b25ae91 Implement preemption of kernel threads natively in the scheduler rather
than as one-off hacks in various other parts of the kernel:
- Add a function maybe_preempt() that is called from sched_add() to
  determine if a thread about to be added to a run queue should be
  preempted to directly.  If it is not safe to preempt or if the new
  thread does not have a high enough priority, then the function returns
  false and sched_add() adds the thread to the run queue.  If the thread
  should be preempted to but the current thread is in a nested critical
  section, then the flag TDF_OWEPREEMPT is set and the thread is added
  to the run queue.  Otherwise, mi_switch() is called immediately and the
  thread is never added to the run queue since it is switch to directly.
  When exiting an outermost critical section, if TDF_OWEPREEMPT is set,
  then clear it and call mi_switch() to perform the deferred preemption.
- Remove explicit preemption from ithread_schedule() as calling
  setrunqueue() now does all the correct work.  This also removes the
  do_switch argument from ithread_schedule().
- Do not use the manual preemption code in mtx_unlock if the architecture
  supports native preemption.
- Don't call mi_switch() in a loop during shutdown to give ithreads a
  chance to run if the architecture supports native preemption since
  the ithreads will just preempt DELAY().
- Don't call mi_switch() from the page zeroing idle thread for
  architectures that support native preemption as it is unnecessary.
- Native preemption is enabled on the same archs that supported ithread
  preemption, namely alpha, i386, and amd64.

This change should largely be a NOP for the default case as committed
except that we will do fewer context switches in a few cases and will
avoid the run queues completely when preempting.

Approved by:	scottl (with his re@ hat)
2004-07-02 20:21:44 +00:00
Peter Grehan
6cc1cdf47b Modify loop test when cycling through phys_avail array. It's possible
for an OpenFirmware implementation to have a single memory region
(hello PearPC).
2004-07-01 08:01:49 +00:00
Peter Grehan
57dc54db86 Catch up with __RMAN_RESOURCE_VISIBLE change 2004-07-01 07:59:08 +00:00
Peter Grehan
6c62609340 Move soft structs back to C files to avoid exposing rman fields
to clients now that it's protected with __RMAN_RESOURCE_VISIBLE
2004-07-01 07:56:56 +00:00
Peter Grehan
40cdee9dab Catchup to now-required <sys/module.h> for PowerPC 2004-06-25 13:42:48 +00:00
Poul-Henning Kamp
89c9c53da0 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
Tim J. Robbins
cc05397ffc Remove checks for curthread == NULL - it can't happen. 2004-06-03 10:22:47 +00:00
Tim J. Robbins
fa2a4d0595 Move TDF_DEADLKTREAT into td_pflags (and rename it accordingly) to avoid
having to acquire sched_lock when manipulating it in lockmgr(), uiomove(),
and uiomove_fromphys().

Reviewed by:	jhb
2004-06-03 01:47:37 +00:00
Thomas Moestl
65e29c4822 Retire cpu_sched_exit(); it is not used any more. 2004-05-26 12:09:39 +00:00
Bruce Evans
b2321e7cdb Moved most of the "MI" definitions and declarations from <machine/profile.h>
to <sys/gmon.h>.  Cleaned them up a little by not attempting to ifdef
for incomplete and out of date support for GUPROF in userland, as in
the sparc64 version.
2004-05-19 15:41:26 +00:00
Peter Grehan
e6bd8ae1e9 trap_pfault() shouldn't be acquiring Giant. Found to blow up
with MUTEX_PROFILING.

Submitted by:  Suleiman Souhlal <refugee@segfaulted.com>
2004-05-19 06:05:42 +00:00
Stefan Farfeleder
b1aa0ba527 <stdint.h> should define WINT_M{AX,IN} independent from whether WCHAR_MIN is
defined.  Otherwise first including <wchar.h> and then <stdint.h> leads to no
WINT_M{AX,IN} at all.

PR:		64956
Approved by:	das (mentor)
2004-05-18 16:04:57 +00:00
Peter Wemm
e8855d4f97 Make a small revision to the api between the elf linker core and the
elf_reloc() backends for two reasons.  First, to support the possibility
of there being two elf linkers in the kernel (eg: amd64), and second, to
pass the relocbase explicitly (for relocating .o format kld files).
2004-05-16 20:00:28 +00:00
Marcel Moolenaar
d1d9feac7c Add option GEOM_GPT. This brings the ability to have a large number of
partitions on a single disk.
2004-05-02 20:40:19 +00:00
David E. O'Brien
4e744b5e7f Spell Ethernet correctly. 2004-05-02 18:57:29 +00:00
David Schultz
be3930682a Hide FLT_EVAL_METHOD and DECIMAL_DIG in pre-C99 compilation
environments.

PR:		63935
Submitted by:	Stefan Farfeleder <stefan@fafoe.narf.at>
2004-04-25 02:36:29 +00:00
Peter Grehan
50069af197 - Catch up with recent ATA changes.
- Remove trailing space in ata_macio.c
2004-04-23 23:39:53 +00:00
Peter Grehan
7f89270bad Include <machine/pte.h> since it has been removed from <machine/param.h>. 2004-04-21 22:59:33 +00:00
Peter Grehan
5c9c7fc2f7 <machine/pte.h> has no business being here. Finally exposed by F77 build
failure.
2004-04-21 22:58:39 +00:00
Alan Cox
377a50503d MFamd64
Simplify the sf_buf implementation.  In short, make it a veneer
 over the direct virtual-to-physical mapping.
2004-04-18 08:10:04 +00:00
Alan Cox
1f51408ade Remove avail_end. It is not used. 2004-04-11 06:02:24 +00:00
Warner Losh
2fcbca0d85 Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 05:00:01 +00:00
Alan Cox
c8607538c8 Remove avail_start on those platforms that no longer use it. (Only amd64
does anything with it beyond simple initialization.)
2004-04-05 04:08:00 +00:00
Alan Cox
bdb93eb248 Remove unused arguments from pmap_init(). 2004-04-05 00:37:50 +00:00
Alan Cox
121230a40d In some cases, sf_buf_alloc() should sleep with pri PCATCH; in others, it
should not.  Add a new parameter so that the caller can specify which is
the case.

Reported by:	dillon
2004-04-03 09:16:27 +00:00
Peter Grehan
6611d6692f Match the specific MPC106 host bridge PCI ID rather than all
generic host bridges: this avoids a race with the UniNorth
generic match.
2004-04-01 07:34:36 +00:00
Peter Grehan
2e428c5487 The end argument to bus_alloc_resource() should have been ~0 and
not ~1, but the call has been switched over to bus_alloc_resource_any()
which has the same effect.

Submitted by: Suleiman Souhlal <refugee@segfaulted.com>
2004-03-31 07:40:46 +00:00
Benno Rice
0c7e9074e6 Replace td2 with td on the assumption that this was a typo. This should at
least unbreak the build.

Pointy hat to: peter
Not tested either by: benno
2004-03-30 13:57:34 +00:00
Peter Wemm
5c89deaefc Finish tidying up a couple of leftovers from the KSTACK_PAGES stuff. Some
files still #included the opt_ file.  powerpc hadn't been updated yet.
2004-03-29 19:38:05 +00:00
Alan Cox
010b69bae2 Add an implementation of uiomove_fromphys() for PowerPC. This
implementation uses the direct virtual-to-physical mapping.

Discussed with:	grehan
2004-03-23 18:26:03 +00:00
Marcel Moolenaar
a36bdc0606 Introduce the cpumask_t type. The purpose of the type is to create a
level of abstraction for any and all CPU mask and CPU bitmap variables
so that platforms have the ability to break free from the hard limit
of 32 CPUs, simply because we don't have more bits in an u_int. Note
that the type is not supposed to solve massive parallelism, where
the number of CPUs can be larger than the width of the widest integral
type. As such, cpumask_t is not supposed to be a compound type. If
such would be necessary in the future, we can deal with the issues
then and there. For now, it can be assumed that the type is integral
and unsigned.

