Commit Graph

1069 Commits

Author SHA1 Message Date
Jeff Roberson
8d511e2a05 - Add support for saving stack traces and displaying them via printf(9)
and KTR.

Contributed by:		Antoine Brodin <antoine.brodin@laposte.net>
Concept code from:	Neal Fachan <neal@isilon.com>
2005-08-03 04:27:40 +00:00
Peter Grehan
ebc2aa7496 Temporary band-aid to fix hang when a process exec's Altivec instructions.
trap_subr.S:  declare a stub for the a-unavailable trap
              that does an absolute jump to the vector-assist trap.
              This is due to the fact that the vec-unavail trap
              doesn't start at a 256-byte boundary, so the trick of
              masking the bottom 8 bits of the link register to identify
              the interrupt doesn't work, so let the vec-assist
              case handle Altivec-disabled for the time being.

              Note that this will be fixed in the future with a much
              smaller vector code-stub (< 16 bytes) that will allow
              use of strange vector offsets that are also present in
              4xx processors, and also allow smaller differences in
              vector codepaths on the G5.

trap.c:       Treat altivec-unavailable/assist process traps as SIGILL.
              Not quite correct, since altivec-assist should really be a panic,
              but it is fine for the moment due to the above measure.

machdep.c     Install the stub code for the altivec-unavailable trap, and
              the standard trap code at the altivec-assist.

Reported by:	Andreas Tobler <toa at pop agri ch>
MFC after:	3 days
2005-07-30 11:14:31 +00:00
John Baldwin
122eceef61 Convert the atomic_ptr() operations over to operating on uintptr_t
variables rather than void * variables.  This makes it easier and simpler
to get asm constraints and volatile keywords correct.

MFC after:	3 days
Tested on:	i386, alpha, sparc64
Compiled on:	ia64, powerpc, amd64
Kernel toolchain busted on:	arm
2005-07-15 18:17:59 +00:00
Ken Smith
22e59cec3b Add recently invented COMPAT_FREEBSD5 option.
MFC after:	3 days
2005-07-14 15:39:06 +00:00
David Xu
740fd64d65 Validate if the value written into {FS,GS}.base is a canonical
address, writting non-canonical address can cause kernel a panic,
by restricting base values to 0..VM_MAXUSER_ADDRESS, ensuring
only canonical values get written to the registers.

Reviewed by: peter, Josepha Koshy < joseph.koshy at gmail dot com >
Approved by: re (scottl)
2005-07-10 23:31:11 +00:00
Peter Grehan
968b81b9cd The nsegs parameter to bus_dmamap_load_mbuf_sg is not required to
be set to 0 on input. This caused a panic in an an MP test version
of the GEM driver from Marius, and from inspection of other PCI
drivers, the same problem would happen there.
 Fix by explicitly setting to 0.

Approved by:   re
2005-07-09 06:53:52 +00:00
David E. O'Brien
c3e0dfa1f8 Add .cvsignore files just like in sys/<arch>/compiled, this keeps CVS from
questing kernel config files not in CVS.

Approved by:	re(kensmith)
2005-06-20 16:52:59 +00:00
Joseph Koshy
89ec08eebf Unbreak the PowerPC GENERIC build.
Reviewed by:	delphij
2005-06-11 10:59:02 +00:00
Alan Cox
1c245ae7d1 Introduce a procedure, pmap_page_init(), that initializes the
vm_page's machine-dependent fields.  Use this function in
vm_pageq_add_new_page() so that the vm_page's machine-dependent and
machine-independent fields are initialized at the same time.

Remove code from pmap_init() for initializing the vm_page's
machine-dependent fields.

Remove stale comments from pmap_init().

Eliminate the Boolean variable pmap_initialized from the alpha, amd64,
i386, and ia64 pmap implementations.  Its use is no longer required
because of the above changes and earlier changes that result in physical
memory that is being mapped at initialization time being mapped without
pv entries.

Tested by: cognet, kensmith, marcel
2005-06-10 03:33:36 +00:00
Joseph Koshy
f263522a45 MFP4:
- Implement sampling modes and logging support in hwpmc(4).

- Separate MI and MD parts of hwpmc(4) and allow sharing of
  PMC implementations across different architectures.
  Add support for P4 (EMT64) style PMCs to the amd64 code.

- New pmcstat(8) options: -E (exit time counts) -W (counts
  every context switch), -R (print log file).

