Commit Graph

2653 Commits

Author SHA1 Message Date
Jake Burkholder
1306962a43 Change cpu_switch to explicitly popl the callers program counter and
pushl that of the new process, rather than doing a movl (%esp) and
assuming that the stack has been setup right.  This make the initial
stack setup slightly more sane, and will make it easier to stick
an interrupted process onto the run queue without its knowing.
2000-12-03 01:09:59 +00:00
Mark Murray
4a3a2f0704 Namespace cleanup. Remove some #includes in favour of an explicit
declaration.

Asked for by:	bde
2000-12-02 17:59:41 +00:00
John Baldwin
1bcb20def1 Fix this slightly better by using NON_GPROF_RET instead of duplicating
hard-coded asm.

Suggested by:	bde
2000-12-01 05:29:21 +00:00
Jake Burkholder
21ad98bca8 Change doreti to take a trapframe instead of an intrframe.
Remove associated pushes of dummy units to convert frame.

Reviewed by:	jhb
2000-12-01 02:09:45 +00:00
John Baldwin
e60877b3ae Revert the previous change to this file. We have to hardcode in the opcode
for return because we do Evil Things(tm) with a 'ret' macro in
asmacros.h.

Noticed by:	markm
2000-11-30 20:07:49 +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
Peter Wemm
083e9ed543 Increase NKPT from 17 to 30. This fixes the 4GB ram boot panic on both
-current and RELENG_4 with GENERIC.

NKPT is the number of initial bootstrap page table pages we create for
the kernel during startup. Once VM is up, we resize it as needed, but
with 4G ram, the size of the vm_page_t structures was pushing it over
the limit.  The fact that trimmed down kernels boot on 4G ram machines
suggests that we were pretty close to the edge.

The "30" is arbitary, but smaller than the 'nkpt' variable on all
machines that I checked.
2000-11-30 01:53:02 +00:00
John Baldwin
8d9888d37a Don't wait forever for CPUs to stop or restart. Instead, give up after a
timeout.  If DIAGNOSTIC is turned on, then display a message to the console
with a map of which CPUs failed to stop or restart.  This gives an SMP box
at least a fighting chance of getting into DDB if one of the other CPUs has
interrupts disabled.
2000-11-28 23:52:36 +00:00
John Baldwin
bf8bfade99 Use atomic ops to close a race condition on the in_Debugger variable used
to only allow 1 CPU at a time to (non-recursively) enter the debugger.
2000-11-28 23:15:44 +00:00
Jonathan Lemon
e82ac18e52 Revert the last commit to the callout interface, and add a flag to
callout_init() indicating whether the callout is safe or not.  Update
the callers of callout_init() to reflect the new interface.

Okayed by: Jake
2000-11-25 06:22:16 +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
Mark Murray
39413503a4 Assembler fixes.
Fix opcodes that were typed as ".byte 0xNN, 0xMM" when an older
assembler could not recognise the newer Pentium instructions.
Reviewed by:	jhb
2000-11-21 20:16:49 +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
John Baldwin
0fb3a41200 Stop handcoding a couple of instructions since gas 2.10 can properly
assemble 16-bit code.

Noticed by:	markm
2000-11-21 18:36:10 +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
835a748f30 - Change extra sanity checks in cpu_switch() to be conditional on INVARIANTS
instead of DIAGNOSTIC.
- Remove the p_wchan check as it no longer applies since a process may be
  switched out during CURSIG() within msleep() or mawait().
- Remove an extra sanity check only needed during the early SMPng work.
2000-11-17 17:37:43 +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
John Baldwin
7c06c69188 Assert that Giant is not owned during the main loop of ithd_loop(). 2000-11-15 22:03:26 +00:00
Warner Losh
e655ea71de Add pmtimer device, necessary for proper time keeping when apm or
other power management devices are enabled.
2000-11-15 18:36:24 +00:00
John Baldwin
4ae465d099 Always enable interrupts during fork_trampoline() after releasing the
sched_lock.  This is needed for kernel threads that are created before
interrupts are enabled.  kthreads created by kld's that are created at
SI_SUB_KLD such as the random kthread.

Tested by:	phk
2000-11-14 23:01:24 +00:00
Jordan K. Hubbard
4dc665b8bf Proper capitalization of PCMCIA (and avoid matching pcm) 2000-11-14 01:13:57 +00:00
Jordan K. Hubbard
68ce54fbde In the year 2000, I think it's perfectly reasonable to include audio
support by default in GENERIC.
2000-11-14 01:11:13 +00:00
John Baldwin
af80d322a6 Fix a bug with handling of the saved interrupt state for spin mutexes in
the MTX_EXIT_WITH_RECURSION() assembly macro (currently unused).