With this commit, all MD definitions start off as u_int. This allows
us to phase-in cpumask_t at our leasure without breaking anything.
Once cpumask_t is used consistently, platforms can switch to wider
(or smaller) types if such would be beneficial (or not; whatever :-)

Compile-tested on: i386
2004-03-20 20:41:40 +00:00
Nate Lawson
5f96beb9e0 Convert callers to the new bus_alloc_resource_any(9) API.
Submitted by:	Mark Santcroos <marks@ripe.net>
Reviewed by:	imp, dfr, bde
2004-03-17 17:50:55 +00:00
Alan Cox
90ecfebd82 Refactor the existing machine-dependent sf_buf_free() into a machine-
dependent function by the same name and a machine-independent function,
sf_buf_mext().  Aside from the virtue of making more of the code machine-
independent, this change also makes the interface more logical.  Before,
sf_buf_free() did more than simply undo an sf_buf_alloc(); it also
unwired and if necessary freed the page.  That is now the purpose of
sf_buf_mext().  Thus, sf_buf_alloc() and sf_buf_free() can now be used
as a general-purpose emphemeral map cache.
2004-03-16 19:04:28 +00:00
Scott Long
11d905ecd8 Now that contigfree() does not require Giant, don't grab it in busdma. 2004-03-13 15:42:59 +00:00
Alan Cox
fcffa790e9 Retire pmap_pinit2(). Alpha was the last platform that used it. However,
ever since alpha/alpha/pmap.c revision 1.81 introduced the list allpmaps,
there has been no reason for having this function on Alpha.  Briefly,
when pmap_growkernel() relied upon the list of all processes to find and
update the various pmaps to reflect a growth in the kernel's valid
address space, pmap_init2() served to avoid a race between pmap
initialization and pmap_growkernel().  Specifically, pmap_pinit2() was
responsible for initializing the kernel portions of the pmap and
pmap_pinit2() was called after the process structure contained a pointer
to the new pmap for use by pmap_growkernel().  Thus, an update to the
kernel's address space might be applied to the new pmap unnecessarily,
but an update would never be lost.
2004-03-07 21:06:48 +00:00
Lukas Ertl
1bcf24ee9d Fix syntax errors and wrong function prototypes in several MD header
files when using non-GNUC compilers.

PR:             kern/58515
Submitted by:   Stefan Farfeleder <stefan@fafoe.narf.at>
Approved by:    grog (mentor), obrien
2004-03-05 09:19:59 +00:00
Peter Grehan
4daf20b2f1 Increase kernel VA from 256Mb to 512Mb by shifting the segment used
for user copyinout down to 12, and keeping segments 13/14 for
kernel VA.

It would be nice to have more available, but segments lower than
this are reserved for either memory or 1:1 mapped device i/o,
and seg 15 is OpenFirmware ROM. Also, the effort to keep OpenFirmware
available for callbacks limits the use of VA-mapped segments.
Fortunately UMA_MD_SMALL_ALLOC takes away a lot of VM pressure.

Obtained from:  NetBSD
2004-03-02 06:49:21 +00:00
Peter Grehan
919cb3362f Kernel changes for libthr (and probably libpthread).
include/ucontext.h
 - remove trapframe and switch over to 'generic' description of machine
   state. Include version field to help with future modifications.
   Include floating point and altivec state, and hopefully align
   correctly

powerpc/copyinout.c
 - fill out casuptr() sync primitive, required by kern_umtx.c

powerpc/machdep.c
 - shifted proc0/thread0/pcpu setup to before cninit, since
   syscons -> make_dev -> devlock requires a valid curthread
 - implemented get_mcontext/set_mcontext
 - recast sendsig/sigreturn to use get/set_mcontext and new
   ucontext struct. floating point now saved
 - TODO: save/restore altivec state

powerpc/vm_machdep.c
 - implemented cpu_thread_setup/cpu_set_upcall/cpu_set_upcall_kse
 - eliminated trailing whitespace

Submitted by:  Suleiman Souhlal <refugee@segfaulted.com>, ucontext by grehan
2004-03-02 06:13:09 +00:00
Peter Grehan
80bd99be33 Bring to working PIO state.
- use correct rid when allocating PCI mem resource
 - ATA taskfile registers are indeed spaced 0x10 apart just like
 the Macio ATA cell. Adjust offsets in ATA channel struct.

Tested by:  Suleiman Souhlal <ssouhlal@vt.edu>
2004-02-29 06:01:16 +00:00
Peter Grehan
321fd46031 Work-in-progress for the 'Kauai' ATA device in Mac notebooks. The
device seems to be the macio ATA cell with a PCI front-end, and
has no relation to PIIX-style ATA/PCI devices.
2004-02-12 09:17:16 +00:00
Peter Grehan
a3063d483e Add sys file required for IEEE fp functions.
Submitted by:  Suleiman Souhlal <refugee@segfaulted.com>
2004-02-12 09:12:11 +00:00
Peter Grehan
49f397d0c3 Interrupt statistics, vmstat -i now works.
Submitted by:  Suleiman Souhlal <refugee@segfaulted.com>
Slightly modified by: grehan
Derived from:  i386
2004-02-11 13:18:31 +00:00
Peter Grehan
9c24bed2d9 Clean up header files, which fixes compile warning. 2004-02-11 10:49:30 +00:00
Peter Grehan
69a9f22118 - constify devinfo strings to eliminate compile warning
- remove trailing whitespace
2004-02-11 10:15:15 +00:00
Peter Grehan
3102ccf30c - fix compile warnings
- removed obsolete NetBSD-derived ADB conditionals
2004-02-11 08:07:19 +00:00
Peter Grehan
1820f9fe29 - fixed trailing whitespace and indentation
- removed unused variable to fix compile warning
2004-02-11 07:58:43 +00:00
Peter Grehan
735e89e8a5 Fix compile warning 2004-02-11 07:48:19 +00:00
Peter Grehan
475a183dd1 - remove trailing whitespace
- fix compile warnings. badaddr() will go to a header file soon.
2004-02-11 07:44:56 +00:00
Peter Grehan
7c2779715c Cleaned up param.h:
- culled long-dead #define's
 - segment register defs moved to sr.h
 - NPMAPS moved to pmap.h
 - KERNBASE moved to vmparam.h
 - removed include of <machine/cpu.h> and fixed src files that
   relied on this.

Modifying segment register code no longer causes gcc rebuilds :-)
2004-02-11 07:27:34 +00:00
Peter Grehan
d1850887de Invalide pcb's fpu cpu # by setting it to INT_MAX, not NULL. 2004-02-11 07:19:15 +00:00
Peter Grehan
7d23b5b7db Add sysctl hw.uma_mdpages to track how many pages have been allocated
by UMA_MD_SMALL_ALLOC
2004-02-11 04:42:48 +00:00
Peter Grehan
439696f355 Correctly create interrupt key for PCI, which is the OpenFirmware
pci-hi/med/lo + node 'interrupts' property. This worked by
accident until recent notebooks required correct operation.

Tested by:  Suleiman Souhlal <refugee@segfaulted.com>
2004-02-10 23:57:35 +00:00
Peter Grehan
a4d2c25de5 Disable branch-target instruction cache on MPC7457 as outlined
in Motorola processor errata.

Submitted by:  Suleiman Souhlal <refugee@segfaulted.com>
2004-02-09 07:04:01 +00:00
Peter Grehan
ef7efb4ab0 Recognize MPC7547 (aka G4+) 2004-02-09 02:25:24 +00:00
Peter Grehan
e6d3e1c2c6 Definitions for MPC7457 CPU type and HID0 bits 2004-02-09 00:12:50 +00:00
Peter Grehan
174e81ed65 - add a description of what .gdbinit should contain.
- add an option for the output device in the hope that this can
  be made non-blocking at some stage.
- define an alias for the disk device, required by dev/ofw/ofw_disk.c
- shift iobus to 0x9000000 so as not to clash with the OpenFirmware
  entry point of 0x8000400 when address decoding.
- down-tone comments about the disk dev config :-)
2004-02-04 13:23:05 +00:00
Peter Grehan
0ee6dbd789 Remove pmap_pvo_allocf zone alloc function. It was a way of
using the direct-mapping of physmem to force PTE data structures
to be physically addressable so the interrupt-time real-mode
DSI trap handler could perform PTE spills. However, the memory
may have been > 256Mb, which would have caused a BAT spill and
double-interrupt.

