Commit Graph

1302 Commits

Author SHA1 Message Date
John Baldwin
6ad0e7c5cc Create clone'd linux processes as stopped processes at first and don't
actually make them runnable until after the emulator layer has had a chance
to perform fixups.
2001-03-06 02:59:46 +00:00
John Baldwin
1e3592df94 Quiet a warning due to bus_size_t being a long on the alpha. 2001-03-06 02:52:06 +00:00
Andrew Gallatin
c350c330da handle reserved/unimplemented instruction (opDec) faults
This lets us run programs containing newer (eg bwx) instructions
on older (eg EV5 and less) machines.  One win is that we can
now run Acrobat4 on EV4s and EV5s.

Obtained from: NetBSD
Glanced at by: mjacob
2001-03-05 21:21:01 +00:00
Andrew Gallatin
9ccd73f2ee Add MODULE_DEPEND() for the sysvipc modules. This allows the linulator
to load when sysvipc is not in the kernel

Reported by: naddy@mips.inka.de (Christian Weisgerber)
2001-03-05 17:59:18 +00:00
Andrew Gallatin
d905e2f482 sync with i386:
MFS: bring the consistent `compat_3_brand' support

This should fix the linux-related panics reported
by naddy@mips.inka.de (Christian Weisgerber)

Forgotten by: obrien
2001-03-05 17:56:58 +00:00
Andrew Gallatin
f7c3f9d72f Fix the unaligned access code to handle stores from R31 (zero)
PR alpha/25535
2001-03-05 16:18:23 +00:00
Doug Rabson
768a854cad Disable interrupts while sanity checking the owner of the floating point
state. It is possible that we could be preempted part way through the
check.
2001-03-04 23:29:23 +00:00
Doug Rabson
30c190a0aa Account for the new flags field in struct trapframe. 2001-03-03 15:11:37 +00:00
John Baldwin
938f15c7c4 Rename switch_trampoline() to fork_trampoline() on the alpha and ia64.
Suggested by:	dfr
2001-02-22 16:56:53 +00:00
John Baldwin
26f9f5c7c7 - Use TRAPF_PC() on the alpha to acess the PC in the trap frame.
- Don't hold sched_lock around addupc_task() as this apparently breaks
  profiling badly due to sched_lock being held across copyin().

Reported by:	bde (2)
2001-02-22 16:23:12 +00:00
John Baldwin
0246af0995 GC unused and now obsolete assertion macros. 2001-02-22 15:45:49 +00:00
John Baldwin
3621af321e Cleanup and clarify the comments above switch_trampoline(). 2001-02-22 15:06:19 +00:00
John Baldwin
719f43d3df Remove attempt to add in PREEMPTION #ifdef test in MI code that didn't
work because opt_preemption.h wasn't #include'd.  Instead, make use of the
do_switch parameter to ithread_schedule() and do the check in the alpha
interrupt code.
2001-02-21 22:51:00 +00:00
Andrew Gallatin
2b1525e1b5 Fix the osfulator in the face of Doug's optimized system call return path.
We now need to set [FRAME_FLAGS] to zero to force a full restore of state
after a signal.

reported by: naddy@mips.inka.de (Christian Weisgerber)
2001-02-21 18:48:06 +00:00
John Baldwin
3e5da75445 - Add a new ithread_schedule() function to do the bulk of the work of
scheduling an interrupt thread to run when needed.  This has the side
  effect of enabling support for entropy gathering from interrupts on
  all architectures.
- Change the software interrupt and x86 and alpha hardware interrupt code
  to use ithread_schedule() for most of their processing when scheduling
  an interrupt to run.
- Remove the pesky Warning message about interrupt threads having entropy
  enabled.  I'm not sure why I put that in there in the first place.
- Add more error checking for parameters and change some cases that
  returned EINVAL to panic on failure instead via KASSERT().
- Instead of doing a documented evil hack of setting the P_NOLOAD flag
  on every interrupt thread whose pri was SWI_CLOCK, set the flag
  explicity for clk_ithd's proc during start_softintr().
2001-02-20 10:25:29 +00:00
John Baldwin
5813dc03bd - Don't call clear_resched() in userret(), instead, clear the resched flag
in mi_switch() just before calling cpu_switch() so that the first switch
  after a resched request will satisfy the request.
- While I'm at it, move a few things into mi_switch() and out of
  cpu_switch(), specifically set the p_oncpu and p_lastcpu members of
  proc in mi_switch(), and handle the sched_lock state change across a
  context switch in mi_switch().
- Since cpu_switch() no longer handles the sched_lock state change, we
  have to setup an initial state for sched_lock in fork_exit() before we
  release it.
2001-02-20 05:26:15 +00:00
Andrew Gallatin
8859907478 Regen 2001-02-20 03:48:53 +00:00
Andrew Gallatin
c9eeb59a01 Sort out the umount breakage introduced in the last 2 revisions.
Please note:
When committing changes to this file, it is important to note that
linux is not freebsd -- their system call numbers (and sometimes names)
are different on different platforms.  When in doubt (and you always need
to be) check the arch-specific unistd.h and entry.S files in the linux
kernel sources to see what the syscall numbers really are.
2001-02-20 03:47:59 +00:00
Jonathan Lemon
203e686755 Regenerate. 2001-02-20 02:16:38 +00:00
Jonathan Lemon
6de4a7300a Fix duplicate linux_mount definition 2001-02-20 02:16:07 +00:00
Bruce Evans
866546105a Changed the aston() family to operate on a specified process instead of
always on curproc.  This is needed to implement signal delivery properly
(see a future log message for kern_sig.c).

