Commit Graph

28377 Commits

Author SHA1 Message Date
Matt Jacob
0ba15d27f7 Oops. Remove wx. 2001-10-20 20:21:34 +00:00
Jake Burkholder
6bbac2dd30 Add missing includes. 2001-10-20 18:52:44 +00:00
Jake Burkholder
ac7165deae Remove interrupt queue array. Its in globaldata now. 2001-10-20 18:51:45 +00:00
Jake Burkholder
58a822cfc2 Fix get_cyclecount. Wrap in ifdef _KERNEL. 2001-10-20 18:51:10 +00:00
Matt Jacob
8c7c272c5a Remove wx. 2001-10-20 18:50:31 +00:00
Matt Jacob
f2465b0df3 Remove this driver from FreeBSD.
Jonathon Lemon's driver (gx) is at least as fast and has more features
and is likely to be better supported.

It is also possible that Intel might support this chipset in FreeBSD
with their own driver. Somewhat secretive and furtive rumblings from
certain Yahoo employees have indicated that this might happen soon.

I'm a little unhappy at the lack of discussion on the net list about
this, or on developers, or on hackers, or the lack of mention on
audit. This then leaves me to try and figure out the right thing
to do.

I've concluded that the right thing to do is to remove wx from FreeBSD,
as this is probably best for FreeBSD.
2001-10-20 18:48:45 +00:00
Jake Burkholder
d620294863 Use KTR_PMAP instead of KTR_CT1. 2001-10-20 17:11:07 +00:00
Jake Burkholder
49d8e44385 Catch up to changing entry point names so traces through traps
mostly work right.  This catches recursive traps too early, but
generally such traps are fatal and we won't get this far anyway.
2001-10-20 17:10:34 +00:00
Jake Burkholder
e47e7481db Add a definition for normal kernel window state. 2001-10-20 17:08:33 +00:00
Jake Burkholder
cc0bc9ad21 Catch up to new assembly language code. 2001-10-20 17:07:18 +00:00
Jake Burkholder
140bf733a7 Fix a bug in the kernel entry window handling where the wrong register
was used.  This resulted in bogus bad window traps (invalid wstate).

Add a trace to sfsr traps (alignment among other things).

Use KTR_TRAP instead of KTR_CT1.

Use the right registers when storing the values of various
mmu registers into the trap frame.  This fixes a bug where sometimes
the context number reported by a fault would be garbage.  Sometimes
it would be zero for faults on user address space so the kernel would
wrongly think that it was a fault on kernel address space and fail.

Use the preloaded registers in the vectored interrupt trap instead
of reading pointers from memory.  Remove traces due to register
pressure and excess verbosity.  We can probably still sneak in one
trace.  Remove some debug code.

Go back to using the tsb register during kernel page table lookups.
This is the best way to not have to have the address of the kernel tsb be
a compile time constant.  We lie and say we have 1 page tsb when really
its much larger.  This way the hardware provides bits 13-22 of the
virtual address (the lower 9 bits of the virtual page number) in the
form of the address of the tte corresponding to the fault address in
the (1 page) kernel tsb.  With some clever arithmetic we can then get
bits 22 and up from the tte tag and add them to the tte address in
order to index massive tsbs (basically unlimited).

Add traps for physical address hardware watchpoints.

Don't try to pass the window state from the trap table entry point
all the way down to the common trap code.  Its too easy to clobber
and reading it again doesn't cost much.

Fixup some traces.

Fiddle the cwp bits on return from the kernel to user mode so that
the window we are returning to is always the same as the one we
restore to in the trap code.  Strictly speaking this is not necessary,
it only affects return from fork and exec, but setting up the windows
right would require hard coding the right cwp values in cpu_fork and
setregs, basically hard coding the number of frames between syscall and
tl0_ret.  The result of getting it wrong is usually a spill to an invalid
stack pointer; either 0 or pointing into kernel space.  This should also
alleviate the need to context switch the cwp.

Transfer the trap state from locals to alternate globals in the trap
return code so that we can do a restore and rotate the windows before
reloading the trap registers.  If the restore fails we'll trap back
into the kernel, so there's no point in loading the trap registers
before hand.  Its is crucial that the window trap recovery code not
clobber the alternate globals.
2001-10-20 17:06:04 +00:00
Jake Burkholder
2baa1ef450 Align the symbol that demarks the end of the signal code on a 16 byte
boundary.  It must be on at least an 8 byte boundary so that the length
of the signal code is a multiple of 8 (well aligned).  The size is used
in the calculation of the address of the argument and environment vectors
on the user stack; getting it wrong results in the string pointers being
misaligned and causes alignment faults in getenv() among other things.

Allocate a regular stack frame below the signal frame on the user stack
and join up the frame pointer to the previous frame.  This fixes longjmp-ing
out of signal handlers.  Longjmp traverses the stack upwards in order to
find the right frame to return to, so the frame pointers must join up
seamlessly.  I thought this would just work, but obviously the frame
needs to be below the signal frame, not above it like before.  Account
for the extra space in the signal code.