The new trap code no longer handles PTE spills, so the requirement
that these pages be direct-mapped no longer applies. The irony is
UMA_MD_SMALL_ALLOC will return direct mappings for these structs :-)
2004-02-04 13:16:21 +00:00
Peter Grehan
112a8d7bdb Major overhaul of common trap code
- remove unused 601 and tlb exception code
 - remove interrupt-time PTE spill code. The pmap code
   will now take care of pinning kernel PTEs, and there
   are no longer issues about physical mapping of PTE
   data structures
 - All segment registers are switched on kernel entry/exit,
   allowing the kernel to have more virtual space and for
   user virtual space to extend to 4G.
 - The temporary register save area has been shifted from
   unused exception vector space to the per-cpu data area.
   This allows interrupts to be delivered to multiple CPUs
 - ISI traps no longer spill to BAT tables. It is assumed
   that all of kernel instruction memory is pinned.
 - shift from 'ldmw/stmw' instructions to individual register
   loads/stores when saving context. All PPC manuals indicate
   this should be much faster.
 - use '%r' for register names throughout.

TODO: need to test if DSI traps were the result of kernel stack
guard-page hits.

Reworked from:  NetBSD
2004-02-04 13:10:25 +00:00
Peter Grehan
a6d9116665 - remove unused trap definitions
- ISI traps are now handled by the generic trap routine
- direct diagnostic traps to DDB if defined
- remove unused asngen pcpu init
2004-02-04 13:00:56 +00:00
Peter Grehan
aa6bcb7d23 - Lots more symbols required by the new trap_subr code 2004-02-04 12:58:49 +00:00
Peter Grehan
867069044e - Add definition for GET_CPUINFO, required by new trap_subr code
- garbage-collect unused defs
2004-02-04 12:57:41 +00:00
Peter Grehan
10df017f33 Move temporary register save area from exception-vector memory to
per-CPU memory. This allows for interrupt handling on multiple CPUs.

Obtained from: NetBSD
2004-02-04 12:56:15 +00:00
Peter Grehan
9960916dbb Allow child devices to set the OpenFirmware device node ivar 2004-02-04 12:50:47 +00:00
Peter Grehan
78bdfb1f1c - removed debug printf that was a false positive on non-OpenPIC systems
- white space nits
2004-02-04 04:53:09 +00:00
Peter Grehan
2894a94905 Use device alias "mpic" to locate the macio OpenPIC. This works
on the new 12/15/17" PowerBooks that don't have the "interrupt-controller"
property underneath "/chosen", which was the previous way of
searching.
2004-02-03 08:00:37 +00:00
Peter Grehan
0efd0097cb When UMA_MD_SMALL_ALLOC is defined, pmap_kextract will be called
for direct-mapped addresses. Assume that any address less than KVA
is one of these and return it. Also assert that an address is KVA
does have a valid mapping - callers of pmap_kextract don't check
the return value, since they assume that they have a valid virtual
address.
2004-01-29 00:45:41 +00:00
Peter Grehan
db55e39aa1 Implement UMA_MD_SMALL_ALLOC, since the BAT registers allow direct
addressing of memory. Makes a substantial improvement for apps that
stress the limited amount of KVM on PPC (e.g. untarring the ports tree).

uma_machdep.c stolen from amd64/ia64.
2004-01-29 00:32:22 +00:00
Jeff Roberson
048ac395be - Recruit some new ULE users by making it the default scheduler in GENERIC.
ULE will be in a probationary period to determine whether it will be left
   as the default in 5.3 which would likely mean the rest of the 5.x series.
2004-01-24 21:38:52 +00:00
Jacques Vidrine
5864cda7c6 Add PFIL_HOOKS to the GENERIC kernel configuration, primarily so
that one can load the IPFilter module (which requires PFIL_HOOKS).

Requested by:	Many, for over a year
2004-01-24 14:59:51 +00:00
Peter Grehan
e878e0085f Add syscons options and enable USB, since there is no conflict between
the OpenFirmware console and the syscons console when using a USB
keyboard.
2004-01-21 05:22:53 +00:00
Peter Grehan
e976ea5a89 - Catch up with panic __LINE__/__FILE__ changes by moving panic calls
out of asm.
- remove some long-dead code from machdep.c
2004-01-21 05:18:08 +00:00
Peter Grehan
462ded3729 A syscons implementation using the 8-bit framebuffer set up by
OpenFirmware. Not at all optimized, but provides a PC-style
user-experience.

Tested on revA imac, B&W G3, 2k iBook, and G4 eMac.
2004-01-21 05:16:23 +00:00
Peter Grehan
feb43b1c96 Update 128-bit long double constants to match what is expected
by libc
2004-01-21 04:56:39 +00:00
Peter Grehan
ec9db41566 Catch up with ATA UMA changes 2004-01-15 23:52:32 +00:00
Peter Grehan
73cb337c32 Use a device identify entry point to attach to nexus, since the
nexus code no longer searches for interrupt controllers.
2004-01-13 11:25:40 +00:00
Peter Grehan
739af9bcb5 Make the OpenPic driver bus-independent, with attachments for
the MacIO chip and PSIM's IOBus. Bus-specific drivers should
use the identify method to attach themselves to nexus so
interrupt can be allocated before the h/w is probed. The
'early attach' routine in openpic is used for this stage
of boot. When h/w is probed, the openpic can be attached
properly. It will enable interrupts allocated prior to
this.
2004-01-13 11:24:36 +00:00
Peter Grehan
8dbee7197d Remove hard-coded knowledge of specific OFW devices. Use bus_generic_probe
and add_child entry point to allow devices to use the identify
method to add themselves if need be (e.g. openpic, syscons).
Export interrupt-controller-add routine for extern int cntlr drivers.
Eliminate recursive OFW device-tree walk and only iterate the
top-level ala sparc64. Allow child devices to set the device
type with write_ivars.

Step 1 of many in removing the hard-dependency on OpenFirmware.
2004-01-13 11:20:52 +00:00
Peter Grehan
c576427c52 Catch up with ATA changes by including <sys/sema.h> 2004-01-13 10:54:35 +00:00
David Xu
a30ec4b99c Make sigaltstack as per-threaded, because per-process sigaltstack state
is useless for threaded programs, multiple threads can not share same
stack.
The alternative signal stack is private for thread, no lock is needed,
the orignal P_ALTSTACK is now moved into td_pflags and renamed to
TDP_ALTSTACK.
For single thread or Linux clone() based threaded program, there is no
semantic changed, because those programs only have one kernel thread
in every process.

Reviewed by: deischen, dfr
2004-01-03 02:02:26 +00:00
Mike Silbersack
ddeb5b242e Track three new sendfile-related statistics:
- The number of times sendfile had to do disk I/O
- The number of times sfbuf allocation failed
- The number of times sfbuf allocation had to wait
2003-12-28 08:57:09 +00:00
Mike Silbersack
5caf2b00f0 Move the declaration of sfbufspeak and sfbufsused to mbuf.h,
and use imax instead of max, as sfbufspeak and sfbufsused
are signed.

Submitted by:   bde
2003-12-28 01:43:22 +00:00
Mike Silbersack
5eda9873e9 Track current and peak sfbuf usage, export the values via sysctl. 2003-12-27 07:52:47 +00:00
Peter Wemm
c15e347e22 GC the unused <machine/kse.h> file. 2003-12-24 00:51:30 +00:00
Peter Wemm
9b68618df0 Add an additional field to the elf brandinfo structure to support
quicker exec-time replacement of the elf interpreter on an emulation
environment where an entire /compat/* tree isn't really warranted.
2003-12-23 02:42:39 +00:00
Peter Grehan
7b33c6ef7a Disable the per-vm_page PTE cache. This was not being invalidated
correctly, resulting in the dreaded "vm_pageout_flush: partially
invalid page" panic. The caching issue will be revisited in the
future, but opt for safety over performance in the meantime.