Submitted by:	bde
2000-11-13 18:39:18 +00:00
Yoshihiro Takahashi
8965720482 Initialize bus_space_handle_t with zero (for PC-98). 2000-11-13 11:48:38 +00:00
Marcel Moolenaar
806d7daafe Make MINSIGSTKSZ machine dependent, and have the sigaltstack
syscall compare against a variable sv_minsigstksz in struct
sysentvec as to properly take the size of the machine- and
ABI dependent struct sigframe into account.

The SVR4 and iBCS2 modules continue to have a minsigstksz of
8192 to preserve behavior. The real values (if different) are
not known at this time. Other ABI modules use the real
values.

The native MINSIGSTKSZ is now defined as follows:

Arch		MINSIGSTKSZ
----		-----------
alpha		    4096
i386		    2048
ia64		   12288

Reviewed by: mjacob
Suggested by: bde
2000-11-09 08:25:48 +00:00
Jeroen Ruigrok van der Werven
5b488b3443 Fix some further english grammar and typo's. 2000-11-08 12:00:05 +00:00
Jeroen Ruigrok van der Werven
a47ea7b90e Fix typo's: UPGRADE_CPU_HW_CACHE -> CPU_UPGRADE_HW_CACHE 2000-11-08 11:58:07 +00:00
Mike Smith
e9ca98b28f Hack to work around a probe which will lock up at least some i450GX-based
systems.

From the PR:

 When 'probe.slot' is PCI_SLOTMAX (== 31) and 'probe.func' is 7,
 call to 'pci_cfgread()' here and machine suddenly hangs up.
 I don't know why...  (or 450GX chipset's bug?)

PR:		i386/20379
Submitted by:	Masayuki FUKUI <fukui@sonic.nm.fujitsu.co.jp>
2000-11-08 11:25:15 +00:00
Warner Losh
30cb2a0dfb Make the ISA nic section look like the other device sections with
comments on the same line like so:
	device		foo		# FooInc Brand NetEther cards

Also, move the wireless NIC cards to their own section.

Add commented out wl driver in wireless section.

Remove obsolete or redundant comments about some of the wireless cards
that used to apply but don't since we've removed 'at foobus'.

There should be no functional changes in this change.
2000-11-07 21:20:52 +00:00
Warner Losh
5350155530 Minor ordering changes to make more sections strictly alphabetical. 2000-11-07 21:06:57 +00:00
Semen Ustimenko
600ae3dd25 Synced tx(4) driver descriptions + ``device tx'' line moved to the
list of drivers using miibus.

PR:		kern/22556
2000-11-07 20:22:19 +00:00
Alfred Perlstein
b5d335ad6d Protect against an infinite loop when prefaulting pages. This can
happen when the vm system maps past the end of an object or tries
to map a zero length object, the pmap layer misses the fact that
offsets wrap into negative numbers and we get stuck.

Found by: Joost Pol aka Nohican <nohican@marcella.niets.org>
Submitted by: tegge
2000-11-07 18:31:16 +00:00
Bill Paul
f425f328cd The vx driver no longer needs the PCI compat shims. Also should now
work on the alpha (at least the PCI part should).
2000-11-07 00:58:35 +00:00
Mike Smith
099d058b54 Improve the PCI interrupt routing code. Now the process is as follows:
- Look for a hardwired interrupt in the routing table for this
   bus/device/pin (we already did this).
 - Look for another device with the same link byte which has a hardwired
   interrupt.
 - Look for a PCI device matching an entry with the same link byte
   which has already been assigned an interrupt, and use that.
 - Look for a routable interrupt listed in the "PCI only" interrupts
   field and use that.
 - Pick the first interrupt that's marked as routable and use that.
2000-11-02 00:37:45 +00:00
Poul-Henning Kamp
a16d0eb2d7 Deprecate devsw->d_bmaj entirely.
This removes support for booting current kernels with very old bootblocks.

Device driver writers: Please remove initializations for the d_bmaj
field in your cdevsw{}.
2000-10-31 10:58:14 +00:00
Poul-Henning Kamp
da936bf80a Remove unneeded <stddef.h> #includes. 2000-10-29 16:57:42 +00:00
Poul-Henning Kamp
53ce36d17a Remove unneeded #include <sys/proc.h> lines. 2000-10-29 13:57:19 +00:00
Nik Clayton
f94a808c35 Add a brief comment telling people to retain 'device miibus' as necessary.
PR:		docs/21981
Submitted by:	Matthew Emmerton <matt@gsicomp.on.ca>
2000-10-28 22:32:17 +00:00
Mike Smith
fd660059d9 FreeBSD-specific OSD (operating system dependant) modules for the Intel
ACPICA code.
2000-10-28 06:56:15 +00:00
Poul-Henning Kamp
54b1161b73 Revert two experimental changes which escaped from my devel machine. 2000-10-28 06:55:12 +00:00
John Baldwin
55d79ad0db The x86 atomic operations are already locked, so they do not need an
additional locked instruction to guarantee a write barrier for the acquire
variants.