Debogotified the definition of aston().  aston() was defined in terms
of signotify() (perhaps because only the latter already operated on
a specified process), but aston() is the primitive.

Similar changes are needed in the ia64 versions of cpu.h and trap.c.
I didn't make them because the ia64 is missing the prerequisite changes
to make astpending and need_resched per-process and those changes are
too large to make without testing.
2001-02-19 04:15:59 +00:00
Hajimu UMEMOTO
e335205699 Correct disordering which is corresponding to bde's fix to
i386/include/ansi.h.
2001-02-17 14:51:11 +00:00
Jonathan Lemon
2459336973 Allow debugging output to be controlled on a per-syscall granularity.
Also clean up debugging output in a slightly more uniform fashion.

The default behavior remains the same (all debugging output is turned on)
2001-02-16 16:40:43 +00:00
Jonathan Lemon
a25f3493bc Re-gen auto generated files. 2001-02-16 14:47:24 +00:00
Jonathan Lemon
3417b54986 Remove dummy stub functions. 2001-02-16 14:46:16 +00:00
Jonathan Lemon
705deb78a3 Add mount syscall to linux emulation. Also improve emulation of reboot. 2001-02-16 14:42:11 +00:00
Hajimu UMEMOTO
ad9fdc8f4d Correct 2nd argument of getnameinfo(3) to socklen_t.
Reviewed by:	itojun
2001-02-15 10:35:55 +00:00
Matt Jacob
888620f24e Doug found that doing a W1C on MCPCIA_INT_REQ just around the time you
clear MCPCIA_INT_MASK0 helps things substantially. So, why not indeed?

Rearrange irq and cookie calculation to use shifts/masks instead
of division. Fix things to correctly remember the intpin for that
one in a million non-INTA PCI device.
2001-02-13 22:48:12 +00:00
Matt Jacob
d2a4644848 add defines for EISA, NCR IRQs; add defines for MID and SLOT shift values 2001-02-13 22:46:30 +00:00
Matt Jacob
e3981f1a78 add mcbus minimum id value 2001-02-13 22:45:53 +00:00
Matt Jacob
fcd34891a6 Doug noticed that the bit values for _MCPCIA_INT_ACK0/_MCPCIA_INT_ACK1
made no sense in the context of wrapping them within the _SYBRIDGE macro-
or anything like it- so we concluded that this must have been a typo
in the docs.  This also doesn't use the same bridge offset as anything
else.

Add some defines for the INT_CTL register.
2001-02-13 22:44:21 +00:00
Jake Burkholder
d5a08a6065 Implement a unified run queue and adjust priority levels accordingly.
- All processes go into the same array of queues, with different
  scheduling classes using different portions of the array.  This
  allows user processes to have their priorities propogated up into
  interrupt thread range if need be.
- I chose 64 run queues as an arbitrary number that is greater than
  32.  We used to have 4 separate arrays of 32 queues each, so this
  may not be optimal.  The new run queue code was written with this
  in mind; changing the number of run queues only requires changing
  constants in runq.h and adjusting the priority levels.
- The new run queue code takes the run queue as a parameter.  This
  is intended to be used to create per-cpu run queues.  Implement
  wrappers for compatibility with the old interface which pass in
  the global run queue structure.
- Group the priority level, user priority, native priority (before
  propogation) and the scheduling class into a struct priority.
- Change any hard coded priority levels that I found to use
  symbolic constants (TTIPRI and TTOPRI).
- Remove the curpriority global variable and use that of curproc.
  This was used to detect when a process' priority had lowered and
  it should yield.  We now effectively yield on every interrupt.
- Activate propogate_priority().  It should now have the desired
  effect without needing to also propogate the scheduling class.
- Temporarily comment out the call to vm_page_zero_idle() in the
  idle loop.  It interfered with propogate_priority() because
  the idle process needed to do a non-blocking acquire of Giant
  and then other processes would try to propogate their priority
  onto it.  The idle process should not do anything except idle.
  vm_page_zero_idle() will return in the form of an idle priority
  kernel thread which is woken up at apprioriate times by the vm
  system.
- Update struct kinfo_proc to the new priority interface.  Deliberately
  change its size by adjusting the spare fields.  It remained the same
  size, but the layout has changed, so userland processes that use it
  would parse the data incorrectly.  The size constraint should really
  be changed to an arbitrary version number.  Also add a debug.sizeof
  sysctl node for struct kinfo_proc.
2001-02-12 00:20:08 +00:00
Mark Murray
d888fc4e73 RIP <machine/lock.h>.
Some things needed bits of <i386/include/lock.h> - cy.c now has its
own (only) copy of the COM_(UN)LOCK() macros, and IMASK_(UN)LOCK()
has been moved to <i386/include/apic.h> (AKA <machine/apic.h>).
Reviewed by:	jhb
2001-02-11 10:44:09 +00:00
Matt Jacob
c83633a4ff Temporary workaround to get things to compile. I could have updated
genassym here, but what I've also noticed is that we're dorking
with a mutex directly at assembler level- I'm not sure that this
is wise at this stage in the SMP port- I think it's going to be much
safer for a while to do things in C until SMP wunderkind figure out
what works and slow down this 3 order differential...
2001-02-10 23:22:49 +00:00
Jake Burkholder
3cbe75a414 Clear the reschedule flag after finding it set in userret(). This
used to be in cpu_switch(), but I don't see any difference between
doing it here.
2001-02-10 20:33:35 +00:00
John Baldwin
37ea3ced36 Reenable preemption on interrupts. My last commit accidentally reverted
it as I was playing with some other ways of doing kernel preemption.