Tested by: gallatin
2003-12-16 03:55:57 +00:00
Peter Grehan
71bf803ad6 imac revA-D and beige G3 OpenFirmware uses the "ide" string for
ATA drives.
2003-12-10 08:58:48 +00:00
Peter Grehan
1d9c166f51 - removed obsolete ppc_exit/ppc_boot functions
- OpenFirmware returns overlapping memory regions. Use a simple
  brute force algorithm to merge these into non-overlapping
  regions. This fixes bugs in reporting of available memory
  and also prevents pages from being added twice in the VM system.
2003-12-10 08:55:53 +00:00
Andrew Gallatin
01ff47342a Remove redundant declaration of ddb_trap 2003-12-09 15:46:33 +00:00
Andrew Gallatin
4f7daed045 pmap_query_bit() should return false if the bit is not set.
Reviewed by: grehan
2003-12-09 14:47:33 +00:00
Andrew Gallatin
eaa53cc8fc Use the "shut-down" and "reset-all" Forth procedures to halt and
reboot, as calling OF_exit() just hangs a mac.

FreeBSD on my G4 800Mhz mac behaves identically to OSX for halt
and reboot now.

Reviewed by: grehan  (who also supplied the concept and sample code)
2003-12-09 14:45:39 +00:00
Andrew Gallatin
67e945bab9 Make breakpoint() actually break into ddb.
Reviewed by: grehan
2003-12-09 13:37:31 +00:00
John Baldwin
798a45964d - Split cpu_mp_probe() into two parts. cpu_mp_setmaxid() is still called
very early (SI_SUB_TUNABLES - 1) and is responsible for setting mp_maxid.
  cpu_mp_probe() is now called at SI_SUB_CPU and determines if SMP is
  actually present and sets mp_ncpus and all_cpus.  Splitting these up
  allows an architecture to probe CPUs later than SI_SUB_TUNABLES by just
  setting mp_maxid to MAXCPU in cpu_mp_setmaxid().  This could allow the
  CPU probing code to live in a module, for example, since modules
  sysinit's in modules cannot be invoked prior to SI_SUB_KLD.  This is
  needed to re-enable the ACPI module on i386.
- For the alpha SMP probing code, use LOCATE_PCS() instead of duplicating
  its contents in a few places.  Also, add a smp_cpu_enabled() function
  to avoid duplicating some code.  There is room for further code
  reduction later since much of this code is also present in cpu_mp_start().
- All archs besides i386 still set mp_maxid to the same values they set it
  to before this change.  i386 now sets mp_maxid to MAXCPU.

Tested on:	alpha, amd64, i386, ia64, sparc64
Approved by:	re (scottl)
2003-11-21 22:23:26 +00:00
Peter Wemm
0bfbe7b935 Widen the enable/disable helper function's argument in line with the
ithread_create() changes etc.  This should be mostly a NOP.
2003-11-17 06:10:15 +00:00
Alan Cox
0ec3db3072 - Remove unnecessary synchronization from sf_buf_init(). (There is only
one active CPU when sf_buf_init() is performed.)
2003-11-16 23:40:06 +00:00
Alan Cox
e45db9b837 - Modify alpha's sf_buf implementation to use the direct virtual-to-
physical mapping.
 - Move the sf_buf API to its own header file; make struct sf_buf's
   definition machine dependent.  In this commit, we remove an
   unnecessary field from struct sf_buf on the alpha, amd64, and ia64.
   Ultimately, we may eliminate struct sf_buf on those architecures
   except as an opaque pointer that references a vm page.
2003-11-16 06:11:26 +00:00
Marcel Moolenaar
fcaa2925a9 Change the clear_ret argument of get_mcontext() to be a flags argument.
Since all callers either passed 0 or 1 for clear_ret, define bit 0 in
the flags for use as clear_ret. Reserve bits 1, 2 and 3 for use by MI
code for possible (but unlikely) future use. The remaining bits are for
use by MD code.

This change is triggered by a need on ia64 to have another knob for
get_mcontext().
2003-11-09 20:31:04 +00:00
Peter Wemm
1b03813f65 Add a stub cpu_idle() function for sparc64, alpha, powerpc. This is a
MI declared function so it should be everywhere.
2003-10-19 02:36:07 +00:00
Bruce M Simpson
2bc7dd5661 Move pmap_resident_count() from the MD pmap.h to the MI pmap.h.
Add a definition of pmap_wired_count().
Add a definition of vmspace_wired_count().

Reviewed by:	truckman
Discussed with:	peter
2003-10-06 01:47:12 +00:00
Alan Cox
566526a957 Migrate pmap_prefault() into the machine-independent virtual memory layer.
A small helper function pmap_is_prefaultable() is added.  This function
encapsulate the few lines of pmap_prefault() that actually vary from
machine to machine.  Note: pmap_is_prefaultable() and pmap_mincore() have
much in common.  Going forward, it's worth considering their merger.
2003-10-03 22:46:53 +00:00
Peter Grehan
02b63ceaff DELAY must be a routine, not a macro definition. 2003-09-26 09:02:24 +00:00
Peter Wemm
c460ac3a00 Add sysentvec->sv_fixlimits() hook so that we can catch cases on 64 bit
systems where the data/stack/etc limits are too big for a 32 bit process.

Move the 5 or so identical instances of ELF_RTLD_ADDR() into imgact_elf.c.

Supply an ia32_fixlimits function.  Export the clip/default values to
sysctl under the compat.ia32 heirarchy.

Have mmap(0, ...) respect the current p->p_limits[RLIMIT_DATA].rlim_max
value rather than the sysctl tweakable variable.  This allows mmap to
place mappings at sensible locations when limits have been reduced.

Have the imgact_elf.c ld-elf.so.1 placement algorithm use the same
method as mmap(0, ...) now does.

Note that we cannot remove all references to the sysctl tweakable
maxdsiz etc variables because /etc/login.conf specifies a datasize
of 'unlimited'.  And that causes exec etc to fail since it can no
longer find space to mmap things.
2003-09-25 01:10:26 +00:00
Peter Grehan
7a77eb896e _MACHINE/_MACHINE_ARCH shouldn't be quoted. Found by trying to
compile the isp driver.
2003-09-24 01:45:07 +00:00
Peter Grehan
84792e72d6 Soften assert in pmap_remove_all.
Introduct pmap_extract_and_hold.

Stolen from: sparc64
2003-09-22 11:59:05 +00:00
Peter Grehan
250fe3a662 ATAng requires <sys/taskqueue.h> 2003-09-22 11:55:02 +00:00
Alexander Kabaev
1d49585050 Standardize idempotentcy ifdefs. Consistently use _MACHINE_VARARGS_H_
symbol.
2003-09-01 03:01:45 +00:00
Alan Cox
411d10a600 Migrate the sf_buf allocator that is used by sendfile(2) and zero-copy
sockets into machine-dependent files.  The rationale for this
migration is illustrated by the modified amd64 allocator.  It uses the
amd64's direct map to avoid emphemeral mappings in the kernel's
address space.  On an SMP, the emphemeral mappings result in an IPI
for TLB shootdown for each transmitted page.  Yuck.

Maintainers of other 64-bit platforms with direct maps should be able
to use the amd64 allocator as a reference implementation.
2003-08-29 20:04:10 +00:00
Warner Losh
d2c5276d96 Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.
2003-08-22 07:39:05 +00:00
Gordon Tetlow
df3d69c217 Fixup the ELF branding information to point to the new home of rtld. 2003-08-17 08:08:38 +00:00
Marcel Moolenaar
710338e94f In vm_thread_swap{in|out}(), remove the alpha specific conditional
compilation and replace it with a call to cpu_thread_swap{in|out}().
This allows us to add similar code on ia64 without cluttering the
code even more.
2003-08-16 23:15:15 +00:00
Marcel Moolenaar
26502503e5 Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI
prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to
cpu.h. This affects db_command.c and kern_shutdown.c.

ia64: move all MD prototypes from cpu.h to md_var.h. This affects
madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory().
It's not used (vm_machdep.c).

alpha: the MD prototypes have been left in cpu.h with a comment
that they should be there. Moving them is left for later. It was
expected that the impact would be significant enough to be done in
a seperate commit.

powerpc: MD prototypes left in cpu.h. Comment added.