Approved by:	dfr
Pointy hat to:	jhb
2000-10-28 00:28:15 +00:00
John Baldwin
7c0cb49a64 Fix a couple of whitespace nits. 2000-10-27 21:45:50 +00:00
Poul-Henning Kamp
46aa3347cb Convert all users of fldoff() to offsetof(). fldoff() is bad
because it only takes a struct tag which makes it impossible to
use unions, typedefs etc.

Define __offsetof() in <machine/ansi.h>

Define offsetof() in terms of __offsetof() in <stddef.h> and <sys/types.h>

Remove myriad of local offsetof() definitions.

Remove includes of <stddef.h> in kernel code.

NB: Kernelcode should *never* include from /usr/include !

Make <sys/queue.h> include <machine/ansi.h> to avoid polluting the API.

Deprecate <struct.h> with a warning.  The warning turns into an error on
01-12-2000 and the file gets removed entirely on 01-01-2001.

Paritials reviews by:   various.
Significant brucifications by:  bde
2000-10-27 11:45:49 +00:00
Bruce Evans
4a3bb59944 Declare or #define per-cpu globals in <machine/globals.h> in all cases.
The i386 UP case was messily different.
2000-10-27 08:30:59 +00:00
Mark Murray
5f3431b5ad As the blocking model has seems to be troublesome for many, disable
it for now with an option.

This option is already deprecated, and will be removed when the
entropy-harvesting code is fast enough to warrant it.
2000-10-27 06:06:04 +00:00
John Baldwin
ee8f2f372c - Add atomic_cmpset_{acq_,rel_,}_long
- Add in atomic operations for 8-bit, 16-bit, and 32-bit integers
2000-10-25 21:56:16 +00:00
Paul Saab
fbdfe15620 Fast interrupts have no associated process, therefore do not try
and schedule it.  This fixes booting machines with broken MP tables.
2000-10-25 10:40:20 +00:00
Nick Hibma
2fd84f56d5 The USB scanner driver. To be used together with SANE. 2000-10-25 10:34:38 +00:00
John Baldwin
8088699f79 - Overhaul the software interrupt code to use interrupt threads for each
type of software interrupt.  Roughly, what used to be a bit in spending
  now maps to a swi thread.  Each thread can have multiple handlers, just
  like a hardware interrupt thread.
- Instead of using a bitmask of pending interrupts, we schedule the specific
  software interrupt thread to run, so spending, NSWI, and the shandlers
  array are no longer needed.  We can now have an arbitrary number of
  software interrupt threads.  When you register a software interrupt
  thread via sinthand_add(), you get back a struct intrhand that you pass
  to sched_swi() when you wish to schedule your swi thread to run.
- Convert the name of 'struct intrec' to 'struct intrhand' as it is a bit
  more intuitive.  Also, prefix all the members of struct intrhand with
  'ih_'.
- Make swi_net() a MI function since there is now no point in it being
  MD.

Submitted by:	cp
2000-10-25 05:19:40 +00:00
John Baldwin
a555b1468d Don't dink with interrupts in vm_page_zero_idle(). This code assumed it
was being called with interrupts disabled, when it was actually being called
with them enabled.

Pointed out by:	tegge
2000-10-23 23:32:36 +00:00
Noriaki Mitsunaga
ae94720d12 Add PC-Card/ISA SCSI host adpater drivers from NetBSD/pc98
(a NetBSD port for NEC PC-98x1 machines). They are ncv for NCR 53C500,
nsp for Workbit Ninja SCSI-3, and stg for TMC 18C30 and 18C50.

I thank NetBSD/pc98 and bsd-nomads people.

Obtained from:	NetBSD/pc98
2000-10-23 12:55:51 +00:00
John Baldwin
bd4635599d Define the mtx_legal2block() macro used in the witness code that managed
to get lost during the MI mutex conversion.