You must still specify the PREEMPTION option in your config file to get a
preemptive kernel.
2001-02-10 02:46:50 +00:00
John Baldwin
142ba5f3d7 - Make astpending and need_resched process attributes rather than CPU
attributes.  This is needed for AST's to be properly posted in a preemptive
  kernel.  They are backed by two new flags in p_sflag: PS_ASTPENDING and
  PS_NEEDRESCHED.  They are still accesssed by their old macros:
  aston(), astoff(), etc.  For completeness, an astpending() macro has been
  added to check for a pending AST, and clear_resched() has been added to
  clear need_resched().
- Rename syscall2() on the x86 back to syscall() to be consistent with
  other architectures.
2001-02-10 02:20:34 +00:00
John Baldwin
e109e2b4cd Add a macro mtx_intr_enable() to alter a spin lock such that interrupts
will be enabled when it is released.
2001-02-10 02:15:18 +00:00
John Baldwin
522be16a94 Use the MI ithread helper functions in the alpha hardware interrupt code. 2001-02-09 17:53:23 +00:00
John Baldwin
062d8ff5a0 - Catch up to the new swi API changes:
- Use swi_* function names.
  - Use void * to hold cookies to handlers instead of struct intrhand *.
- In sio.c, use 'driver_name' instead of "sio" as the name of the driver
  lock to minimize diffs with cy(4).
2001-02-09 17:46:35 +00:00
John Baldwin
929604ec9b Move the initailization of the proc lock for proc0 very early into the MD
startup code.
2001-02-09 16:25:16 +00:00
Bosko Milekic
9ed346bab0 Change and clean the mutex lock interface.
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00
Jeroen Ruigrok van der Werven
9a01d32bfd Fix typo: seperate -> separate.
Seperate does not exist in the english language.

Submitted to look at by:	kris
2001-02-06 10:39:38 +00:00
Jeroen Ruigrok van der Werven
294939dced Fix typo: wierd -> weird. 2001-02-06 09:20:17 +00:00
John Baldwin
f933f02094 - Minimize the amount of duplicated code for the PREEMPTION #ifdef, it now
only covers about 3-4 lines.
- Don't lower the IPL while we are on the interrupt stack.  Instead, save
  the raised IPL and change the saved IPL in sched_lock to IPL_0 before
  calling mi_switch().  When we are resumed, restore the saved IPL in
  sched_lock to the saved raised IPL so that when we release sched_lock
  we won't lower the IPL.  Without this, we would get nested interrupts
  that would overflow the kernel stack.

Tested by:	mjacob
2001-02-05 19:34:25 +00:00
Poul-Henning Kamp
37d4006626 Another round of the <sys/queue.h> FOREACH transmogriffer.
Created with:   sed(1)
Reviewed by:    md5(1)
2001-02-04 16:08:18 +00:00
Peter Wemm
bcf77694d1 Clean up some leftovers from the root mount cleanup that was done some
time ago.  FFS_ROOT and CD9660_ROOT are obsolete.
2001-02-04 15:35:10 +00:00
Poul-Henning Kamp
fc2ffbe604 Mechanical change to use <sys/queue.h> macro API instead of
fondling implementation details.

Created with: sed(1)
Reviewed by: md5(1)
2001-02-04 13:13:25 +00:00
Peter Wemm
7aef6a1e88 All the world is not an i386. Merge rev 1.438 of i386/i386/machdep.c.
Make buffer_map a system map.
2001-02-04 07:00:47 +00:00
Peter Wemm
2c083a42ed Grumble, I broke this file with a vi accident before commit. :-(
Submitted by: Christian Weisgerber <naddy@mips.inka.de>
2001-02-04 04:13:12 +00:00
Peter Wemm
acbecce3e1 Conditionalize the alpha interrupt preemption for now to buy us some
time to sort out the quirks.  Add 'options PREEMPTION' to test it on
the Alpha.

Reviewed by: jhb
2001-02-03 03:26:39 +00:00
Doug Rabson
294156a7ff * Move exception_return to exception.s which is a more logical home for it.
* Optimise the return path for syscalls so that they only restore a minimal
  set of registers instead of performing a full exception_return.

A new flag in the trapframe indicates that the frame only holds partial
state. When it is necessary to perform a full state restore (e.g. after an
execve or signal), the flag is cleared to force a full restore.
2001-02-02 10:20:30 +00:00
Peter Wemm
ed4f8196d0 Argh, I missed some #include "sio.h". I was looking primarily for NSIO
when I did my sweeps.

Submitted by: mjacob
2001-02-02 01:48:40 +00:00
Matt Jacob
6f7809f526 Remove inclusion of now vanished sio.h. 2001-02-01 21:59:00 +00:00
Matt Jacob
b91d22ca89 Guess that this is what Doug *intended* to commit.... 2001-02-01 21:58:34 +00:00
Jake Burkholder
05f6ee66ea Implement preemptive scheduling of hardware interrupt threads.
- If possible, context switch to the thread directly in sched_ithd(),
  rather than triggering a delayed ast reschedule.

- Disable interrupts while restoring fpu state in the trap handler,
  in order to ensure that we are not preempted in the middle, which
  could cause migration to another cpu.