- pmc(3) API changes, improve our ability to keep ABI compatibility
  in the future.  Add more 'alias' names for commonly used events.

- bug fixes & documentation.
2005-06-09 19:45:09 +00:00
Marcel Moolenaar
470cd51ee6 Create nexus in configure_first() instead of in configure(). This
makes sure that sysinit tasks that run after configure_first(),
but before configure() have a nexus to hang devices off.
2005-05-29 23:44:22 +00:00
Marcel Moolenaar
ba64ae0c94 Call cninit_finish() from configure_final(). 2005-05-29 22:53:48 +00:00
Peter Grehan
3b7b274ae1 The end values passed to rman_manage_region() for PCI i/o and mem
spaces were 1 too large. This resulted in the rman list not being
sorted correctly, and USB ports not being discovered on older
TiBooks.

Detective work by:   Andreas Tobler <toa at pop dot agri dot ch>
2005-05-29 08:51:21 +00:00
Yoshihiro Takahashi
d4fcf3cba5 Remove bus_{mem,p}io.h and related code for a micro-optimization on i386
and amd64.  The optimization is a trivial on recent machines.

Reviewed by:	-arch (imp, marcel, dfr)
2005-05-29 04:42:30 +00:00
Peter Grehan
bd8fa19da3 Quick hack-o-rama to allow the Xorg Radeon driver to start up. It
tries to mmap memory outside of the available BARs, so allow the
range checks to be relaxed with a sysctl.
2005-05-21 00:22:57 +00:00
Peter Grehan
edaccfc8bb Remove incorrect configuration setting that limited the Kauai ATA controller
to be master-only. The slave ATAPI drive on the Mac-Mini is now recognised.
2005-05-14 02:11:45 +00:00
Peter Grehan
c2399f7a3f - move to SCHED_4BSD per jeffr's comments on SCHED_ULE's state
- enable MSDOSFS
- ehci is stable on the powerbook
- modules have been working for a long time.
2005-05-03 11:56:05 +00:00
Peter Grehan
6ac8f17ee4 Catch up with latest ATA newbus commits. 2005-05-01 13:11:29 +00:00
David Xu
21fc316430 Change cpu_set_kse_upcall to more generic style, so we can reuse it
in other codes. Add cpu_set_user_tls, use it to tweak user register
and setup user TLS. I ever wanted to merge it into cpu_set_kse_upcall,
but since cpu_set_kse_upcall is also used by M:N threads which may
not need this feature, so I wrote a separated cpu_set_user_tls.
2005-04-23 02:32:32 +00:00
Paul Saab
8cb038b4b2 Don't enter the debugger if KDB_UNATTENDED is set or if
debug.debugger_on_panic=0.

MFC after:	2 weeks
2005-04-20 20:52:46 +00:00
Marcel Moolenaar
ff7125a623 Add empty header (except of the multiple-inclusion protection) to
get hwpmc(4) to compile on this platform.
2005-04-20 18:44:53 +00:00
Peter Grehan
a378bbabe6 Get order right when initializing task file bus resources. ATA drives are
now recognised when booting from the drive, as opposed to net-booting which
the previous botched commit was tested with.
2005-04-20 02:26:31 +00:00
Warner Losh
06db52b609 Break out the definition of bus_space_{tag,handle}_t and a few other types
into _bus.h to help with name space polution from including all of bus.h.
In a few days, I'll commit changes to the MI code to take advantage of thse
sepration (after I've made sure that these changes don't break anything in
the main tree, I've tested in my trees, but you never know...).

Suggested by: bde (in 2002 or 2003 I think)
Reviewed in principle by: jhb
2005-04-18 21:45:34 +00:00
Peter Grehan
5a276744c0 Catch up with ATA mkIII definitions for registers that have different
functions for read vs. write.
2005-04-18 04:23:23 +00:00
John Baldwin
aa9aa68d2f Use PCPU_LAZY_INC() for cnt.v_{intr,trap,syscalls} rather than atomic
operations in some places and simple non-per CPU math in others.
2005-04-12 23:18:54 +00:00
Suleiman Souhlal
db81b64fc4 Unbreak the powerpc build by fixing some ATA constants that were renamed.
Approved by:	grehan (mentor)
2005-04-12 15:59:54 +00:00
John Baldwin
4d9ae2662a Change an instance of md_savecrit to md_saved_msr that I missed. 2005-04-08 14:26:55 +00:00
John Baldwin
c6a37e8413 Divorce critical sections from spinlocks. Critical sections as denoted by
critical_enter() and critical_exit() are now solely a mechanism for
deferring kernel preemptions.  They no longer have any affect on
interrupts.  This means that standalone critical sections are now very
cheap as they are simply unlocked integer increments and decrements for the
common case.