Reported by:    Steve Kargl <sgk@troutmask.apl.washington.edu>
2000-10-20 22:44:06 +00:00
Andrey A. Chernov
c07f6a2dd1 Return -10000 in pci_hostb_probe to allow agp driver (disabled otherwise) 2000-10-20 15:40:05 +00:00
Andrey A. Chernov
da0f52e1ea Add i815 Host to Hub 2000-10-20 15:14:51 +00:00
John Baldwin
35e0e5b311 Catch up to moving headers:
- machine/ipl.h -> sys/ipl.h
- machine/mutex.h -> sys/mutex.h
2000-10-20 07:58:15 +00:00
John Baldwin
d1182da2cf Actually harvest interrupt threads when the last handler is removed from a
thread.
2000-10-20 07:46:12 +00:00
John Baldwin
13b0500f02 - machine/mutex.h -> sys/mutex.h
- Use cpu_throw() instead of cpu_switch() during cpu_exit() since we don't
  need to save our previous state.
2000-10-20 07:43:55 +00:00
John Baldwin
bce7f05af8 - machine/mutex.h -> sys/mutex.h
- Catch up to the MI mutex structure due to saveflags,saveipl,savepsr
  becoming saveintr.
2000-10-20 07:38:44 +00:00
John Baldwin
557b927eca - machine/mutex.h -> sys/mutex.h
- Use MUTEX_DECLARE() and MTX_COLD for Giant and sched_lock.
2000-10-20 07:32:48 +00:00
John Baldwin
02660e29a8 - machine/mutex.h -> sys/mutex.h
- machine/ipl.h -> sys/ipl.h
- Use MUTEX_DECLARE() for clock_lock
2000-10-20 07:31:00 +00:00
John Baldwin
36412d79b4 - Make the mutex code almost completely machine independent. This greatly
reducues the maintenance load for the mutex code.  The only MD portions
  of the mutex code are in machine/mutex.h now, which include the assembly
  macros for handling mutexes as well as optionally overriding the mutex
  micro-operations.  For example, we use optimized micro-ops on the x86
  platform #ifndef I386_CPU.
- Change the behavior of the SMP_DEBUG kernel option.  In the new code,
  mtx_assert() only depends on INVARIANTS, allowing other kernel developers
  to have working mutex assertiions without having to include all of the
  mutex debugging code.  The SMP_DEBUG kernel option has been renamed to
  MUTEX_DEBUG and now just controls extra mutex debugging code.
- Abolish the ugly mtx_f hack.  Instead, we dynamically allocate
  seperate mtx_debug structures on the fly in mtx_init, except for mutexes
  that are initiated very early in the boot process.   These mutexes
  are declared using a special MUTEX_DECLARE() macro, and use a new
  flag MTX_COLD when calling mtx_init.  This is still somewhat hackish,
  but it is less evil than the mtx_f filler struct, and the mtx struct is
  now the same size with and without mutex debugging code.
- Add some micro-micro-operation macros for doing the actual atomic
  operations on the mutex mtx_lock field to make it easier for other archs
  to override/optimize mutex ops if needed.  These new tiny ops also clean
  up the code in some places by replacing long atomic operation function
  calls that spanned 2-3 lines with a short 1-line macro call.
- Don't call mi_switch() from mtx_enter_hard() when we block while trying
  to obtain a sleep mutex.  Calling mi_switch() would bogusly release
  Giant before switching to the next process.  Instead, inline most of the
  code from mi_switch() in the mtx_enter_hard() function.  Note that when
  we finally kill Giant we can back this out and go back to calling
  mi_switch().
2000-10-20 07:26:37 +00:00
John Baldwin
ccbdd9ee59 - Expand the set of atomic operations to optionally include memory barriers
in most of the atomic operations.  Now for these operations, you can
  use the normal atomic operation, you can use the operation with a read
  barrier, or you can use the operation with a write barrier.  The function
  names follow the same semantics used in the ia64 instruction set.  An
  atomic operation with a read barrier has the extra suffix 'acq', due to
  it having "acquire" semantics.  An atomic operation with a write barrier
  has the extra suffix 'rel'.  These suffixes are inserted between the
  name of the operation to perform and the typename.  For example, the
  atomic_add_int() function now has 3 variants:
  - atomic_add_int() - this is the same as the previous function
  - atomic_add_acq_int() - this function combines the add operation with a
    read memory barrier
  - atomic_add_rel_int() - this function combines the add operation with a
    write memory barrier
- Add 'ptr' to the list of types that we can perform atomic operations
  on.  This allows one to do atomic operations on uintptr_t's.  This is
  useful in the mutex code, for example, because the actual mutex lock is
  a pointer.
- Add two new operations for doing loads and stores with memory barriers.
  The new load operations use a read barrier before the load, and the
  new store operations use a write barrier after the load.  For example,
  atomic_load_acq_int() will atomically load an integer as well as
  enforcing a read barrier.
2000-10-20 07:00:48 +00:00
John Baldwin
3f4809dd0d Axe the barrier_{read,write,rw}() helper functions as this method of
doing memory barriers doesn't really scale well for the ia64.  Also,
memory barriers are more a property of the CPU than bus space.

Requested by:	dfr
2000-10-20 06:45:48 +00:00
KATO Takenori
1ae7243298 Convert the type of bus_space_handle_t of pc98 from structure into
pointer to structure.

Reviewed by:	nyan
2000-10-20 02:42:06 +00:00
Mike Smith
9d55863400 Call the BIOS to route the selected interrupt. Correctly calculate the
interrupt from the PCI routing table (ffs returns 1 for the rightmost
bit, not 0).
2000-10-19 08:06:50 +00:00
Mike Smith
4bbbd5e215 Add PCI BIOS function codes for IRQ routing fetch and route. 2000-10-19 08:02:46 +00:00
John Baldwin
dc13e6dfbb Axe the idle_event eventhandler, and add a MD cpu_idle function used
for things such as halting CPU's, idling CPU's, etc.

