27007 Commits

Author SHA1 Message Date
jhb
54a0ded8d4 Work around a race between msleep() and endtsleep() where it was possible
for endtsleep() to be executing when msleep() resumed, for endtsleep()
to spin on sched_lock long enough for the other process to loop on
msleep() and sleep again resulting in endtsleep() waking up the "wrong"
msleep.

Obtained from:	BSD/OS
2001-08-10 21:08:56 +00:00
jhb
22915435df Change callout_stop() to return an integer. If callout_stop() succeeds in
removing the callout entry, return 1.  If callout_stop() fails to remove
the callout entry because it is currently executing or has already been
executed, then the function returns 0.  The idea was obtained from BSD/OS,
however, BSD/OS changed untimeout(), and I've just changed callout_stop()
to be more conservative.

Obtained from:	BSD/OS
2001-08-10 21:06:59 +00:00
jhb
18c8b84e2f Style nit: covert a couple of if (p_wchan) tests to if (p_wchan != NULL). 2001-08-10 20:56:25 +00:00
ru
f858dca3dc mdoc(7) police: join split punctuation to macro calls. 2001-08-10 17:35:21 +00:00
julian
f3e8b0f40c Do NOT allocate a 1K buffer on the kernel stack.
Found by: Smashed u-area and hardware watch points.
MFC after: 1 week
2001-08-10 17:32:11 +00:00
yokota
a685abddda Fix missing splx(). 2001-08-10 14:26:48 +00:00
phk
aa55336f13 Eliminate the hot-spare 'r' in Arrray.
Submitted by:	Søren Schrøder <sch@chaos.dk>
2001-08-10 11:47:08 +00:00
julian
257f6bb43a DO NOT ALLOCATE 2+K OBJECTS ON THE KERNEL STACK!!!!
found by: Getting my u-area overwritten
2001-08-10 07:50:14 +00:00
jhb
def8c67e00 - Remove asleep(), await(), and M_ASLEEP.
- Callers of asleep() and await() have been converted to calling tsleep().
  The only caller outside of M_ASLEEP was the ata driver, which called both
  asleep() and await() with spl-raised, so there was no need for the
  asleep() and await() pair.  M_ASLEEP was unused.

Reviewed by:	jasone, peter
2001-08-10 06:56:12 +00:00
jhb
6c77154134 - Remove asleep(), await(), and M_ASLEEP.
- Callers of asleep() and await() have been converted to calling tsleep().
  The only caller outside of M_ASLEEP was the ata driver, which called both
  asleep() and await() with spl-raised, so there was no need for the
  asleep() and await() pair.  M_ASLEEP was unused.

Reviewed by:	jasone, peter
2001-08-10 06:45:43 +00:00
jhb
2ff1c253cd - Remove asleep(), await(), and M_ASLEEP.
- Callers of asleep() and await() have been converted to calling tsleep().
  The only caller outside of M_ASLEEP was the ata driver, which called both
  asleep() and await() with spl-raised, so there was no need for the
  asleep() and await() pair.  M_ASLEEP was unused.

Reviewed by:	jasone, peter
2001-08-10 06:37:05 +00:00
imp
bb40f57a7c Move ISA interrupt ISR and timeout routines to pcic from pcic_isa so
that we can use them in the pci code when we have to fall back to ISA
interrupt routing.
2001-08-10 06:07:20 +00:00
imp
41502082f3 Type sanity: use uintptr_t * for read_ivar and u_int8_t instead of u_char 2001-08-10 06:00:44 +00:00
imp
57b70118c1 Rearrange the pcic_irq_type enum (and specifically tag the first one
as being 1) in anticipation of documentation.
2001-08-10 05:42:08 +00:00
jhb
f066389aac Bump MAXCOMLEN from 16 to 19 to take advantage of 32-bit alignment.
Approved by:	peter, jasone
2001-08-10 05:34:48 +00:00
jake
a2ccfa0c6d Correct copyright language. 2001-08-10 04:51:19 +00:00
jake
cdce7694e2 Add code to program the tick register and to setup its interrupt handler. 2001-08-10 04:49:33 +00:00
jake
3aedfd6196 Add early code to support interrupts. 2001-08-10 04:48:48 +00:00
jake
ea3624730c Fake up the frame pointers on a process's initial stack so they can be
restored correctly from the trapframe.

Submitted by:	tmm
2001-08-10 04:47:14 +00:00
jake
51df5872b5 Handle all types of mmu misses from user mode.
Pass a context argument to tlb functions.
2001-08-10 04:44:33 +00:00
jake
0f671f083d Use the macro for getting the trap type from the trapframe.
Only set sticks (and acquire sched_lock) on entry from user mode.
Add handlers for all kinds of mmu misses, and for interrupts from
user mode.
Acquire Giant before calling into the vm system so this runs with
invariants.
Try to get the restrictions for page faults on user memory from
kernel mode right.
Only set pcb_onfault and return to the alternate return code if
this is actually a fault on user memory from kernel mode.
2001-08-10 04:43:31 +00:00
jake
b6b80770d8 Store 8 bytes instead of 4 in suword. Use a temporary stack that's known
to be locked in the tlb for calling openfirmware.

Submitted by:	tmm
2001-08-10 04:39:23 +00:00
jake
351b4d0652 Pass a context to tlb_store_slot, use a member(Sync) after setting the
secondary context register.
2001-08-10 04:37:03 +00:00
jake
557d27322d 1. Start the clock running early for testing.
2. Use the upcoming "tick" interface.
3. Save a call frame as well as a trap frame on proc0's initial stack.
4. Setup a pointer to the per-cpu interrupt queue.
5. Install the per-cpu pointer in interrupt and alternate globals as well.
6. Flush out setregs so exec works.