Preload pointers to interrupt data structures in interrupt globals.
This avoids the need to load the pointers from memory in the vectored
interrupt trap handler.

Transfer the first 2 out registers into td_retval in setregs.  We use
the same registers for system call arguments as return values, so these
registers got clobbered by the system call return values on return from
execve.  They now get clobbered by the right values.  We must put the values
in both the out registers in the trapframe and in td_retval because init
calls exec but fails to transfer the return value into the out registers.
This fixes a bug where the first exec after init would pass junk to the
c runtime, instead of a pointer to the argument strings.  A better solution
would be to return EJUSTRETURN on success from execve.

Adjust for change in pmap_bootstraps prototype.

Map the message buffer after the trap table is setup.  We will fault
on it immediately.
2001-10-20 16:36:08 +00:00
Jake Burkholder
6ef2d9a02d Parameterize the size of the kernel virtual address space on KVA_PAGES.
Don't use a hard coded address constant for the virtual address of the
kernel tsb.  Allocate kernel virtual address space for the kernel tsb
at runtime.
Remove unused parameter to pmap_bootstrap.
Adapt pmap.c to use KVA_PAGES.
Map the message buffer too.
Add some traces.
Implement pmap_protect.
2001-10-20 16:17:04 +00:00
Jake Burkholder
d37e05e1c4 Remove hardcoded cwp value. 2001-10-20 16:10:13 +00:00
Jake Burkholder
4daaec8bec Use KTR_PROC instead of KTR_CT1 in traces. 2001-10-20 16:09:50 +00:00
Jake Burkholder
7e16bdb39b Return zero on success from su*. Apparently no one checks the return
values.
Add traces to fubyte, subyte, etc.  These are useful for catching errors.
due to alignment since its usually not checked for by the caller.
2001-10-20 16:09:20 +00:00
Ian Dowse
72ec63a53d Introduce some jitter to the timing of the samples that determine
the system load average. Previously, the load average measurement
was susceptible to synchronisation with processes that run at
regular intervals such as the system bufdaemon process.

Each interval is now chosen at random within the range of 4 to 6
seconds. This large variation is chosen so that over the shorter
5-minute load average timescale there is a good dispersion of
samples across the 5-second sample period (the time to perform 60
5-second samples now has a standard deviation of approx 4.5 seconds).
2001-10-20 16:07:17 +00:00
Jake Burkholder
209cf80d43 Add support for physical address hardware watchpoints. 2001-10-20 16:04:39 +00:00
Jake Burkholder
6c3dcb9735 Change the stray count in struct intr_vector to a vector number that can
be used to index tables of counters.
Remove intr_dispatch() inline, it is implemented directly in tl*_intr now.
Count stray interrupts in a table of counters like intrcnt.
Disable interrupts briefly when setting up the interrupt vector table.
We must disable interrupts completely, not just raise the pil.
Pass pointers to the intr_vector structures rather than a vector number
to sched_ithd and intr_stray.
2001-10-20 16:03:41 +00:00
Jake Burkholder
44217f38a5 Remove traces that are loud and not that useful. Remove nested include
of ktr.h.
2001-10-20 15:58:31 +00:00
Jake Burkholder
c93b7ccb41 Remove an unused macro arg. 2001-10-20 15:57:39 +00:00
Jake Burkholder
4fd2757c37 Include a whole interrupt queue in struct globaldata instead of just a
pointer.  Minor style.
2001-10-20 15:57:09 +00:00
Jake Burkholder
3d6e05660a Add fields for boothowto and the kernel environment to boothowto. 2001-10-20 15:55:42 +00:00
Doug Rabson
2baea57020 Reserve space for signal state. 2001-10-20 15:19:43 +00:00
Ian Dowse
0eb6ce3169 Move the code that computes the system load average from vm_meter.c
to kern_synch.c in preparation for adding some jitter to the
inter-sample time.

Note that the "vm.loadavg" sysctl still lives in vm_meter.c which
isn't the right place, but it is appropriate for the current (bad)
name of that sysctl.

Suggested by:	jhb (some time ago)
Reviewed by:	bde
2001-10-20 13:10:43 +00:00
Jonathan Lemon
d8b84d9e07 Only examine inet addresses of the interface. This was broken in r1.83,
with the result that the system would reply to an ARP request of 0.0.0.0
2001-10-20 05:14:06 +00:00
Marcel Moolenaar
3824d75af1 Save the AP wake-up vector from the SAL descriptor under SMP.
Note that the descriptor is optional. Add a comment to indicate
that we want to register the OS_BOOT_RENDEZ here as well.
2001-10-20 03:39:55 +00:00
Marcel Moolenaar
5b8c64dd2c Make this compile under option SMP. 2001-10-20 03:33:07 +00:00
John Baldwin
76e296aa31 - Make the sio_inited handling more properly MP safe.
- If we are booting with a serial console, then pass the MTX_QUIET flag to
  mtx_init of the sio lock as otherwise KTR_VERBOSE simply doesn't work.
2001-10-20 03:32:33 +00:00
John Baldwin
dee2bb2540 Assert that a ucred is unshared before we remap its ids. 2001-10-20 03:30:34 +00:00
John Baldwin
c516499ad4 Make the flag field in the ps output one char wider to account for recent
growth in the number of flags used.  Also, if a thread is blocked on a
mutex, print the mutex name in the wait channel column.
2001-10-20 03:22:23 +00:00
Andrew Gallatin
dd79258102 apparently EV5 2x00s have their t2 CSRs where I'd expect to find
them on a  2100A