Spin mutexes now use a separate KPI implemented in MD code: spinlock_enter()
and spinlock_exit().  This KPI is responsible for providing whatever MD
guarantees are needed to ensure that a thread holding a spin lock won't
be preempted by any other code that will try to lock the same lock.  For
now all archs continue to block interrupts in a "spinlock section" as they
did formerly in all critical sections.  Note that I've also taken this
opportunity to push a few things into MD code rather than MI.  For example,
critical_fork_exit() no longer exists.  Instead, MD code ensures that new
threads have the correct state when they are created.  Also, we no longer
try to fixup the idlethreads for APs in MI code.  Instead, each arch sets
the initial curthread and adjusts the state of the idle thread it borrows
in order to perform the initial context switch.

This change is largely a big NOP, but the cleaner separation it provides
will allow for more efficient alternative locking schemes in other parts
of the kernel (bare critical sections rather than per-CPU spin mutexes
for per-CPU data for example).

Reviewed by:	grehan, cognet, arch@, others
Tested on:	i386, alpha, sparc64, powerpc, arm, possibly more
2005-04-04 21:53:56 +00:00
Peter Grehan
98cbfce5db Introduce channel-level setmode newbus method.
Thanks to sos for the code re-org that allowed this.
2005-04-01 03:28:55 +00:00
Peter Grehan
05a016a3e1 Catch up with ATA-mkIII 2005-03-31 01:57:51 +00:00
Maxim Sobolev
6bcf003260 Add USB Communication Device Class Ethernet driver. Originally written for
FreeBSD based on aue(4) it was picked by OpenBSD, then from OpenBSD ported
to NetBSD and finally NetBSD version merged with original one goes into
FreeBSD.

Obtained from:  http://www.gank.org/freebsd/cdce/
                NetBSD
                OpenBSD
2005-03-22 14:52:40 +00:00
Peter Grehan
eb1c12f028 Optimize putc routine to write 2 ints instead of 8 chars to uncached
framebuffer memory. Speeds up system time of large ascii file cat
by 4x.

Inspired by:  Linux scrolling so damned fast.
2005-03-19 01:43:29 +00:00
Murray Stokely
991f5121f0 Add a comment to note that pseudo-device bpf is required for DHCP.
This is mentioned in the Handbook but it is not as obvious to new
users why bpf is needed compared to the other largely self-explanatory
items in GENERIC.

PR:		conf/40855
MFC after:	1 week
2005-03-18 15:24:00 +00:00
Peter Grehan
b1fab0ffc0 Split configure into 3 steps ala sparc64
Obtained from:  iedowse, sparc64
2005-03-18 03:29:39 +00:00
Peter Grehan
01b7183fdd Prepend underscore to bus_dmamap_{unload|sync} in line with
recent busdma changes.
2005-03-15 11:43:05 +00:00
Peter Grehan
bc54a0234a Include <sys/signalvar.h> for trapsignal prototype. 2005-03-15 11:41:55 +00:00
Peter Grehan
c10763d40c Long overdue sync-up with ATA code 2005-03-15 11:41:05 +00:00
Scott Long
5974e5c71c Refactor the bus_dma header files so that the interface is described in
sys/bus_dma.h instead of being copied in every single arch.  This slightly
reorders a flag that was specific to AXP and thus changes the ABI there.
The interface still relies on bus_space definitions found in <machine/bus.h>
so it cannot be included on its own yet, but that will be fixed at a later
date.  Add an MD <machine/bus_dma.h> for ever arch for consistency and to
allow for future MD augmentation of the API.  sparc64 makes heavy use of
this right now due to its different bus_dma implemenation.
2005-03-14 16:46:28 +00:00
Peter Grehan
b0c2130963 Replaced previous hw.physmem extraction with des's mods to
getenv_ulong() - much simpler.