Reviewed by:	peter
Tested by:	peter (alpha)
2001-02-01 03:34:20 +00:00
Doug Rabson
c586bc8e57 * Move exception_return to exception.s which is a more logical home for it.
* Optimise the return path for syscalls so that they only restore a minimal
  set of registers instead of performing a full exception_return.

A new flag in the trapframe indicates that the frame only holds partial
state. When it is necessary to perform a full state restore (e.g. after an
execve or signal), the flag is cleared to force a full restore.
2001-01-31 11:17:00 +00:00
Peter Wemm
8ab109d131 Remove count for NSIO. The only places it was used it were incorrect.
(alpha-gdbstub.c got sync'ed up a bit with the i386 version)
2001-01-31 10:54:45 +00:00
John Baldwin
7ad1d369bb Remove unnecessary locking to protect the p_upages_obj and p_addr
pointers.
2001-01-30 00:35:35 +00:00
Peter Wemm
03927d3c33 Send "#if NISA > 0" to the bit-bucket and replace it with an option.
These were compile-time "is the isa code present?" tests and not
'how many isa busses' tests.
2001-01-29 09:38:39 +00:00
Andrew Gallatin
28c039e747 The API UP1100 is close enough to a UP1000 that FreeBSD just works on it, so
document that fact.

Thanks to Peter Petrakis <ppetrakis@alphalinux.org> for doing a test boot.
2001-01-27 20:56:00 +00:00
John Baldwin
cf0be84ff5 Turn on DEVFS by default for the alpha. Aside from vinum as mentioned by
phk it should work fine.  If you need vinum, then don't add this to your
kernel config until vinum catches up to DEVFS.
2001-01-27 08:34:58 +00:00
John Baldwin
a0346459f1 Update some comments, s0 in the pcb of a child returning from fork1() is
now passed in as a0 to fork_exit() and and s2 is passed in as a1.
2001-01-26 23:32:38 +00:00
Andrew Gallatin
97e32dadb4 The osfulator needs sysvipc to work. Thanks to DES's commit to
the i386 linulator for pointing this out.

The alpha linulator doesn't need a dependancy, as it already
depends on the osfulator.
2001-01-26 17:12:30 +00:00
John Baldwin
7b1bec368f Back out over-aggressive locking of p->p_cred.
Requested by:	alfred
2001-01-25 01:09:44 +00:00
John Baldwin
29d3cf45a7 Remove prototype for child_return(). 2001-01-24 22:00:13 +00:00
John Baldwin
2a36ec35ae - Change fork_exit() to take a pointer to a trapframe as its 3rd argument
instead of a trapframe directly.  (Requested by bde.)
- Convert the alpha switch_trampoline to call fork_exit() and use the MI
  fork_return() instead of child_return().
- Axe child_return().
2001-01-24 21:59:25 +00:00
John Baldwin
77e9b2790e - Remove some unused and unneeded atomic operations sitting in mp_machdep.c
that are already implemented in atomic.h.
- Fix SMP kernel builds.
2001-01-24 19:49:13 +00:00
John Baldwin
c2e9063250 Oops, when converting if (foo) panic() to a KASSERT(), you have to invert
the test case.