Discussed with:	msmith
2000-10-19 07:47:16 +00:00
John Baldwin
25f3f7c530 Add in a simple API for memory barriers to machine/bus.h:
- barrier_read() enforces a memory read barrier
- barrier_write() enforces a memory write barrier
- barrier_rw() enforces a memory read/write barrier
2000-10-18 10:30:12 +00:00
Matthew N. Dodd
a4a64f2f0a Use appropriate resource management accessors instead of directly
referencing structure members.

Use rman_get_size() instead of end - start + 1.
2000-10-18 00:09:26 +00:00
John Baldwin
ffc2c9e3ee - Catch up to moving headers, machine/ipl.h -> sys/ipl.h
- Fix some whitespace bogons.

Submitted by:	bde (2)
2000-10-17 23:10:23 +00:00
Paul Saab
c794ceb56a Implement write combining for crashdumps. This is useful when
write caching is disabled on both SCSI and IDE disks where large
memory dumps could take up to an hour to complete.

Taking an i386 scsi based system with 512MB of ram and timing (in
seconds) how long it took to complete a dump, the following results
were obtained:

Before:				After:
	WCE           TIME		WCE           TIME
	------------------		------------------
	1	141.820972		1	 15.600111
	0	797.265072		0	 65.480465

Obtained from:	Yahoo!
Reviewed by:	peter
2000-10-17 10:05:49 +00:00
Warner Losh
29f0d43398 Add types and prototypes.
Submitted by: msmith
2000-10-16 19:49:30 +00:00
Warner Losh
a37932521c Remove debug writes introduced in prior commit 2000-10-16 07:31:13 +00:00
Warner Losh
54c9005faf Add the ability to use the $PIR table in the BIOS to route interrupts
on demand.

Submitted by: msmith
2000-10-16 07:25:08 +00:00
Poul-Henning Kamp
db7e3af111 Remove unneeded #include <machine/clock.h> 2000-10-15 14:19:01 +00:00
Poul-Henning Kamp
398bc678aa Move DELAY() from <machine/clock.h> to <sys/systm.h> 2000-10-15 09:51:49 +00:00
Alan Cox
e0284d2eb1 Change the text for the ServerWorks north bridge chips. RCC is now
officially listed as ServerWorks by www.pcisig.com.
2000-10-14 23:45:09 +00:00
Peter Wemm
ac5f943c37 savectx() is now used exclusively by the crash dump system. Move the
i386 specific gunk (copy %cr3 to the pcb) from the MI dumpsys() to the
MD savectx().
2000-10-13 22:03:29 +00:00
Bruce Evans
4d448fc0ea Removed unused include of <machine/lock.h>. The locking interface stopped
being (ab)used here in rev.1.97.
2000-10-12 17:05:33 +00:00
Bruce Evans
9a25c23635 Moved the definitions of AST_PENDING and AST_RESCHED to the correct place. 2000-10-12 11:13:27 +00:00
Mike Smith
5f3dac9c03 Bring the 'twe' driver back now that we think it should work. 2000-10-12 01:46:43 +00:00
Mike Smith
3c3134d3a0 When testing for PCI bus overlap with another enumerator, make sure we
check for the right bus number.  This is still not quite right, but
fixes things for multi-bus machines again.

Submitted by:	tegge
2000-10-11 23:03:11 +00:00
Bruce Evans
e4a85a9b14 Unremoved used include of <machine/ipl.h>. Removing it in rev.1.95
significantly pessimized syscalls by arranging to do null rescheduling
on return from every syscall.  (AST_RESCHED was not defined, and the
mask ~AST_RESCHED gets replaced by the useless mask ~0.  This bug has
been fixed before, in rev.1.92.)
2000-10-09 05:39:03 +00:00
Mike Smith
03de26e0d0 Only attach "legacy" PCI busses if none have been attached via any other
method.
2000-10-09 00:44:41 +00:00
Bruce Evans
cc46dff67f Work around a bug by adding struct tags. gcc-2.95 apparently gets the
check in the [basic.link] section of the C++ standard wrong.  gcc-2.7.2.3
apparently doesn't do the check, so the bug doesn't affect RELENG_3.