Thanks to Tyler Willingham <ze_willow@yahoo.com> for letting me
test this on his AS2000
2001-10-20 01:27:23 +00:00
John Baldwin
7ada587697 The mtx_init() and sx_init() functions bzero'd locks before handing them
off to witness_init() making the check for double intializating a lock by
testing the LO_INITIALIZED flag moot.  Workaround this by checking the
LO_INITIALIZED flag ourself before we bzero the lock structure.
2001-10-20 01:22:42 +00:00
David E. O'Brien
c932615213 Drop support for x87 emulation. Any CPU one would dare to run 5-CURRENT
on would have built-in FP support.
2001-10-20 01:15:54 +00:00
Dag-Erling Smørgrav
82835638e1 Tweak the way we determine if an interface needs to have its name translated.
Add some missing break statements in the socket ioctl switch.
Check the return value from copyin() / copyout().
Fix some disorderings and misindentations.
Support a couple more socket ioctls.
Add missing break statements.
2001-10-20 00:01:26 +00:00
Peter Wemm
259ed91740 Add a sysctl for preventing the sync() in panic() recovery. This can
be so dangerous it isn't funny.  eg: if you panic inside NFS or softdep,
and then try and sync you run into held locks and cause either deadlocks,
recursive panics or other interesting chaos.  Default is unchanged.
2001-10-19 23:32:03 +00:00
Mark Peek
94e0b85e76 Fix includes based on recent changes to lock.h, mutex.h and ktr.h. 2001-10-19 22:45:46 +00:00
Doug Rabson
ccd97ec1f2 Add unaligned.c and delete commented out entry for userconfig.c 2001-10-19 22:25:00 +00:00
Doug Rabson
76f7435e6e Make a start at an unaligned trap handler. Only integer loads and stores
are handled so far.
2001-10-19 22:23:51 +00:00
Mark Peek
43aba0eadb Make override of nm consistent across all platforms and sort the overrides.
Reminded by:	obrien
2001-10-19 22:19:06 +00:00
Doug Rabson
c33287f969 Translate various userland traps into SIGBUS (instead of just panicing). 2001-10-19 20:46:12 +00:00
Ruslan Ermilov
c3917acb86 Fix the typedef of va_list. 2001-10-19 20:07:46 +00:00
Ruslan Ermilov
8c93e71e33 Try two on the preprocessing logic.
Reviewed by:	obrien
2001-10-19 20:06:23 +00:00
David E. O'Brien
9f9bd82e15 Try two on the preprocessing logic.
Reviewed by:	ru
2001-10-19 20:01:01 +00:00
John Baldwin
fb63feef6f - Move the definition of LOCK_DEBUG back to sys/lock.h from sys/_lock.h.
- Change LOCK_DEBUG so that it is always on if KTR is compiled in
  regardless of the state of KTR_COMPILE.  This means that we no longer
  need to include sys/ktr.h before sys/lock.h to ensure a valid setting
  for LOCK_DEBUG.
- Change the use of LOCK_DEBUG so that it is now always defined and its
  value is used instead of merely its definition.  That is, instead of
  #ifdef LOCK_DEBUG, code should now use #if LOCK_DEBUG > 0.
- Use this latest to #error out in sys/mutex.h if sys/lock.h isn't
  included before sys/mutex.h to ensure that the proper versions of the
  mutex operations are used.
- As a result of (2) sys/mutex.h no longer includes sys/ktr.h in the
  KERNEL case.

Requested by:	bde (1)
2001-10-19 19:28:18 +00:00
John Baldwin
e37d2a8c82 Remove unneeded sys/mutex.h includes. 2001-10-19 19:23:32 +00:00
John Baldwin
d6e19ad10e Move sys/mutex.h include after sys/lock.h to ensure we use the proper
versions of the mutex operations.
2001-10-19 19:22:04 +00:00
David E. O'Brien
4b16cf4f8a Blah, fix braino where ru had to remind me of proper preprocessor syntax.
Bad fingers, no cookie.
2001-10-19 19:17:11 +00:00
Matt Jacob
e58c2b8381 Fix this so it compiles cleanly for alpha. Tried to do some minimal testing.
Reviewed by:	freebsd-net
2001-10-19 18:29:57 +00:00
Dag-Erling Smørgrav
32c798f806 Argh! I updated the version number in the MODULE_DEPEND() thingamagook but
not in the actual MODULE_VERSION().  Pass me the pointy hat.
2001-10-19 18:23:51 +00:00