Spotted by:	peter, jasone
2001-01-24 13:10:17 +00:00
Jason Evans
1b367556b5 Convert all simplelocks to mutexes and remove the simplelock implementations. 2001-01-24 12:35:55 +00:00
John Baldwin
60bb997eb3 Proc locking. 2001-01-24 10:27:11 +00:00
John Baldwin
ee7a93c9ab Use queue macros. 2001-01-24 10:26:51 +00:00
John Baldwin
fb8d5b0534 Add a prototype for isa_irq_mask() to quiet a warning. 2001-01-24 10:25:44 +00:00
John Baldwin
fc15ff1a64 Wrap the IPI definitions and function prototypes in #ifdef SMP. 2001-01-24 10:25:09 +00:00
John Baldwin
c6f6b7292b - Rename the gd_cpuno member of struct globaldata to gd_cpuid.
- Add a globaldata_register() prototype in the SMP case.
2001-01-24 10:24:49 +00:00
John Baldwin
e62be0bfe7 - Proc locking.
- P_OWEUPC -> PS_OWEUPC.
2001-01-24 10:23:54 +00:00
John Baldwin
a92ac5b9ae - Change userret() to take a struct trapframe * as its second argument and
to extract the PC from that to send to addupc_task() so that it can be
  called from MI code.
- Remove all traces of have_giant with extreme prejudice and use
  mtx_owned(&Giant) instead where appropriate.
- Proc locking.
- P_FOO -> PS_FOO.
- Don't grab Giant just to look in curproc's p_addr during a trap since we
  may choose to immediately exit.  Instead, delay grabbing Giant a bit
  until we actually need it.
- Don't reset 'p' to 'curproc' in syscall() to handle the case of a child
  returning from fork1() since children don't return via syscall().
- Remove an XXX comment in ast() that questions the correctness of the
  userland check.  The code is correct.
2001-01-24 10:23:21 +00:00
John Baldwin
1d64ccdcbb - Proc locking.
- P_INMEM -> PS_INMEM.
2001-01-24 10:16:23 +00:00
John Baldwin
0a8ec7a3bd - Proc locking.
- Don't send IPIs for pmap_invalidate_page() or pmap_invalidate_all()
  in the UP case.
- Catch up to cpuno -> cpuid.
- Convert some sanity checks that were #ifdef DIAGNOSTIC to KASSERT()'s.
2001-01-24 10:16:01 +00:00
John Baldwin
21f31719b6 - Adjust some whitespace to reduce diffs with the i386 version.
- Rename the per-CPU variable 'cpuno' to 'cpuid'.  This was done so that
  there is one consistent name across all architectures for a logical
  CPU id.
- Remove all traces of IRQ forwarding.
- Add globaldata_register() hook called by globaldata_init() to register
  globaldata structures in the cpuid_to_globaldata array.
- Catch up to P_FOO -> PS_FOO.
- Bring across some fixes for forwarded_statclock() from the i386 version
  to handle ithreads and idleproc properly.
- Rename addugd_intr_forwarded() to addupc_intr_forwarded() so that it is
  the same name on all architectures.
- Set flags in p_sflag instead of calling psignal() from
  forward_hardclock().
- Proc locking.
- When we handle an IPI, turn off its bit in the mask of IPI's we are
  currently handling so that an IPI doesn't send a CPU into an infinite
  loop.
2001-01-24 10:13:13 +00:00
John Baldwin
caf46c8d44 - Initialize curproc, proc0.p_heldmtx, and proc0.p_contested earlier so
that mutex operations work.
- Enter Giant earlier so we hold it during boot.
- Proc locking.
- Move globaldata_init() into here from mp_machdep.c so that UP kernels
  don't depend on mp_machdep.c.  Use a callout in the SMP case to register
  the boot processor's globaldata in the cpuid_to_globaldata array.
2001-01-24 10:07:42 +00:00
John Baldwin
8929eb2c88 - Wrap the IPI interrupt handler in #ifdef SMP.
- Catch up to cpuno -> cpuid change.
- Add parens around a subexpression to quiet a warning.
2001-01-24 10:05:24 +00:00
John Baldwin
35d14e0f54 cpuno -> cpuid. 2001-01-24 10:04:32 +00:00
John Baldwin
30a62a81e3 Don't import the nonexistent astpending variable. 2001-01-24 10:03:05 +00:00
John Baldwin
e4fb2bca29 Wrap the startup code used by secondary processors in #ifdef SMP. 2001-01-24 10:01:53 +00:00
Jason Evans
0cde2e34af Move most of sys/mutex.h into kern/kern_mutex.c, thereby making the mutex
inline functions non-inlined.  Hide parts of the mutex implementation that
should not be exposed.

Make sure that WITNESS code is not executed during boot until the mutexes
are fully initialized by SI_SUB_MUTEX (the original motivation for this
commit).

Submitted by:	peter
2001-01-21 22:34:43 +00:00
Dag-Erling Smørgrav
a3ea6d41b9 First step towards an MP-safe zone allocator:
- have zalloc() and zfree() always lock the vm_zone.
 - remove zalloci() and zfreei(), which are now redundant.

Reviewed by:	bmilekic, jasone
2001-01-21 22:23:11 +00:00
Jake Burkholder
a448b62ac9 Make intr_nesting_level per-process, rather than per-cpu. Setup
interrupt threads to run with it always >= 1, so that malloc can
detect M_WAITOK from "interrupt" context.  This is also necessary
in order to context switch from sched_ithd() directly.

Reviewed By:	peter
2001-01-21 19:25:07 +00:00
Jason Evans
d1c1b8413e Remove MUTEX_DECLARE() and MTX_COLD. Instead, postpone full mutex
initialization until after malloc() is safe to call, then iterate through
all mutexes and complete their initialization.

This change is necessary in order to avoid some circular bootstrapping
dependencies.
2001-01-21 07:52:20 +00:00
Peter Wemm
80d739b4ec This conf file seems to have rotted quite a bit.. 2001-01-19 13:03:41 +00:00
Peter Wemm
a496358e30 Remove the now-empty ipl_funcs.c file on all platforms. 2001-01-19 09:59:56 +00:00
Peter Wemm
198c5b0891 Remove the static splXXX functions and replace them by static __inline
stubs.  Remove the xxx_imask variables which have been all but gone for
a while.
2001-01-19 09:57:29 +00:00
Bosko Milekic
08812b3925 Implement MTX_RECURSE flag for mtx_init().
All calls to mtx_init() for mutexes that recurse must now include
the MTX_RECURSE bit in the flag argument variable. This change is in
preparation for an upcoming (further) mutex API cleanup.
The witness code will call panic() if a lock is found to recurse but
the MTX_RECURSE bit was not set during the lock's initialization.

The old MTX_RECURSE "state" bit (in mtx_lock) has been renamed to
MTX_RECURSED, which is more appropriate given its meaning.

The following locks have been made "recursive," thus far:
eventhandler, Giant, callout, sched_lock, possibly some others declared
in the architecture-specific code, all of the network card driver locks
in pci/, as well as some other locks in dev/ stuff that I've found to
be recursive.

Reviewed by: jhb
2001-01-19 01:59:14 +00:00
Poul-Henning Kamp
02e5c5513c These files have been on deathrow for a couple of months, no appeal. 2001-01-16 10:01:56 +00:00
Mark Murray
b79ad7e642 Remove NOBLOCKRANDOM as a compile-time option. Instead, provide
exactly the same functionality via a sysctl, making this feature
a run-time option.

The default is 1(ON), which means that /dev/random device will
NOT block at startup.

setting kern.random.sys.seeded to 0(OFF) will cause /dev/random
to block until the next reseed, at which stage the sysctl
will be changed back to 1(ON).