Suggested by: bde
Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
Peter Grehan
eac100658a Update powerpc to use the (old thread,new thread) calling convention
for cpu_throw() and cpu_switch().
2003-08-14 03:56:24 +00:00
Warner Losh
06b4bf3e55 Expand inline the relevant parts of src/COPYRIGHT for Matt Dillon's
copyrighted files.

Approved by: Matt Dillon
2003-08-12 23:24:05 +00:00
John Baldwin
3bdbd658f1 - Since td_critnest is now initialized in MI code, it doesn't have to be
set in cpu_critical_fork_exit() anymore.
- As far as I can tell, cpu_thread_link() has never been used, not even
  when it was originally added, so remove it.
2003-08-04 20:32:45 +00:00
David E. O'Brien
eeb086be33 Deal with GCC annoyingly defining _BIG_ENDIAN. 2003-08-03 07:53:50 +00:00
Alan Cox
e53f32ace5 Use kmem_alloc_nofault() rather than kmem_alloc_pageable() in pmap_mapdev().
See revision 1.140 of kern/sys_pipe.c for a detailed rationale.

Submitted by:	tegge
2003-08-02 19:26:09 +00:00
Bosko Milekic
b053bc8407 Make sure that when the PV ENTRY zone is created in pmap, that it's
created not only with UMA_ZONE_VM but also with UMA_ZONE_NOFREE.  In
the i386 case in particular, the pmap code would hook a special
page allocation routine that allocated from kernel_map and not kmem_map,
and so when/if the pageout daemon drained the zones, it could actually
push out slabs from the PV ENTRY zone but call UMA's default page_free,
which resulted in pages allocated from kernel_map being freed to
kmem_map; bad.  kmem_free() ignores the return value of the
vm_map_delete and just returns.  I'm not sure what the exact
repercussions could be, but it doesn't look good.

In the PAE case on i386, we also set-up a zone in pmap, so be
conservative for now and make that zone also ZONE_NOFREE and
ZONE_VM.  Do this for the pmap zones for the other archs too,
although in some cases it may not be entirely necessarily.  We'd
rather be safe than sorry at this point.

Perhaps all UMA_ZONE_VM zones should by default be also
UMA_ZONE_NOFREE?

May fix some of silby's crashes on the PV ENTRY zone.
2003-07-31 03:39:51 +00:00
Peter Wemm
ad7a226f9d Deal with 'options KSTACK_PAGES' being a global option. 2003-07-31 01:31:32 +00:00
Alan Cox
cdedf48666 Make pmap_pvo_allocf() callable without Giant. 2003-07-27 20:57:53 +00:00
Maxime Henrion
d5afecd068 - Introduce a new busdma flag BUS_DMA_ZERO to request for zero'ed
memory in bus_dmamem_alloc().  This is possible now that
  contigmalloc() supports the M_ZERO flag.
- Remove the locking of Giant around calls to contigmalloc() since
  contigmalloc() now grabs Giant itself.
2003-07-27 13:52:10 +00:00
David Xu
20a2d71332 Rename thread_siginfo to cpu_thread_siginfo.
Suggested by: jhb
2003-07-15 00:11:04 +00:00
Alan Cox
1f78f902a8 Background: pmap_object_init_pt() premaps the pages of a object in
order to avoid the overhead of later page faults.  In general, it
implements two cases: one for vnode-backed objects and one for
device-backed objects.  Only the device-backed case is really
machine-dependent, belonging in the pmap.

This commit moves the vnode-backed case into the (relatively) new
function vm_map_pmap_enter().  On amd64 and i386, this commit only
amounts to code rearrangement.  On alpha and ia64, the new machine
independent (MI) implementation of the vnode case is smaller and more
efficient than their pmap-based implementations.  (The MI
implementation takes advantage of the fact that objects in -CURRENT
are ordered collections of pages.)  On sparc64, pmap_object_init_pt()
hadn't (yet) been implemented.
2003-07-03 20:18:02 +00:00
Scott Long
f6b1c44d1f Mega busdma API commit.
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00
Alan Cox
dca96f1adc - Export pmap_enter_quick() to the MI VM. This will permit the
implementation of a largely MI pmap_object_init_pt() for vnode-backed
   objects.  pmap_enter_quick() is implemented via pmap_enter() on sparc64
   and powerpc.
 - Correct a mismatch between pmap_object_init_pt()'s prototype and its
   various implementations.  (I plan to keep pmap_object_init_pt() as
   the MD hook for device-backed objects on i386 and amd64.)
 - Correct an error in ia64's pmap_enter_quick() and adjust its interface
   to match the other versions.  Discussed with: marcel
2003-06-29 21:20:04 +00:00
Peter Grehan
fd05df3205 Allow the interrupt controller to be probed - this picks up the
Heathrow PIC, while not affecting the OpenPIC.
2003-06-29 02:05:19 +00:00
Peter Grehan
bd687ebf3b A module to handle the interrupt controller on Heathrow/Paddington
MacIO chips, found on older Mac G3's.
2003-06-28 08:52:49 +00:00
Peter Grehan
4b7624a5f7 A module for the Motorola MPC106 system controller aka 'Grackle'
found on older Mac G3's.
2003-06-28 08:51:22 +00:00
David Xu
b8f480ab94 Add a machine depended function thread_siginfo, SA signal code
will use the function to construct a siginfo structure and use
the result to export to userland.

Reviewed by: julian
2003-06-28 06:34:08 +00:00
Scott Long
3eaffdf7e0 Do the first and mostly mechanical step of adding mutex support to the
bus_dma async callback scheme.  Note that sparc64 does not seem to do
async callbacks.  Note that ia64 callbacks might not be MPSAFE at the
moment.  Note that powerpc doesn't seem to do async callbacks due to
the implementation being incomplete.

Reviewed by:	mostly silence on arch@
2003-06-27 08:31:48 +00:00
Peter Grehan
f209c40211 Remove unused bootpath[] variable. It conflicted with a declaration
in the sunlabel utility, causing build problems.
2003-06-25 08:11:29 +00:00
Alan Cox
49a2507bd1 Migrate the thread stack management functions from the machine-dependent
to the machine-independent parts of the VM.  At the same time, this
introduces vm object locking for the non-i386 platforms.

Two details:

1. KSTACK_GUARD has been removed in favor of KSTACK_GUARD_PAGES.  The
different machine-dependent implementations used various combinations
of KSTACK_GUARD and KSTACK_GUARD_PAGES.  To disable guard page, set
KSTACK_GUARD_PAGES to 0.

2. Remove the (unnecessary) clearing of PG_ZERO in vm_thread_new.  In
5.x, (but not 4.x,) PG_ZERO can only be set if VM_ALLOC_ZERO is passed
to vm_page_alloc() or vm_page_grab().
2003-06-14 23:23:55 +00:00
Alan Cox
89f4fca265 Move the *_new_altkstack() and *_dispose_altkstack() functions out of the
various pmap implementations into the machine-independent vm.  They were
all identical.
2003-06-14 06:20:25 +00:00
Peter Wemm
77e2a274d0 GC unused cpu_wait() function 2003-06-11 05:20:33 +00:00
Juli Mallett
d196a10856 Note that scbus is required for SCSI, not just "required" in general.
Submitted by:	Edward Kaplan (tmbg37 on IRC)
Reviewed by:	rwatson (in principle)
2003-06-08 02:03:02 +00:00
Marcel Moolenaar
11e0f8e16d Change the second (and last) argument of cpu_set_upcall(). Previously
we were passing in a void* representing the PCB of the parent thread.
Now we pass a pointer to the parent thread itself.
The prime reason for this change is to allow cpu_set_upcall() to copy
(parts of) the trapframe instead of having it done in MI code in each
caller of cpu_set_upcall(). Copying the trapframe cannot always be
done with a simply bcopy() or may not always be optimal that way. On
ia64 specifically the trapframe contains information that is specific
to an entry into the kernel and can only be used by the corresponding
exit from the kernel. A trapframe copied verbatim from another frame
is in most cases useless without some additional normalization.