PR:		16170, 21427
Submitted by:	Max Khon <fjoe@lark.websci.ru> (i386 version)
Discussed with:	jdp
2000-10-06 11:53:32 +00:00
John Baldwin
6c56727456 - Change fast interrupts on x86 to push a full interrupt frame and to
return through doreti to handle ast's.  This is necessary for the
  clock interrupts to work properly.
- Change the clock interrupts on the x86 to be fast instead of threaded.
  This is needed because both hardclock() and statclock() need to run in
  the context of the current process, not in a separate thread context.
- Kill the prevproc hack as it is no longer needed.
- We really need Giant when we call psignal(), but we don't want to block
  during the clock interrupt.  Instead, use two p_flag's in the proc struct
  to mark the current process as having a pending SIGVTALRM or a SIGPROF
  and let them be delivered during ast() when hardclock() has finished
  running.
- Remove CLKF_BASEPRI, which was #ifdef'd out on the x86 anyways.  It was
  broken on the x86 if it was turned on since cpl is gone.  It's only use
  was to bogusly run softclock() directly during hardclock() rather than
  scheduling an SWI.
- Remove the COM_LOCK simplelock and replace it with a clock_lock spin
  mutex.  Since the spin mutex already handles disabling/restoring
  interrupts appropriately, this also lets us axe all the *_intr() fu.
- Back out the hacks in the APIC_IO x86 cpu_initclocks() code to use
  temporary fast interrupts for the APIC trial.
- Add two new process flags P_ALRMPEND and P_PROFPEND to mark the pending
  signals in hardclock() that are to be delivered in ast().

Submitted by:	jakeb (making statclock safe in a fast interrupt)
Submitted by:	cp (concept of delaying signals until ast())
2000-10-06 02:20:21 +00:00
John Baldwin
a384bdbfc9 currentldt is now a "special" global-data variable, and as such, there
is no actual currentldt integer variable directly.  Thus, don't claim that
there is.
2000-10-06 01:59:07 +00:00
John Baldwin
6ccfbaa53d Interrupt frames don't include the saved cpl anymore since cpl is dead. 2000-10-06 01:57:28 +00:00
John Baldwin
a91b7dc11b Various whitespace cleanups after the SMPng commit, which jumbled things
around a bit in the trap handling code.
2000-10-06 01:55:07 +00:00
John Baldwin
0e2aab1237 Don't treat a kernel stack fault the same as a general protect fault or
a segment not present fault in the non-vm86 case.
2000-10-06 01:50:43 +00:00
John Baldwin
03cea59caf Remove an unnecessary sti and spl0() in fork_trampoline. Interrupts
should be enabled by MTX_EXIT() now when it releases the sched_lock.
2000-10-06 01:47:24 +00:00
John Baldwin
1931cf940a - Heavyweight interrupt threads on the alpha for device I/O interrupts.
- Make softinterrupts (SWI's) almost completely MI, and divorce them
  completely from the x86 hardware interrupt code.
  - The ihandlers array is now gone.  Instead, there is a MI shandlers array
    that just contains SWI handlers.
  - Most of the former machine/ipl.h files have moved to a new sys/ipl.h.
- Stub out all the spl*() functions on all architectures.

Submitted by:	dfr
2000-10-05 23:09:57 +00:00
John Baldwin
12e8a79ce1 Replace loadandclear() with atomic_readandclear_int(). 2000-10-05 22:22:31 +00:00
John Baldwin
b4645202b5 Add atomic_readandclear_int and atomic_readandclear_long. 2000-10-05 22:19:50 +00:00
John Baldwin
d238b83315 Make the gd_currentldt member in struct globaldata unconditional so
that this header doesn't depend on USER_LDT.  This fixes the USER_LDT
breakage with SMP kernels.
2000-10-05 20:30:36 +00:00
Jason Evans
645b8b81f0 Reduce userland namespace polution. 2000-10-04 01:21:58 +00:00
Peter Wemm
3a3d38ef8d Fix a cosmetic sign problem on machines with 4G of ram.
0x00312000 - 0xe5fe7fff, 3855441920 bytes (4294859990 pages)
.. becomes
0x00314000 - 0xe5fe7fff, 3855433728 bytes (941268 pages)
2000-10-02 20:13:03 +00:00
Mike Smith
12a02d6efd Move the i386 PCI attachment code out of i386/isa back into i386/pci.
Split out the configuration space access primitives, as these are needed
elsewhere as well.
2000-10-02 07:11:13 +00:00
Peter Wemm
2cf3496166 Fix the no-pci case of attaching isa, eisa and mca devices.
device_add_child() is meant to be called by the bus add_child method, not
to replace the bus add_child method.  We could have called nexus_add_device
directly too, that would have also worked.

PR:		21657
Tested by:	markm
2000-10-01 09:34:55 +00:00
Mike Smith
96f5284585 More updates to the ACPI code:
- Move all register I/O into acpi_io.c
 - Move event handling into acpi_event.c
 - Reorganise headers into acpivar/acpireg/acpiio
 - Move find-RSDT and find-ACPI-owned-memory into acpi_machdep
 - Allocate all resources (except those detailed only by AML)
   as real resources.  Add infrastructure that will make adding
   resource support to AML code easy.
 - Remove all ACPI #ifdefs in non-ACPI code
 - Removed unnecessary includes
 - Minor style and commenting fixes

Reviewed by:	iwasaki
2000-09-30 20:12:27 +00:00
Bosko Milekic
7d03271452 Big mbuf subsystem diff #1: incorporate mutexes and fix things up somewhat
to accomodate the changes.