While I'm here, clean up the sysctls, and make them dynamic.
Reviewed by:		des
Tested on Alpha by:	obrien
2001-01-14 17:50:15 +00:00
Jake Burkholder
7586909279 Remove unused per-cpu variables inside_intr and ss_eflags. 2001-01-12 07:47:54 +00:00
Jake Burkholder
df729d6f00 - Remove compatibility macros for accessing per-cpu variables.
__FreeBSD_version 500015 can be used to detect their disappearance.
- Move the symbols for SMP_prvspace and lapic from globals.s to
  locore.s.
- Remove globals.s with extreme prejudice.
2001-01-11 14:46:26 +00:00
Jake Burkholder
ef73ae4b0c Use PCPU_GET, PCPU_PTR and PCPU_SET to access all per-cpu variables
other then curproc.
2001-01-10 04:43:51 +00:00
Matt Jacob
f0cab81245 The alpha architecture is 64 bits, so bus_addr_t && bus_size_t should really
be 64 bits wide. The largest known current actual physical implementation
is 40 bits, so BUS_SPACE_MAXADDR should reflect this. It also seems to
me that BUS_SPACE_UNRESTRICTED should b ~0UL, not ~0.
2001-01-09 18:17:48 +00:00
David E. O'Brien
eaca6822a9 Put VCS ids in a consistent place and form. 2001-01-08 06:24:08 +00:00
David E. O'Brien
2590b31beb Remove seconds types we don't use that came in thru the NetBSD heiratage. 2001-01-08 06:17:11 +00:00
Jake Burkholder
f8761e53a7 Implement accessors for per-cpu variables which don't depend on the
symbols in globals.s.

	PCPU_GET(name) returns the value of the per-cpu variable
	PCPU_PTR(name) returns a pointer to the per-cpu variable
	PCPU_SET(name, val) sets the value of the per-cpu variable

In general these are not yet used, compatibility macros remain.

Unifdef SMP struct globaldata, this makes variables such as cpuid
available for UP as well.

Rebuilding modules is probably a good idea, but I believe old
modules will still work, as most of the old infrastructure
remains.
2001-01-06 19:55:42 +00:00
David E. O'Brien
e91cf05816 Sort some of the _BSD_* types. 2001-01-01 22:26:56 +00:00
Matt Jacob
32f73b1c3e Add a dopey makefile to do the tags dance, which is probably not perfect
but is better than nothing by a good deal.
2000-12-31 23:26:34 +00:00
David E. O'Brien
ca1d6e0610 Move all VCS ids to a consistent location. 2000-12-28 18:21:32 +00:00
David E. O'Brien
ebf7598b4d Add multiple inclusion protection.
PR:		23902
Submitted by:	Christian Weisgerber <naddy@mips.inka.de>
2000-12-28 18:18:23 +00:00
Jake Burkholder
98f03f9030 Protect proc.p_pptr and proc.p_children/p_sibling with the
proctree_lock.

linprocfs not locked pending response from informal maintainer.

Reviewed by:	jhb, -smp@
2000-12-23 19:43:10 +00:00
Matt Jacob
38e147e106 Fix ypo in essage about isabling EISA nterrupt ector
(tip 'o the tired cap to Bernd Walter <ticso@cicely5.cicely.de>)
2000-12-15 23:09:05 +00:00
John Baldwin
5f38ca907c Remove the "machine dependent" KTR trace buffer ddb commands. The code was
exactly the same on all platforms.
2000-12-14 23:57:30 +00:00
Matt Jacob
6cd8749dbf Add route interrupt method. 2000-12-13 09:07:16 +00:00
David E. O'Brien
c81f693089 Sync with i386/GENERIC rev 1.294 removing "COMPAT_OLDPCI".
This fixed the broken kernel build on the Alpha.
2000-12-13 07:34:47 +00:00
Jake Burkholder
c0c2557090 - Change the allproc_lock to use a macro, ALLPROC_LOCK(how), instead
of explicit calls to lockmgr.  Also provides macros for the flags
  pased to specify shared, exclusive or release which map to the
  lockmgr flags.  This is so that the use of lockmgr can be easily
  replaced with optimized reader-writer locks.
- Add some locking that I missed the first time.
2000-12-13 00:17:05 +00:00
Andrew Gallatin
be5182cc4d enable the proper cascade irq on as1000a
tested by: wilko
2000-12-12 01:39:17 +00:00
Andrew Gallatin
f4aea0e88a fix AS1000/AS1000A support. It turns out the that iobus depends on the
CPU version (apecs:ev4::cia:ev5) and the irq hardware depends on the systype
previously, only ev4 AS1000s and ev5 AS1000a's would have worked.