Note that this change removes the assignment to td->td_frame in some
implementations of cpu_set_upcall(). The assignment is redundant.
A previous call to cpu_thread_setup() already did the exact same
assignment. An added benefit of removing the redundant assignment is
that we can now change td_pcb without nasty side-effects.

This change officially marks the ability on ia64 for 1:1 threading.

Not tested on: amd64, powerpc
Compile & boot tested on: alpha, sparc64
Functionally tested on: i386, ia64
2003-06-04 21:13:21 +00:00
Poul-Henning Kamp
961de0b761 Remove #include <sys/disklabel.h> 2003-06-01 09:25:17 +00:00
Scott Long
7e71df9339 Bring back bus_dmasync_op_t. It is now a typedef to an int, though the
BUS_DMASYNC_ definitions remain as before.  The does not change the ABI,
and reverts the API to be a bit more compatible and flexible.  This has
survived a full 'make universe'.

Approved by:	re (bmah)
2003-05-27 04:59:59 +00:00
Alexander Kabaev
980ded9a7d sys/sys/limits.h:
- Fix visibilty test for LONG_BIT and WORD_BIT.  `#if defined(__FOO_VISIBLE)'
   is alays wrong because __FOO_VISIBLE is always defined (to 0 for
   invisibility).

sys/<arch>/include/limits.h
sys/<arch>/include/_limits.h:

 - Style fixes.

Submitted by:	bde
Reviewed by:	bsdmike
Approved by:	re (scottl)
2003-05-19 20:29:07 +00:00
John Baldwin
90af4afacb - Merge struct procsig with struct sigacts.
- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)
2003-05-13 20:36:02 +00:00
David E. O'Brien
28e257139a Things run thru the C preprocessor must use C-style comments. 2003-05-05 10:01:10 +00:00
Alexander Kabaev
0eda4c08a5 Style fixes.
Remove DBL_DIG, DBL_MIN, DBL_MAX and their FLT_ counterparts, they
were marked for deprecation ever since SUSv1 at least.
Only define ULLONG_MIN/MAX and LLONG_MAX if long long type is
supported.
Restore a lost comment in MI _limits.h file and remove it from
sys/limits.h where it does not belong.
2003-05-04 22:13:04 +00:00
Peter Wemm
161af19be7 Back out last commits. The elf64/elf32 kernel name thing was more pain
than it was worth.
2003-05-01 03:33:28 +00:00
Peter Wemm
7f47668191 Slight reorg and added AMD64 support. A couple of the MODINFOMD_* values
that were added to sparc64 and later powerpc, really should have been in
the MI area.  But changing that now with insufficient preperation will
just cause too much pain.

Move MD_FETCH() to the MI sys/linker.h file to avoid another two copies
of it.
2003-05-01 03:31:18 +00:00
Peter Wemm
1de0385cfc Fix transcription error. Use == NULL, not != NULL. Fortunately this
was harmless.
2003-04-30 22:09:26 +00:00
Peter Wemm
dae0bca875 Look for an elf32 kernel (powerpc) and elf64 kernel (sparc64) as well
as a plain "elf kernel".
2003-04-30 22:05:48 +00:00
John Baldwin
d90e753aa8 Range check the syscall number before looking it up in the syscallnames[]
array.

Submitted by:	pho
2003-04-30 17:59:27 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
John Baldwin
7ff022c485 - Push down Giant into the sysarch() calls that still need Giant.
- Standardize on EINVAL rather than EOPNOTSUPP if the sysarch op value is
  invalid.
2003-04-25 20:04:02 +00:00
Daniel Eischen
1328e1c4be Add an argument to get_mcontext() which specified whether the
syscall return values should be cleared.  The system calls
getcontext() and swapcontext() want to return 0 on success
but these contexts can be switched to at a later time so
the return values need to be cleared in the saved register
sets.  Other callers of get_mcontext() would normally want
the context without clearing the return values.

Remove the i386-specific context saving from the KSE code.
get_mcontext() is not i386-specific any more.

Fix a bad pointer in the alpha get_mcontext() code.  The
context was being bcopy()'d from &td->tf_frame, but tf_frame
is itself a pointer, so the thread was being copied instead.
Spotted by jake.

Glanced at by:  jake
Reviewed by:    bde (months ago)
2003-04-25 01:50:30 +00:00
Alexander Kabaev
6fd839f9c7 Add a new sys/limits.h file which in turn depends on machine/_limits.h
to get actual constant values. This is in preparation for machine/limits.h
retirement.

Discussed on:	standards@
Submitted by:	Craig Rodrigues <rodrigc@attbi.com>  (*)
Modified by:	kan
2003-04-23 21:41:59 +00:00
Hidetoshi Shimokawa
f73a5a7f66 add scbus for FireWire. 2003-04-22 04:39:20 +00:00
Hidetoshi Shimokawa
092cd06fcd Add FireWire drivers to GENERIC. 2003-04-21 16:44:05 +00:00
Peter Grehan
5a2409f32c Fix compile warning - proc should have been thread. 2003-04-19 02:18:51 +00:00
Peter Grehan
1fea81e0da Remove reference to ata resource in print_child. 2003-04-18 02:47:12 +00:00
Peter Grehan
accf6b7248 Remove sparse address hack. 2003-04-18 02:46:12 +00:00
Peter Grehan
da5dcc52fc Vastly simplify the macio ATA attachment, now that the register file
indirection is handled in the ATA common code.
2003-04-18 02:43:23 +00:00
Peter Grehan
5f9dfe1e17 Remove sparse addressing hack. The macio ATA driver no longer requires
this.
2003-04-18 02:42:27 +00:00
Peter Grehan
1e1e003218 - Convert NetBSD-derived macros to inline functions for better
type-checking and future debug code.
- Remove sparse addressing hack, since the only consumer, the macio ATA
  driver, doesn't require it anymore.
2003-04-18 02:38:10 +00:00
Maxime Henrion
7a648f56cf I deserve a big pointy hat for having missed all those references
to bus_dmasync_op_t in my last commit.
2003-04-10 23:50:06 +00:00
Maxime Henrion
141bacb048 Change the operation parameter of bus_dmamap_sync() from an
enum to an int and redefine the BUS_DMASYNC_* constants as
flags.  This allows us to specify several operations in one
call to bus_dmamap_sync() as in NetBSD.
2003-04-10 23:03:33 +00:00
Dag-Erling Smørgrav
fe58453891 Introduce an M_ASSERTPKTHDR() macro which performs the very common task
of asserting that an mbuf has a packet header.  Use it instead of hand-
rolled versions wherever applicable.

Submitted by:	Hiten Pandya <hiten@unixdaemons.com>
2003-04-08 14:25:47 +00:00
Dag-Erling Smørgrav
9f45b2da8f Define ovbcopy() as a macro which expands to the equivalent bcopy() call,
to take care of the KAME IPv6 code which needs ovbcopy() because NetBSD's
bcopy() doesn't handle overlap like ours.

Remove all implementations of ovbcopy().

Previously, bzero was a function pointer on i386, to save a jmp to
bzero_vector.  Get rid of this microoptimization as it only confuses
things, adds machine-dependent code to an MD header, and doesn't really
save all that much.

This commit does not add my pagezero() / pagecopy() code.
2003-04-04 17:29:55 +00:00
David E. O'Brien
8368cf8f75 Use __FBSDID rather than rcsid[]. 2003-04-03 21:36:33 +00:00
Jeff Roberson
b8db34d280 - 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 Roberson
4093529dee - 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 Roberson
1bf4700bff - 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 Burkholder
227f9a1c58 - 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
Ruslan Ermilov
ab0f83bd03 Remove bitrot associated with `maxusers'.
Submitted by:	bde
2003-03-22 14:18:23 +00:00
Maxime Henrion
fd1b2ab0c9 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
Peter Grehan
a29355a07b Enable the FPU on first use per-thread and save state across context
switches. Not as lazy as it could be. Changing FPU state with sigcontext
still TODO.

fpu.c - convert some asm to inline C, and macroize fpu loads/stores
swtch.S - call out to save/restore fpu routines
trap.c - always call enable_fpu, since this shouldn't be called once
         the FPU has been enabled for a thread
genassym.c - define for pcb fpu flag
2003-03-20 10:28:20 +00:00
Peter Grehan
0b86d93fe6 - Add PCI ID for Paddington i/o controller, used in old G3's
- Add ID for the Intrepid i/o controller, used in new 12"/17" PowerBooks
- put IDs in chronological order
2003-03-20 10:18:01 +00:00
Peter Grehan
9b6595a08d Add machine check handler. While generally useful, it's required when
issuing PCI config cycles on MPC106-based PowerMacs, which cause machine
checks when accessing non-existent/empty slots.
2003-03-19 08:33:21 +00:00
Jake Burkholder
5501d40bb9 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
Maxime Henrion
c0796d1cb4 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
John Baldwin
263067951a Replace calls to WITNESS_SLEEP() and witness_list() with equivalent calls
to WITNESS_WARN().
2003-03-04 21:03:05 +00:00
Peter Grehan
03f5c00144 Simplify ofw_pci_fixup(). It doesn't need to be recursive, since the
bridge code already handles IRQ adjustment on the far side of a bridge.