 Here's a list of things that have changed (I may have left out a few); for a
 relatively complete list, see http://people.freebsd.org/~bmilekic/mtx_journal

   * Remove old (once useful) mcluster code for MCLBYTES > PAGE_SIZE which
     nobody uses anymore. It was great while it lasted, but now we're moving
     onto bigger and better things (Approved by: wollman).

   * Practically re-wrote the allocation macros in sys/sys/mbuf.h to accomodate
     new allocations which grab the necessary lock.

   * Make sure that necessary mbstat variables are manipulated with
     corresponding atomic() routines.

   * Changed the "wait" routines, cleaned it up, made one routine that does
     the job.

   * Generalized MWAKEUP() macro. Got rid of m_retry and m_retryhdr, as they
     are now included in the generalized "wait" routines.

   * Sleep routines now use msleep().

   * Free lists have locks.

   * etc... probably other stuff I'm missing...

  Things to look out for and work on later:

   * find a better way to (dynamically) adjust EXT_COUNTERS

   * move necessity to recurse on a lock from drain routines by providing
     lock-free lower-level version of MFREE() (and possibly m_free()?).

   * checkout include of mutex.h in sys/sys/mbuf.h - probably violating
     general philosophy here.

   The code has been reviewed quite a bit, but problems may arise... please,
   don't panic! Send me Emails: bmilekic@freebsd.org

Reviewed by: jlemon, cp, alfred, others?
2000-09-30 06:30:39 +00:00
Doug Rabson
8fb26af111 Ansify and fix warnings. 2000-09-29 16:53:39 +00:00
Doug Rabson
1ebcad5720 This is the first snapshot of the FreeBSD/ia64 kernel. This kernel will
not work on any real hardware (or fully work on any simulator). Much more
needs to happen before this is actually functional but its nice to see
the FreeBSD copyright message appear in the ia64 simulator.
2000-09-29 13:46:07 +00:00
Peter Wemm
5e5678bea0 Fill in some more missing bits from cpu_features according to the Intel
Pentium4 cpuid docs.
2000-09-29 04:53:00 +00:00
Peter Wemm
d694b7728c First shot at identifying the Pentum 4 acording to our reading of the
the cpu_id extensions in the Intel docs.  There is more info available.
See the following URL for more details.
http://developer.intel.com/design/processor/future/manuals/CPUID_Supplement.htm

Requested by:	Intel
2000-09-29 04:38:35 +00:00
Peter Wemm
b6c8407840 Get out the roto-rooter and clean up the abuse of nexus ivars by the
i386/isa/pcibus.c.  This gets -current running again on multiple host->pci
machines after the most recent nexus commits.  I had discussed this with
Mike Smith, but ended up doing it slightly differently to what we
discussed as it turned out cleaner this way.  Mike was suggesting creating
a new resource (SYS_RES_PCIBUS) or something and using *_[gs]et_resource(),
but IMHO that wasn't ideal as SYS_RES_* is meant to be a global platform
property, not a quirk of a given implementation.  This does use the ivar
methods but does so properly.  It also now prints the physical pci bus that
a host->pci bridge (pcib) corresponds to.
2000-09-28 00:37:32 +00:00
Jeroen Ruigrok van der Werven
5da1361025 Fix spelling of Katmai [Katami]. 2000-09-27 11:33:31 +00:00
Mike Smith
b16c630a6a Since the nexus is responsible for creating the I/O resources (ports, memory)
it ought to be able to deal with devices directly attached to it having
allocations of such resources.  Make it so.
2000-09-27 00:51:42 +00:00
KATO Takenori
0506e3e8c0 Recognize new Pentium III Xeon (stepping A0).
PR:		21233
Submitted by:	ade
2000-09-26 08:59:55 +00:00
John Baldwin
65e893c9b9 Fix the assmebly mutex macros to handle saving/restoring interrupt state
properly.  Fix the recursive mutex macros to actually compile.  At the
moment we only use MTX_EXIT anyways.
2000-09-24 23:34:21 +00:00
Paul Saab
92b123a002 Move MAXCPU from machine/smp.h to machine/param.h to fix breakage
with !SMP kernels.  Also, replace NCPUS with MAXCPU since they are
redundant.
2000-09-23 12:18:06 +00:00
Jason Evans
c6d1d1cf5d #include <sys/proc.h> in order to get curproc. This seems to be the lesser
of two evils; the greater evil is requiring sys/proc.h to be included
before including machine/mutex.h.
2000-09-23 00:00:50 +00:00
Paul Saab
7321545f26 Remove the NCPU, NAPIC, NBUS, NINTR config options. Make NAPIC,
NBUS, NINTR dynamic and set NCPU to a maximum of 16 under SMP.