tested by: wilko (in its -stable form)
noticed by: daniel
2000-12-12 01:36:26 +00:00
Andrew Gallatin
1b771c9281 fix various compiler warnings generated by previous commit 2000-12-12 01:32:36 +00:00
Jake Burkholder
92cf772d8d - Add code to detect if a system call returns with locks other than Giant
held and panic if so (conditional on witness).
- Change witness_list to return the number of locks held so this is easier.
- Add kern/syscalls.c to the kernel build if witness is defined so that the
  panic message can contain the name of the offending system call.
- Add assertions that Giant and sched_lock are not held when returning from
  a system call, which were missing for alpha and ia64.
2000-12-12 01:14:32 +00:00
Matt Jacob
25b53bb41f Store in globaldata our CPU ID#. Provide a lock for panics - only one
CPU can panic at a time.
Obtained from:Andrew Gallatin <gallatin@cs.duke.edu>
2000-12-09 20:52:42 +00:00
Mike Smith
bb0d0a8efc Next phase in the PCI subsystem cleanup.
- Move PCI core code to dev/pci.
 - Split bridge code out into separate modules.
 - Remove the descriptive strings from the bridge drivers.  If you
   want to know what a device is, use pciconf.  Add support for
   broadly identifying devices based on class/subclass, and for
   parsing a preloaded device identification database so that if
   you want to waste the memory, you can identify *anything* we know
   about.
 - Remove machine-dependant code from the core PCI code.  APIC interrupt
   mapping is performed by shadowing the intline register in machine-
   dependant code.
 - Bring interrupt routing support to the Alpha
   (although many platforms don't yet support routing or mapping
   interrupts entirely correctly).  This resulted in spamming
   <sys/bus.h> into more places than it really should have gone.
 - Put sys/dev on the kernel/modules include path.  This avoids
   having to change *all* the pci*.h includes.
2000-12-08 22:11:23 +00:00
Andrew Gallatin
313231657d Partially re-write T2 chipset support based on Tru64 platform support
files which Compaq open-sourced (with a BSD license).

This commit adds support for proper PCI interrupt mapping and much
better support for swizzling between "standard" isa IRQs and the stdio
irqs used by the t2.  This also adds enabling/disabling/eoi support
for AlphaServer 2100A machines.  The 2100A (or lynx) interrupt
hardware is is very different (and much nicer) than the 2100.
Previously, only AS2100 and AS2000 machines worked.

This commits also lays the groundwork for supporting ExtIO modules.
These modules are essentially a second hose.  This work is left
unfinished pending testing on real hardware.  Wilko tells me that
ExtIO modules are quite rare, and may not actually exist in the wild.

Obtained from: Tru64
Tested by: wilko
2000-12-07 01:06:19 +00:00
Marcel Moolenaar
e5f2ced1ee Minor cleanups:
o  remove unused prototypes,
o  remove unused extern declarations,
o  move prototypes up.
2000-12-05 09:06:41 +00:00
Marcel Moolenaar
ec79304f0f Make osendsig global. It's used by the Linuxulator. 2000-12-05 09:04:25 +00:00
Jake Burkholder
1eb44f0270 Remove the last of the MD netisr code. It is now all MI. Remove
spending, which was unused now that all software interrupts have
their own thread.  Make the legacy schednetisr use an atomic op
for setting bits in the netisr mask.

Reviewed by:	jhb
2000-12-05 00:36:00 +00:00
Matt Jacob
b741a1c581 Fix for vanilla PC164 systems to use a slightly different PALcode magic
tweak to enable/disable interrupt sources. Seems to work. It is unclear
how many of the PC164 models actually might needs this, and whether or
not there are other hidden issues.

Obtained from:Bernd Walter <ticso@cicely8.cicely.de>
2000-12-04 17:21:46 +00:00
Matt Jacob
bd1c746647 Comment out debug printfs about enable/disable ints.
Current now appears to work at least fitfully on one Rawhide.
2000-12-04 01:33:44 +00:00
David Malone
ea8b5a9ae9 More M_ZERO patches.
Submitted by:	josh@zipperup.org
Submitted by:	Robert Drehmel <robd@gmx.net>
Approved by:	mjacob
2000-12-03 20:46:54 +00:00
Marcel Moolenaar
b4c6727a3a Don't auto-generate the syscalls. 2000-12-03 01:30:31 +00:00
Marcel Moolenaar
a7e693e3a0 Don't auto-generate syscalls. 2000-12-03 01:28:51 +00:00
Andrew Gallatin
6e4708aa12 exec_osf1_imgact() should return -1 for non OSF1/ECOFF binaries, it should
not return ENOEXEC.  This is because image activators should return -1 if they
don't claim an image. They should return ENOEXEC if they do claim it,
but cannot load it due to sime problem with the image.   This bug was
preventing static compilation of the osf/1 module.  I'm surprised it
did not cause more problems.
2000-12-02 04:15:17 +00:00
Andrew Gallatin
6e01adb67f Alter isa interrupt behaviour on alpha. Rather than send a non-specific
EOI after the ithread runs, send the EOI when we get the interrupt and
disable the source.  After the ithread is run, the source is renabled.
Also, add isa_handle_fast_intr() which handles fast interrupts by sending
an EOI after the handler is run.

This fixes the chronic missing interrupt problems under heavy NFS load
on my UP1000 and should result in greater stability for alphas which
route all irqs through an isa pic.

Discussed with: jhb, bde (sending non-specific EOIs early was bde's idea)
2000-12-01 22:28:04 +00:00
Andrew Gallatin
4c0b7a9327 acquire/release Giant in vm_page_zero_idle(), like on i386
Discused with: jhb
2000-12-01 18:55:58 +00:00
Andrew Gallatin
689634a3ea Convert the pcib_{read,write}_config args from signed to unsigned,
like the args to the config space accessors these functions replaced.

This reduces the likelyhood of overflow when the args are used in
macros on the alpha.  This prevents memory management faults when
probing the pci bus on sables, multias and nonames.

Approved by: dfr
Tested by: Bernd Walter <ticso@cicely8.cicely.de>
2000-12-01 15:27:48 +00:00
Alfred Perlstein
82625cf321 remove unneded sys/ucred.h includes 2000-11-30 18:52:32 +00:00
Marcel Moolenaar
d034d459da Don't use p->p_sigstk.ss_flags to keep state of whether the
process is on the alternate stack or not. For compatibility
with sigstack(2) state is being updated if such is needed.