Pointed out by:	des
2005-03-07 07:31:20 +00:00
Peter Grehan
e38509dc05 physmem is a much better indicator for 'real' memory on PPC than Maxmem
since there are often significant holes in the memory map due to the
kernel, loader and OFW data structures not being included: Maxmem is
the highest available, so can be misleading.
2005-03-07 01:52:24 +00:00
Peter Grehan
e2f6d6e28a Allow user to undersize memory with hw.physmem loader variable.
Obtained from:  i386/machdep.c:getmemsize()
2005-03-07 01:46:06 +00:00
Joerg Wunsch
a5f50ef9e4 netchild's mega-patch to isolate compiler dependencies into a central
place.

This moves the dependency on GCC's and other compiler's features into
the central sys/cdefs.h file, while the individual source files can
then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to
refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42.

By now, GCC and ICC (the Intel compiler) have been actively tested on
IA32 platforms by netchild.  Extension to other compilers is supposed
to be possible, of course.

Submitted by:	netchild
Reviewed by:	various developers on arch@, some time ago
2005-03-02 21:33:29 +00:00
Peter Grehan
8c8cb52737 Catch up with "physical memory" sysctl change.
(MFi386: rev 1.608)
2005-03-01 07:59:24 +00:00
Peter Grehan
0dab19853f Catch the case where the idle loop is entered with interrupts disabled,
causing a hard hang.
2005-02-28 09:49:00 +00:00
Peter Grehan
4d4b91ac81 - switch pcpu to a struct declaration ala amd64. It may be more efficient to
cache-align this struct, but that's a topic for a far-in-the-future
  commit.
- eliminate commented-out reference to a non-existent pcpu field.
2005-02-28 08:47:51 +00:00
Peter Grehan
847b0d7551 Correctly set kernelname for kern.bootfile sysctl
Noticed by:	gad
Code stolen from: sparc64
2005-02-28 07:14:13 +00:00
Peter Grehan
4dba5df19d Add PVO_FAKE flag to pvo entries for PG_FICTITIOUS mappings, to
avoid trying to reverse-map a device physical address to the
vm_page array and walking into non-existent vm weeds.

found by:  Xorg server exiting
2005-02-25 02:42:15 +00:00
Peter Grehan
b4ac36978f Mods for Xorg server:
- store assigned PCI addresses at cninit time for later mmap range
   check
 - implement set_border to scrub X remnants when switching back to VTYs
 - implement mmap, only allowing addresses within the range of the
   console adapter.
2005-02-25 02:29:01 +00:00
Ruslan Ermilov
3971d2cf5e Use a common multi-inclusion protection, and add such a
protection to alpha/include/exec.h.
2005-02-19 21:16:48 +00:00
Nate Lawson
3888a87205 Finish the job of sorting all includes and fix the build by including
malloc.h before proc.h on sparc64.  Noticed by das@

Compiled on:	alpha, amd64, i386, pc98, sparc64
2005-02-06 01:55:08 +00:00
Nate Lawson
a287c0ffaf Sort includes a little so that bus.h comes before cpu.h (for device_t). 2005-02-04 06:58:09 +00:00
Nate Lawson
4c4381e288 Add an implementation of cpu_est_clockrate(9). This function estimates the
current clock frequency for the given CPU id in units of Hz.
2005-02-04 05:32:56 +00:00
Peter Grehan
79393893e8 - recognize 7447A/7448 CPUs (used in miniMacs)
- enable 745x branch caches. Already enabled by OpenFirmware
on Macs, but reduces NetBSD diffs and usable by embedded folk.

Obtained from:	NetBSD
2005-02-04 01:59:48 +00:00
Peter Grehan
6d2d8acaf4 - add wall_cmos_clock and adjkerntz variables, required by msdosfs
- support adjkerntz sysctl to silence NTP, though it's a null
  implementation at the moment.
2005-02-04 01:41:38 +00:00
Peter Grehan
911e488a03 Convert bus_space_barrier() into a null inline function rather than an
empty macro to avoid many compile warnings in the USB code.
2005-02-04 01:27:21 +00:00
Peter Grehan
4e895c543a - add definitions for MPC7447A/7448 (i.e. miniMac)
- expand MPC745X_P macro to include these