Reviewed by:  benno
2003-03-03 12:05:06 +00:00
Benno Rice
82b65292eb These files are no longer used. They have been replaced with similarly named
.S files.
2003-02-28 03:35:42 +00:00
Peter Grehan
4b67de3419 Register typo and incorrect 32-bit constant load in previous commit.
Resulted in AST delivery not working.
2003-02-26 14:41:39 +00:00
Maxime Henrion
f6c912dd0c 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
Maxime Henrion
07159f9c56 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
Peter Grehan
597dc6637a Catch up with ATAng changes 2003-02-24 03:12:30 +00:00
Peter Grehan
9ea031d50b Doh. Forgot to remove _KERNEL version. 2003-02-23 13:47:44 +00:00
Peter Grehan
d273b006c5 Expose powerpc_mb() to user-space. Currently needed for atomic.h users,
this may go away in the future.
2003-02-22 22:58:13 +00:00
Peter Grehan
9ec2814126 Adjust IRQ count for psim's OpenPIC model - it seems to be
off by 1.
2003-02-20 01:59:42 +00:00
Peter Grehan
c0bf6c1f26 Catch up to latest KSE changes 2003-02-20 01:57:49 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Julian Elischer
4a338afd7a Move a bunch of flags from the KSE to the thread.
I was in two minds as to where to put them in the first case..
I should have listenned to the other mind.

Submitted by:	 parts by davidxu@
Reviewed by:	jeff@ mini@
2003-02-17 09:55:10 +00:00
Jeff Roberson
5215b1872f - Split the struct kse into struct upcall and struct kse. struct kse will
soon be visible only to schedulers.  This greatly simplifies much the
   KSE code.

Submitted by:	davidxu
2003-02-17 05:14:26 +00:00
Jeff Roberson
e4625663c9 - Move ke_sticks, ke_iticks, ke_uticks, ke_uu, ke_su, and ke_iu back into
the proc.  These counters are only examined through calcru.

Submitted by:	davidxu
Tested on:	x86, alpha, UP/SMP
2003-02-17 02:19:58 +00:00
Poul-Henning Kamp
f341ca9891 Remove #include <sys/dkstat.h> 2003-02-16 14:13:23 +00:00
David E. O'Brien
cc874de3f4 Fix whitespace problems with option lines. 2003-02-13 22:27:40 +00:00
David E. O'Brien
36dc5b9427 Fix the style of the SCHED_4BSD commit. 2003-02-13 22:24:44 +00:00
Peter Grehan
9412f79eaa Missed odd address test when transcribing the Alpha version.
This fixes the checksum problems seen with telnet.
2003-02-13 08:56:41 +00:00
Mike Barcroft
8cf5ed5125 Implement fpclassify():
o Add a MD header private to libc called _fpmath.h; this header
  contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
  contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
  storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
  double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
  HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
  <math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
  <machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
  on the size of its argument.  __fpclassifyl() is never called on
  alpha because (sizeof(long double) == sizeof(double)), which is good
  since __fpclassifyl() can't deal with such a small `long double'.

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

PR:		23103
Submitted by:	David Schultz <dschultz@uclink.Berkeley.EDU>
		(significant portions)
Reviewed by:	bde, fenner (earlier versions)
2003-02-08 20:37:55 +00:00
Benno Rice
658930c2c0 Oops. Include opt_ddb.h. 2003-02-06 11:07:39 +00:00
Benno Rice
d674899b66 Add a driver that attaches to the gpio node of macio and allows you to enter
DDB when the interrupt button (aka the "programmer's switch") is pressed.

This isn't unfortunately an NMI, but it's a handy way to get into DDB
quickly if needed.
2003-02-06 10:59:06 +00:00
Benno Rice
4ad661f495 Add a cast to silence a warning. 2003-02-06 10:47:57 +00:00
Benno Rice
24b51ed09e If a device tries to allocate an interrupt that's not on it's resource list,
assume that the child knows what it's doing and add it to the resource list.
2003-02-06 10:42:22 +00:00
Benno Rice
d417ef4a71 GC an unused variable. 2003-02-05 12:34:10 +00:00
Benno Rice
d8e3618615 Export the ns_per_tick variable through md_var.h rather than by declaring
it extern in cpu.c.
2003-02-05 12:33:49 +00:00
Benno Rice
bdfe5c9146 - Use cpu_setup() instead of identifycpu().
- Remove identifycpu().
2003-02-05 12:10:46 +00:00
Benno Rice
fb954d9d2f Add cpu.c. This contains one exported function, cpu_setup(), which handles
setup of and printing information about cpus.

Obtained from:	NetBSD (parts)
2003-02-05 12:09:53 +00:00
Benno Rice
19ca68d921 - Update spr.h
- Add hid.h

Obtained from:	NetBSD

NOTE: This undoes some changes I'd made to prefix the processor name defines
with PVR_.  This was due to my original decision to use MPC750 as a cpu name.
With this changed, the PVR_ change is no longer required.
2003-02-05 12:04:29 +00:00
Benno Rice
43e87179f8 Add an inline function wrapper for the mfpvf (Move From Processor Version
Register) instruction.
2003-02-05 11:59:27 +00:00
Benno Rice
c31c26450b Not all cpus are MPC750s. Replace the MPC750 cpu option with OEA. This
stands for Operating Environment Architecture and is the specification that
all of the MPC6xx, MPC7xx, MPC7xxx and IBM7xx CPUs adhere to.
2003-02-05 11:37:59 +00:00
Benno Rice
4a95ae9a68 Replace the inline asm in delay() with a while loop. This may not be as
efficient but it appears to actually work.  Some investigation may be
required.
2003-02-05 11:26:14 +00:00
Benno Rice
8bc7bc1ea0 - Rename the "powerpc" timecounter to the "decrementer" timecounter.
- Initialise it earlier.
2003-02-05 11:16:36 +00:00
Hartmut Brandt
e557905435 Fix a problem in bus_dmamap_load_{mbuf,uio} when the first mbuf or the first
uio segment is empty. In this case no dma segment is create by
bus_dmamap_load_buffer, but the calling routine clears the first flag.
Under certain combinations of addresses of the first and second mbuf/uio
buffer this leads to corrupted DMA segment descriptors. This was already
fixed by tmm in sparc64/sparc64/iommu.c.

PR:		kern/47733
Reviewed by:	sam
Approved by:	jake (mentor)
2003-02-04 16:30:27 +00:00
Jake Burkholder
238dd3209a Split statclock into statclock and profclock, and made the method for driving
statclock based on profhz when profiling is enabled MD, since most platforms
don't use this anyway.  This removes the need for statclock_process, whose
only purpose was to subdivide profhz, and gets the profiling clock running
outside of sched_lock on platforms that implement suswintr.
Also changed the interface for starting and stopping the profiling clock to
do just that, instead of changing the rate of statclock, since they can now
be separate.

Reviewed by:	jhb, tmm
Tested on:	i386, sparc64
2003-02-03 17:53:15 +00:00
Benno Rice
85139b2ac0 Add device zs to GENERIC on powerpc. 2003-02-02 06:11:23 +00:00
Josef Karthauser
c0c9e71f9a Put replace spaces with tabs in keeping with the rest of the file. 2003-02-01 18:45:18 +00:00
Julian Elischer
6f8132a867 Reversion of commit by Davidxu plus fixes since applied.
I'm not convinced there is anything major wrong with the patch but
them's the rules..