We now determine whether the process is on the alternate
stack by looking at its stack pointer. This allows a process
to siglongjmp from a signal handler on the alternate stack
to the place of the sigsetjmp on the normal stack. When
maintaining state, this would have invalidated the state
information and causing a subsequent signal to be delivered
on the normal stack instead of the alternate stack.

PR: 22286
2000-11-30 05:23:49 +00:00
Jonathan Lemon
9528be94e8 Add 'mpsafe' parameter to callout_init() in MD bits.
Reminded by:  jake
2000-11-26 13:52:17 +00:00
Marcel Moolenaar
466b14d758 Don't unregister the ioctl handlers before we verified we
can unload. Doing so leaves the linuxulator in a crippled
state (no ioctl support) when Linux binaries are run at
unload time.

While here, consistently spell ELF in capitals and perform
some minor style improvements.

ELF spelling submitted by: asmodai
2000-11-23 03:21:58 +00:00
Jake Burkholder
553629ebc9 Protect the following with a lockmgr lock:
allproc
	zombproc
	pidhashtbl
	proc.p_list
	proc.p_hash
	nextpid

Reviewed by:	jhb
Obtained from:	BSD/OS and netbsd
2000-11-22 07:42:04 +00:00
Doug Rabson
8707b6f032 Protect the bounce page list with a mutex instead of using splhigh(). 2000-11-22 07:16:51 +00:00
Mark Murray
5855006767 Add a consistent API to a feature that most modern CPUs have; a fast
counter register in-CPU.

This is to be used as a fast "timer", where linearity is more important
than time, and multiple lines in the linearity caused by multiple CPUs
in an SMP machine is not a problem.

This adds no code whatsoever to the FreeBSD kernel until it is actually
used, and then as a single-instruction inline routine (except for the
80386 and 80486 where it is some more inline code around nanotime(9).

Reviewed by:	bde, kris, jhb
2000-11-21 19:55:21 +00:00
Andrew Gallatin
c75fa7f70c fix isa DMA on pyxis based machines:
- move the call to cia_init_sgmap() to after we've determined if we're a pyxis
- convert needed splhigh() in cia_sgmap_invalidate_pyxis() to disable_intr()

Previously, any isa DMA on a pyxis based machine would cause a panic
in cia_sgmap_invalidate_pyxis() because the pyxis workaround was never
setup.

- while i'm at it, convert needed splhigh() in cia_swiz_set_hae_mem to
disable_intr()
2000-11-21 03:25:31 +00:00
Poul-Henning Kamp
d7450ce6d5 Make programs which still #include <machine/{mouse,console}.h> fail
at compiletime, with an explanatory error message.  Previously they
would only get a warning.

These files will be finally removed 2001-01-15
2000-11-20 22:00:25 +00:00
Doug Rabson
35cd89e7e5 Convert various calls to splhigh() to disable_intr() since splhigh() is
now a no-op.
2000-11-19 12:28:42 +00:00
Doug Rabson
bcc542cb4e We don't need <stddef.h> for offsetof() any more. 2000-11-19 12:26:14 +00:00
Jake Burkholder
fa2fbc3dac - Protect the callout wheel with a separate spin mutex, callout_lock.
- Use the mutex in hardclock to ensure no races between it and
  softclock.
- Make softclock be INTR_MPSAFE and provide a flag,
  CALLOUT_MPSAFE, which specifies that a callout handler does not
  need giant.  There is still no way to set this flag when
  regstering a callout.

Reviewed by:	-smp@, jlemon
2000-11-19 06:02:32 +00:00
Jake Burkholder
7da6f97772 - Split the run queue and sleep queue linkage, so that a process
may block on a mutex while on the sleep queue without corrupting
it.
- Move dropping of Giant to after the acquire of sched_lock.

Tested by:	John Hay <jhay@icomtek.csir.co.za>
		jhb
2000-11-17 18:09:18 +00:00
John Baldwin
20cdcc5b73 Don't release and acquire Giant in mi_switch(). Instead, release and
acquire Giant as needed in functions that call mi_switch().  The releases
need to be done outside of the sched_lock to avoid potential deadlocks
from trying to acquire Giant while interrupts are disabled.

Submitted by:	witness
2000-11-16 02:16:44 +00:00
Andrew Gallatin
930a65fe47 Use the linux_connect() on alpha rather than passing directly through
to our native connect().  This is required to deal with the differences
in the way linux handles connects on non-blocking sockets.

This gets the private beta of the Compaq Linux/alpha JDK working
on FreeBSD/alpha

Approved by: marcel
2000-11-16 01:05:53 +00:00
Andrew Gallatin
e652fd8417 make the fcntl() flags match what the linux/alpha port uses, not
what linux/i386 uses
2000-11-16 00:58:07 +00:00
John Baldwin
4b2c46fab1 Add the 'witness_spin_check' per-CPU variable. 2000-11-15 21:58:02 +00:00
John Baldwin
651c378316 - Don't acquire/release Giant during an interrupt context for machine
checks, clock interrupts, and device interrupts.
- Assert that Giant is not owned during the main loop of ithd_loop().
2000-11-15 21:56:50 +00:00
John Baldwin
a436e6e696 Fix all the interrupt enabled/disabled assertions which were backwards. 2000-11-15 19:45:10 +00:00