Obtained from:	NetBSD
2005-02-04 01:17:04 +00:00
Peter Grehan
9e8e140099 HID0 updates:
- updated relevant models for High BAT enable bit
 - fixed bug in BHTCLR/XAEN constants
 - added LRSTK and FOLD bits
2005-02-04 01:14:38 +00:00
Peter Grehan
70134d768c - change all u_int_XX to uint_XX
- cast param for atomic_subtract_long, since Netgraph uses it.
2005-02-01 11:17:24 +00:00
Peter Grehan
94aa7aecdf Fix (accidental?) lock order reversal in pmap_remove. Found when
a process that has mmap'd device mem exits.
2005-01-21 01:02:38 +00:00
Scott Long
9751303e1c Add bus_dmamap_load_mbuf_sg() to powerpc. 2005-01-15 19:55:25 +00:00
John Baldwin
f4ef9cec40 - Remove some OBE comments regarding cpu_exit(). cpu_exit() is no longer
the last action of kern_exit().  Instead, it is a MD callout to cleanup
  per-process state during exit.
- Add notes of concern to Alpha and ia64 about the possible need to drop
  fp state in cpu_thread_exit() rather than in cpu_exit() since it is
  per-thread state rather than per-process.
2005-01-14 20:13:04 +00:00
Peter Grehan
739211f027 - allow a device hint to disable probing a slot on a Uninorth PCI bus.
e.g. at the loader:

	set hint.pcib.1.skipslot=26

  This allows undocumented and problematic hardware on some systems
  to be ignored, for instance, the USB keyboard/mouse that shows up
  on a 12" albook that doesn't exist nor do anything other than eat up
  the syscons keyboard. Another one is the unused USB cell in the old
  366MHz iBook that locks up the machine when probed.

  In a way this is temporary, since there are better fixes for the
  above problems, but will be useful in the meantime by allowing
  a keyboard to be used to help debug said fixes :)

- while here remove some trailing white space
2005-01-11 08:09:50 +00:00
Warner Losh
60727d8b86 /* -> /*- for license, minor formatting changes 2005-01-07 02:29:27 +00:00
Peter Grehan
dac7b54d87 Return correct value in the lock routine. 2005-01-07 01:08:39 +00:00
Peter Grehan
22f2fe59b9 Correctly initialise the 2nd kernel segment, and don't
forget to actually install it in the segment register.
This may fix some of the weird panics seen when kernel VM
is heavily used.
2004-12-29 09:41:40 +00:00
Alan Cox
1f70d62298 Modify pmap_enter_quick() so that it expects the page queues to be locked
on entry and it assumes the responsibility for releasing the page queues
lock if it must sleep.

Remove a bogus comment from pmap_enter_quick().

Using the first change, modify vm_map_pmap_enter() so that the page queues
lock is acquired and released once, rather than each time that a page
is mapped.
2004-12-23 20:16:11 +00:00
Alan Cox
85f5b24573 In the common case, pmap_enter_quick() completes without sleeping.
In such cases, the busying of the page and the unlocking of the
containing object by vm_map_pmap_enter() and vm_fault_prefault() is
unnecessary overhead.  To eliminate this overhead, this change
modifies pmap_enter_quick() so that it expects the object to be locked
on entry and it assumes the responsibility for busying the page and
unlocking the object if it must sleep.  Note: alpha, amd64, i386 and
ia64 are the only implementations optimized by this change; arm,
powerpc, and sparc64 still conservatively busy the page and unlock the
object within every pmap_enter_quick() call.

Additionally, this change is the first case where we synchronize
access to the page's PG_BUSY flag and busy field using the containing
object's lock rather than the global page queues lock.  (Modifications
to the page's PG_BUSY flag and busy field have asserted both locks for
several weeks, enabling an incremental transition.)
2004-12-15 19:55:05 +00:00
Peter Grehan
0cff393761 Create a new definition, PSL_KERNSET, which is used for setting the
MSR in kernel mode. Redefine PSL_USERSET in terms of this by or'ing
in PSL_PR.
2004-11-30 09:04:41 +00:00
David Schultz
6004362e66 Don't include sys/user.h merely for its side-effect of recursively
including other headers.
2004-11-27 06:51:39 +00:00
David Schultz
ab44ebf537 Remove UAREA_PAGES.
Reviewed by:	arch@
2004-11-20 02:29:50 +00:00
David Schultz
11111b709f U areas are going away, so don't allocate one for process 0.
Reviewed by:	arch@
2004-11-20 02:29:25 +00:00
David Schultz
ff3fd2e764 user.h is included only to get pcb.h, so use the latter directly instead. 2004-11-20 02:28:14 +00:00
Andre Oppermann
32672ba88d Reduce annoying SCSI probing delay from 15 to 5 seconds in all GENRIC kernels.
Discussed on:	-current
2004-11-02 20:57:20 +00:00
Suleiman Souhlal
6c2a9753f2 Implement TLS relocations for powerpc.
Approved by:	grehan (mentor)
2004-11-02 09:47:01 +00:00
Suleiman Souhlal
899fe90939 Stay up to date with the latest ATA developments, where
ata_channel.locking now returns an int.