Submitted by:	tmm (3, 5, 6)
2001-08-10 04:36:00 +00:00
jake
e2dd4bc232 Set the pil to something sane on startup. 2001-08-10 04:32:13 +00:00
jake
51f9c4ea38 Add definitions needed by new assembler code. 2001-08-10 04:31:30 +00:00
jake
0c6ba3f6f4 1. Add code to handle traps and interrupts from user mode.
2. Add spill and fill handlers for spills to the user stack on entry
   to the kernel.
3. Add code to handle instruction mmu misses from user mode.
4. Add code to handle level interrupts from kernel mode and vectored
   interrupt traps from either.
5. Save the pil in the trapframe on entry from kernel mode and restore
   it on return.

Submitted by:	tmm (1, 2)
2001-08-10 04:30:36 +00:00
jake
02f57a4a09 Add code to handle stack traces that go all the way back to userland.
Use a better algorithm for finding out if an address is in the kernel.

Submitted by:	tmm
2001-08-10 04:23:41 +00:00
jake
46fd39a866 Add trap types for interrupts. Ad definitions to get the interrupt level
from the trap type.
2001-08-10 04:22:24 +00:00
jake
636a22e19d 1. Add code to demap pages from the tlb for user contexts.
2. Add a context argument to most functions, instead of extracting it from
   from the tte.

Submitted by:	tmm (1).
2001-08-10 04:21:44 +00:00
jake
bd7595b429 Add fields that point to per-cpu interrupt data. 2001-08-10 04:18:48 +00:00
jake
f49fc709ca Add a field to trapframe for saving the pil. 2001-08-10 04:18:13 +00:00
jake
a9e7523870 Add asis for interrupt registers. 2001-08-10 04:17:29 +00:00
jhb
89b722b37f Axe spl's obsoleted by the callout mutex. 2001-08-10 01:36:25 +00:00
simokawa
4725d9a069 Fix unaligned access (fault) on alpha with ndp -p/-r and sysctl -a.
Discussed on users@jp.ipv6.org

MFC candidate.
2001-08-10 00:34:20 +00:00
mp
c3c304385c Allow for text section alignment to properly align the "end" symbol at the
actual end of the section. The new gas (binutils) puts in additional padding
which was misaligning the concatenated btx loader.

Reported by:	Oliver Hartmann <ohartman@klima.physik.uni-mainz.de>,
		Harti Brandt <brandt@fokus.gmd.de>
Tested by:	Oliver Hartmann <ohartman@klima.physik.uni-mainz.de>,
		David Wolfskill <dhw@whistle.com>, ps
Reviewed by:	jhb
MFC after:	1 day
2001-08-09 20:47:58 +00:00
jhb
f31a34e5d1 Trim trailing whitespace. 2001-08-09 18:07:45 +00:00
obrien
7b125fc898 The author isn't a [UC] Regents. Correct the copyright language. 2001-08-09 02:32:05 +00:00
obrien
1b5e0592ae Fix VCS ID spamage. 2001-08-09 02:29:32 +00:00
obrien
ffdbb9dc0c Restore the proper copyright on this and remove the gratuitous changes from
sys/alpha/include/elf.h.
2001-08-09 02:24:05 +00:00
obrien
f202ead276 The author isn't a [UC] Regents. Correct the copyright language. 2001-08-09 02:09:34 +00:00
peter
0c05c098a9 *** empty log message *** 2001-08-09 01:21:58 +00:00
peter
0202a68674 Build modules from the main src/sys tree.
Tidy up some loose ends.. there were extra -I's being added to CFLAGS for
no reason.
2001-08-09 00:13:30 +00:00
peter
c56bebbea6 Add the screen savers for test coverage. 2001-08-09 00:05:30 +00:00
peter
5f243ba62c repo-copy the source files from modules/syscons to the normal tree
and connect them to the normal build infrastructure.
2001-08-09 00:02:30 +00:00
peter
5f165bb85c Add the Rio 800 USB device IDs
Submitted by: Wesley Morgan <morganw@chemikals.org>
2001-08-08 23:04:31 +00:00
green
c2971068e6 In the KLD "load" make target, don't load using the "absolute" path of
"./foo.ko".  Use "/full/path/foo.ko" instead so that when the path is
reported as being an absolute path to the "shared library", at least
it's not really a relative path.

Obtained from:	LOMAC/FreeBSD project
2001-08-08 13:51:10 +00:00
peter
bb5c43c4b8 Zap 'ptrace(PT_READ_U, ...)' and 'ptrace(PT_WRITE_U, ...)' since they
are a really nasty interface that should have been killed long ago
when 'ptrace(PT_[SG]ETREGS' etc came along.  The entity that they
operate on (struct user) will not be around much longer since it
is part-per-process and part-per-thread in a post-KSE world.

gdb does not actually use this except for the obscure 'info udot'
command which does a hexdump of as much of the child's 'struct user'
as it can get.  It carries its own #defines so it doesn't break
compiles.
2001-08-08 05:25:15 +00:00
peter
185e591533 We do not have UPAGES following the tail end of the user VM space anymore. 2001-08-08 04:02:22 +00:00
dd
045a8bbdf3 Introduce a force option, MD_FORCE, that instructs the driver to
bypass some extra anti-foot-shooting measures.  Currently, its only
effect is to allow detaching a device while it's still open (e.g.,
mounted).  This is useful for testing how the system reacts to a disk
suddenly going away, which can happen with some removeable media.

At this point, the force option is only checked on detach, so it
would've been possible to allow the option to be passed with the
MDIOCDETACH operation.  This was not done to allow the possibility of
having the force flag influence other tests in the future, which may
not necessarily deal with detaching the device.

Reviewed by:	sobomax
Approved by:	phk
2001-08-07 19:23:16 +00:00