I am using my "David's mentor" hat to revert this as he's
offline for a while.
2003-02-01 12:17:09 +00:00
Benno Rice
cbab7e25fd - Introduce a flags value into the interrupt handler structure.
- Copy the flags passed to inthand_add into the flags value.
- If the interrupt is INTR_FAST, re-enable the irq after running the handler.
2003-02-01 07:20:36 +00:00
Peter Grehan
03b6e02551 - add pmap_pagedaemon_waken variable
- remove dead code and fix warnings in pmap_zero_page/zero_page_area
- implement
    pmap_clear_reference
    pmap_ts_referenced
    pmap_page_exists_quick
    pmap_remove_all
- align pmap_qenter/qremove closer with i386 code
- fix vm_page locking in pmap_new_thread (from benno)
- add new parameter to pmap_clear_bit to return original
  pte value

Approved by:  benno
2003-02-01 02:56:48 +00:00
Benno Rice
cefa2c2c6d Make nirq mean 'number of irqs' and not 'last irq'. 2003-02-01 00:43:25 +00:00
Benno Rice
fe5e7c6b2b Rework of how memory resources are discovered and dealt with in macio.
- Store the OpenFirmware "reg" property in the macio ivars.
- Use a struct to define the structure of a "reg" property entry.
- Discover all memory ranges, not just the first.
- In ata_macio, manage our own range and hand out our own allocations using
  bus_space_subregion.
- Fix bus_space_subregion to handle subregions of sparse maps.
2003-01-30 11:28:29 +00:00
Benno Rice
7b4359b47d Put the right fix in. Instead of deleting the declaration of __FBSDID, we
undef it before this definition.
2003-01-28 10:54:31 +00:00
Benno Rice
a7c9d6bca5 Back the previous commit out. It didn't actually fix the problem I was
seeing and the memory barrier isn't needed with the bridges we're using.

Fix the function style however.
2003-01-27 12:59:52 +00:00
Benno Rice
b3c02b110a Back out some changes that snuck in with the last commit.
Pointy hat to:	benno
2003-01-27 04:32:10 +00:00
Benno Rice
622cfbd033 Flesh out bus_dmamap_sync. 2003-01-27 04:27:01 +00:00
Benno Rice
8519f3983c Use td->td_sticks, not td->td_kse->ke_sticks.
Forgotten by:	davidxu
2003-01-27 04:26:09 +00:00
Benno Rice
7b180a30e1 Remove a duplicate definition of the __FBSDID macro. 2003-01-27 04:24:57 +00:00
David Xu
0dbb100b9b Move UPCALL related data structure out of kse, introduce a new
data structure called kse_upcall to manage UPCALL. All KSE binding
and loaning code are gone.

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

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

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

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

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

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

Reviewed by: julian
2003-01-26 11:41:35 +00:00
Jeff Roberson
c3384118a1 - Introduce the SCHED_ULE and SCHED_4BSD options for compile time selection
of the scheduler.
 - Add SCHED_4BSD as the scheduler for all kernel config files in cvs.
2003-01-26 05:29:12 +00:00
Peter Grehan
cb87db740e Remove BAT invalidation. This is done later in the boot sequence,
so isn't required here, and seems to cause problems when booting
from disk.

Approved by:  benno
2003-01-22 01:47:05 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Jake Burkholder
7251b4bf93 Resolve relative relocations in klds before trying to parse the module's
metadata.  This fixes module dependency resolution by the kernel linker on
sparc64, where the relocations for the metadata are different than on other
architectures; the relative offset is in the addend of an Elf_Rela record
instead of the original value of the location being patched.
Also fix printf formats in debug code.

Submitted by:	Hartmut Brandt <brandt@fokus.gmd.de>
PR:		46732
Tested on:	alpha (obrien), i386, sparc64
2003-01-21 02:42:44 +00:00
Andrew Gallatin
87c48ca382 include cdefs.h so as to unbreak the libc build 2003-01-20 22:05:39 +00:00
Peter Grehan
8a7f89713e Removed unnecessary includes and brought up to date with ata
common code by adding lock functions.
2003-01-18 11:46:50 +00:00
Peter Grehan
f48649e525 Stub profile.h, required for userland builds.
Approved by:  Benno
2003-01-18 11:31:58 +00:00
Peter Grehan
4e84a94d6b <machine/ieee.h>, taken from sparc64
Approved by:  Benno
2003-01-18 11:30:59 +00:00
Peter Grehan
8e9238c604 Fix bugs with operand ordering and unnecessary sync/eieio ops. Mostly
obtained from Alpha atomic.h

Approved by:  Benno
2003-01-18 11:28:36 +00:00
Peter Grehan
add0e67094 Allow the MD frame definition to be seen in. Required for truss/ptrace.
Approved by:  Benno
2003-01-18 11:25:21 +00:00
Peter Grehan
5cbdd8139a RAIDframe requires LONG_BIT
Approved by:  Benno
2003-01-18 11:23:42 +00:00
Peter Grehan
0a9b03cb65 Prepended underscores to macro local vars, avoiding gcc "declaration
shadows global" warning

Approved by:  benno
2003-01-18 11:20:06 +00:00
Peter Grehan
0212856f3c Change definition of int64 to avoid gcc3.2.1 complaints. Taken from i386
Approved by:  benno
2003-01-18 11:18:42 +00:00
Matthew Dillon
e3669cee72 Merge all the various copies of vm_fault_quick() into a single
portable copy.
2003-01-16 00:02:21 +00:00
Matthew Dillon
f597900329 Merge all the various copies of vmapbuf() and vunmapbuf() into a single
portable copy.  Note that pmap_extract() must be used instead of
pmap_kextract().

This is precursor work to a reorganization of vmapbuf() to close remaining
user/kernel races (which can lead to a panic).
2003-01-15 23:54:35 +00:00
Benno Rice
e9a0b8260e Correct an off-by-one error in the calculation of the number of interrupt
resources we're managing.
2003-01-13 03:24:07 +00:00
Benno Rice
f13d93ce55 Make ofw_pci_find_node() use the reg property instead of the
assigned-addresses property. This works a lot better.
2003-01-09 12:24:19 +00:00
Benno Rice
a65a280612 Add a pcib variant to allow us to fix up interrupt assignments.
We probably want to do something wrt bus enumeration as well at some point.
2003-01-09 12:04:18 +00:00
Benno Rice
3599b2baf7 Allocate interrupts from the resource list. 2003-01-09 09:15:42 +00:00
Benno Rice
30081705c6 - Remove the ignore list and replace it with a quirk list of sorts.
- Add a quirk type for devices whose interrupt properties are actually
  attached to their children.
- Flag the "escc" (zs-alike serial controller) device as having this quirk.
- Rework the interrupt discovery code to deal with devices that have more than
  one interrupt.
2003-01-09 06:21:42 +00:00
Peter Grehan
1fbe1353ad - remove unneeded includes
- fix big in use of rid for SYS_RES_IRQ
- catch up with ATA common code by adding lock function
2003-01-09 01:22:30 +00:00
Peter Grehan
a5bd7d2982 Remove obsolete GEOM option, and bring diskless options up-to-date
Approved by:  benno
2003-01-09 01:09:41 +00:00
Peter Grehan
7d13e76928 Add page queues locking to vunmapbuf().
Obtained from: sparc64
Approved by:  benno
2003-01-08 12:29:59 +00:00
Peter Grehan
d2e30522fe Sync the i-cache after copying down the interrupt code
Approved by:  benno
2003-01-08 12:27:47 +00:00
Peter Grehan
9e283cf9a2 Be more conservative about re-enabling interrupts during trap processing
until atomic issues are fully sorted.

Approved by:  benno
2003-01-08 12:20:46 +00:00
Peter Grehan
b744fccd8a Fix incorrect error returns and sign-extension.
Approved by:  benno
2003-01-08 12:19:37 +00:00