Approved by:	grehan (mentor)
2004-11-02 09:29:31 +00:00
Suleiman Souhlal
400a0a2395 Uncomment options _KPOSIX_PRIORITY_SCHEDULING as it is enabled in the
other architectures, and does not give any problems.

Approved by:	grehan (mentor)
2004-11-02 09:06:48 +00:00
John Baldwin
d39d4a6e64 - Change the ddb paging "support" to use a variable (db_lines_per_page) to
control the number of lines per page rather than a constant.  The variable
  can be examined and changed in ddb as '$lines'.  Setting the variable to
  0 will effectively turn off paging.
- Change db_putchar() to force out pending whitespace before outputting
  newlines and carriage returns so that one can rub out content on the
  current line via '\r     \r' type strings.
- Change the simple pager to rub out the --More-- prompt explicitly when
  the routine exits.
- Add some aliases to the simple pager to make it more compatible with
  more(1): 'e' and 'j' do a single line.  'd' does half a page, and
  'f' does a full page.

MFC after:	1 month
Inspired by:	kris
2004-11-01 22:15:15 +00:00
Andrew Gallatin
e237071f1a Add sc_iostart to softc and unbreak the build.
This was forgotten in my previous commit to add i/o port to uninorth.c

Pointy-hat to: me
2004-09-27 19:51:58 +00:00
Andrew Gallatin
714aa5b939 Add support for i/o-ports. This was cut and pasted from grackle.c 2004-09-26 01:56:20 +00:00
John Baldwin
76764432e4 - Add support for "paging" in stack trace output. That is, when you do
a stack trace from ddb, the output will pause with a '--More--' prompt
  every 18 lines.  If you hit Enter, it will print another line and prompt
  again.  If you hit space it will output another page and then prompt.
  If you hit 'q' or 'x' it will abort the rest of the stack trace.
- Fix the sparc64 userland stack trace to honor the total count of lines
  to print.  This is useful if your trace happens to walk back onto
  0xdeadc0de and gets stuck in an endless loop.

MFC after:	1 month
Tested on:	i386, alpha, sparc64
2004-09-20 19:05:32 +00:00
Alan Cox
4711f8d71d Lock the kernel pmap in pmap_kenter().
Tested by: gallatin@
2004-09-13 20:36:01 +00:00
Scott Long
50736a153b Fix a problem with tag->boundary inheritence that has existed since day one
and was propagated to nearly every platform.  The boundary of the child needs
to consider the boundary of the parent and pick the minimum of the two, not
the maximum.  However, if either is 0 then pick the appropriate one.
This bug was exposed by a recent change to ATA, which should now be fixed by
this change.  The alignment and maxsegsz tag attributes likely also need
a similar review in the near future.

This is a MT5 candidate.

Reviewed by: marcel
Submitted by: sos (in part)
2004-09-08 04:54:19 +00:00
Julian Elischer
ed062c8d66 Refactor a bunch of scheduler code to give basically the same behaviour
but with slightly cleaned up interfaces.

The KSE structure has become the same as the "per thread scheduler
private data" structure. In order to not make the diffs too great
one is #defined as the other at this time.

The KSE (or td_sched) structure is  now allocated per thread and has no
allocation code of its own.

Concurrency for a KSEGRP is now kept track of via a simple pair of counters
rather than using KSE structures as tokens.

Since the KSE structure is different in each scheduler, kern_switch.c
is now included at the end of each scheduler. Nothing outside the
scheduler knows the contents of the KSE (aka td_sched) structure.

The fields in the ksegrp structure that are to do with the scheduler's
queueing mechanisms are now moved to the kg_sched structure.
(per ksegrp scheduler private data structure). In other words how the
scheduler queues and keeps track of threads is no-one's business except
the scheduler's. This should allow people to write experimental
schedulers with completely different internal structuring.

A scheduler call sched_set_concurrency(kg, N) has been added that
notifies teh scheduler that no more than N threads from that ksegrp
should be allowed to be on concurrently scheduled. This is also
used to enforce 'fainess' at this time so that a ksegrp with
10000 threads can not swamp a the run queue and force out a process
with 1 thread, since the current code will not set the concurrency above
NCPU, and both schedulers will not allow more than that many
onto the system run queue at a time. Each scheduler should eventualy develop
their own methods to do this now that they are effectively separated.

Rejig libthr's kernel interface to follow the same code paths as
linkse for scope system threads. This has slightly hurt libthr's performance
but I will work to recover as much of it as I can.

Thread exit code has been cleaned up greatly.
exit and exec code now transitions a process back to
'standard non-threaded mode' before taking the next step.
Reviewed by:	scottl, peter
MFC after:	1 week
2004-09-05 02:09:54 +00:00
Julian Elischer
5995adc206 Remove an unneeded argument..
The removed argument could trivially be derived from the remaining one.
That in turn should be the same as curthread, but it is possible that curthread could be expensive to derive on some syste,s so leave it as an argument.
Having both proc and thread as an argumen tjust gives an opportunity for
them to get out sync.

MFC after:	3 days
2004-08-31 07:34:54 +00:00
Julian Elischer
99e9dcb817 Remove sched_free_thread() which was only used
in diagnostics. It has outlived its usefulness and has started
causing panics for people who turn on DIAGNOSTIC, in what is otherwise
good code.

MFC after:	2 days
2004-08-31 06:12:13 +00:00
Alan Cox
f489bf21ec - Introduce a lock for synchronizing access to the pvo and pteg tables.
- In pmap_enter(), only the acquisition and release of the page queues
   lock needs to check the bootstrap flag.

Tested by: gallatin@
2004-08-30 21:39:22 +00:00
Alan Cox
c3d11d22be Eliminate unnecessary indirection. 2004-08-28 20:27:12 +00:00
Marcel Moolenaar
0f2fe153bc Move the kernel-specific logic to adjust frompc from MI to MD. For
these two reasons:
1. On ia64 a function pointer does not hold the address of the first
   instruction of a functions implementation. It holds the address
   of a function descriptor. Hence the user(), btrap(), eintr() and
   bintr() prototypes are wrong for getting the actual code address.
2. The logic forces interrupt, trap and exception entry points to
   be layed-out contiguously. This can not be achieved on ia64 and is
   generally just bad programming.

The MCOUNT_FROMPC_USER macro is used to set the frompc argument to
some kernel address which represents any frompc that falls outside
the kernel text range. The macro can expand to ~0U to bail out in
that case.
The MCOUNT_FROMPC_INTR macro is used to set the frompc argument to
some kernel address to represent a call to a trap or interrupt
handler. This to avoid that the trap or interrupt handler appear to
be called from everywhere in the call graph. The macro can expand
to ~0U to prevent adjusting frompc. Note that the argument is selfpc,
not frompc.

This commit defines the macros on all architectures equivalently to
the original code in sys/libkern/mcount.c. People can take it from
here...

Compile-tested on: alpha, amd64, i386, ia64 and sparc64
Boot-tested on: i386
2004-08-27 19:42:35 +00:00
Andre Oppermann
c21fd23260 Always compile PFIL_HOOKS into the kernel and remove the associated kernel
compile option.  All FreeBSD packet filters now use the PFIL_HOOKS API and
thus it becomes a standard part of the network stack.

If no hooks are connected the entire packet filter hooks section and related
activities are jumped over.  This removes any performance impact if no hooks
are active.

Both OpenBSD and DragonFlyBSD have integrated PFIL_HOOKS permanently as well.
2004-08-27 15:16:24 +00:00
Alan Cox
48d0b1a0dc Add pmap locking to many of the functions.
Many thanks to Andrew Gallatin for resolving a powerpc-specific
initialization problem in my original patch.

Tested by: gallatin@
2004-08-26 04:15:36 +00:00
Marius Strobl
39513fa664 Instead of "OpenFirmware", "openfirmware", etc. use the official spelling
"Open Firmware" from IEEE 1275 and OpenFirmware.org (no pun intended).

Ok'ed by:	tmm
2004-08-16 15:45:27 +00:00
Suleiman Souhlal
c0763d3763 Add /dev/mem and /dev/kmem to powerpc.
Approved by:	grehan (mentor)
2004-08-16 13:07:40 +00:00
Peter Grehan
dbc13869ee Advertise that color is supported so that syscons doesn't come up
in monochrome mode when run as init.
2004-08-16 06:26:15 +00:00
Marius Strobl
26280d88d7 - Introduce an ofw_bus kobj-interface for retrieving the OFW node and a
subset ("compatible", "device_type", "model" and "name") of the standard
  properties in drivers for devices on Open Firmware supported busses. The
  standard properties "reg", "interrupts" und "address" are not covered by
  this interface because they are only of interest in the respective bridge
  code. There's a remaining standard property "status" which is unclear how
  to support properly but which also isn't used in FreeBSD at present.
  This ofw_bus kobj-interface allows to replace the various (ebus_get_node(),
  ofw_pci_get_node(), etc.) and partially inconsistent (central_get_type()
  vs. sbus_get_device_type(), etc.) existing IVAR ones with a common one.
  This in turn allows to simplify and remove code-duplication in drivers for
  devices that can hang off of more than one OFW supported bus.
- Convert the sparc64 Central, EBus, FHC, PCI and SBus bus drivers and the
  drivers for their children to use the ofw_bus kobj-interface. The IVAR-
  interfaces of the Central, EBus and FHC are entirely replaced by this. The
  PCI bus driver used its own kobj-interface and now also uses the ofw_bus
  one. The IVARs special to the SBus, e.g. for retrieving the burst size,
  remain.
  Beware: this causes an ABI-breakage for modules of drivers which used the
  IVAR-interfaces, i.e. esp(4), hme(4), isp(4) and uart(4), which need to be
  recompiled.
  The style-inconsistencies introduced in some of the bus drivers will be
  fixed by tmm@ in a generic clean-up of the respective drivers later (he
  requested to add the changes in the "new" style).
- Convert the powerpc MacIO bus driver and the drivers for its children to
  use the ofw_bus kobj-interface. This invloves removing the IVARs related
  to the "reg" property which were unused and a leftover from the NetBSD
  origini of the code. There's no ABI-breakage caused by this because none
  of these driver are currently built as modules.
  There are other powerpc bus drivers which can be converted to the ofw_bus
  kobj-interface, e.g. the PCI bus driver, which should be done together
  with converting powerpc to use the OFW PCI code from sparc64.
- Make the SBus and FHC front-end of zs(4) and the sparc64 eeprom(4) take
  advantage of the ofw_bus kobj-interface and simplify them a bit.

Reviewed by:	grehan, tmm
Approved by:	re (scottl)
Discussed with:	tmm
Tested with:	Sun AX1105, AXe, Ultra 2, Ultra 60; PPC cross-build on i386
2004-08-12 17:41:33 +00:00
Marius Strobl
a4954466bd - Use the rman_get_* functions instead of reaching into struct resource.
- Remove __RMAN_RESORUCE_VISIBLE again. It's no longer required either
  because of the above change or because struct rman is no longer hidden.

Reviewed by:	grehan
Tested by:	cross-compile on i386
2004-08-11 21:09:40 +00:00
Marcel Moolenaar
4da47b2fec Add __elfN(dump_thread). This function is called from __elfN(coredump)
to allow dumping per-thread machine specific notes. On ia64 we use this
function to flush the dirty registers onto the backingstore before we
write out the PRSTATUS notes.

Tested on: alpha, amd64, i386, ia64 & sparc64
Not tested on: arm, powerpc
2004-08-11 02:35:06 +00:00
Peter Grehan
1a6f777efe Always isync after a mtmsr. While perhaps not strictly necessary for PSL_EE
bit banging according to the OEA, it's better to be conservative than
having to continually audit uses of this inline.
2004-08-07 00:20:00 +00:00
Peter Grehan
2184ddd1f7 In pmap_page_protect, clear the vm page's PG_WRITEABLE flag if
downgrading to read-only. Found by triggering the KASSERT in
vm_pageout_flush().
2004-08-05 12:44:12 +00:00
Alan Cox
684a62b7bf - Push down the acquisition and release of Giant into pmap_enter_quick()
on those architectures without pmap locking.
 - Eliminate the acquisition and release of Giant in vm_map_pmap_enter().
2004-08-04 22:03:16 +00:00
Mark Murray
d23a262fc5 Making a loadable null.ko for /dev/(null|zero) proved rather
unpopular, so remove this (mis)feature.

Encouragement provided by:	jhb (and others)
2004-08-03 19:24:54 +00:00
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