Reviewed by:	peter
2000-09-22 23:40:10 +00:00
John Baldwin
c60db3e23a Teach MTX_EXIT_RECURSE that the recursion count is a 32-bit integer,
not a 16-bit one.
2000-09-22 04:30:33 +00:00
Mike Smith
72b535ef45 Implement halt-on-idle in the !SMP case, which should significantly
reduce power consumption on most systems.
2000-09-22 03:18:20 +00:00
Brian S. Dean
9d90941a83 Add a couple of debug register helper functions to assist in setting
and clearing watchpoints.

Reviewed by:	jwd@FreeBSD.org, -hackers@
2000-09-21 17:07:27 +00:00
Bill Paul
73334a4329 Add a new driver for the AMD PCnet/FAST, FAST+ and Home PCI adapters.
Previously, these cards were supported by the lnc driver (and they
still are, but the pcn driver will claim them first), which is fine
except the lnc driver runs them in 16-bit LANCE compatibility mode.
The pcn driver runs these chips in 32-bit mode and uses the RX alignment
feature to achieve zero-copy receive. (Which puts it in the same
class as the xl, fxp and tl chipsets.) This driver is also MI, so it
will work on the x86 and alpha platforms. (The lnc driver is still
needed to support non-PCI cards. At some point, I'll need to newbusify
it so that it too will me MI.)

The Am79c978 HomePNA adapter is also supported.
2000-09-20 17:30:22 +00:00
Eivind Eklund
300019c450 Better error message when booting an SMP kernel on an UP system. 2000-09-19 10:40:52 +00:00
Poul-Henning Kamp
c866ec47e3 Make LINT compile. 2000-09-16 18:55:05 +00:00
John Baldwin
7ab37af1ed - Add a new process flag P_NOLOAD that marks a process that should be
ignored during load average calcuations.
- Set this flag for the idle processes and the softinterrupt process.
2000-09-15 22:00:23 +00:00
Yoshihiro Takahashi
5d7e2cbea6 Moved the fe driver from the compat section to the correct section.
Submitted by:	sanpei
2000-09-15 02:25:41 +00:00
John Baldwin
518afc0f11 Check to see if we actually have an interrupt descriptor and an interrupt
thread for each interrupt that comes in.  If we don't, log the event and
return immediately for a hardware interrupt.  For a softinterrupt, panic
instead.

Submitted by:	ben
2000-09-15 00:27:57 +00:00
John Baldwin
606f8eb27a Remove the mtx_t, witness_t, and witness_blessed_t types. Instead, just
use struct mtx, struct witness, and struct witness_blessed.

Requested by:	bde
2000-09-14 20:15:16 +00:00
John Baldwin
9a94c9c5c3 - Remove the inthand2_t type and use the equivalent driver_intr_t type from
newbus for referencing device interrupt handlers.
- Move the 'struct intrec' type which describes interrupt sources into
  sys/interrupt.h instead of making it just be a x86 structure.
- Don't create 'ithd' and 'intrec' typedefs, instead, just use 'struct ithd'
  and 'struct intrec'
- Move the code to translate new-bus interrupt flags into an interrupt thread
  priority out of the x86 nexus code and into a MI ithread_priority()
  function in sys/kern/kern_intr.c.
- Remove now-uneeded x86-specific headers from sys/dev/ata/ata-all.c and
  sys/pci/pci_compat.c.
2000-09-13 18:33:25 +00:00
Bruce Evans
d3f209631e Be more careful about cleaning up the stack after function calls early
in the boot.  The cleanup must be done in one of the few ways that
db_numargs() understands, so that early backtraces in ddb don't underrun
the stack.  The underruns caused reboots a few years ago when there
was an unmapped page above the stack (trapping to abort the command
doesn't work early).

Cleaned up some nearby code.
2000-09-13 14:08:50 +00:00
Bruce Evans
9c15b3c143 Fixed hang on booting with -d. mtx_enter() was called on an uninitialized
lock.  The quick fix in trap.c was not quite the version tested and had no
effect; back it out.
2000-09-13 12:40:43 +00:00
Mike Smith
358637397e A new driver for PCI:SCSI RAID controllers based on the Adaptec FSA
design.  This includes integrated Dell RAID controllers, the Dell
PERC 2/QC and the HP NetRAID-4M.
2000-09-13 03:20:35 +00:00
John Baldwin
77044cb6d9 Clean up process accounting some more. Unfortunately, it is still not
quite right on i386 as the CPU who runs statclock() doesn't have a valid
clockframe to calculate statistics with.
2000-09-12 18:57:59 +00:00
Bruce Evans
bbbb2579b4 Quick fix for hang on booting with -d. mtx_enter() was called before
curproc was initialized.  curproc == NULL was interpreted as matching
the process holding Giant...  Just skip mtx_enter() and mtx_exit() in
trap() if (curproc == NULL && cold) (&& cold for safety).
2000-09-12 18:41:56 +00:00
Bruce Evans
d511196c02 Don't panic for delivery of a multiplexed SWI. Most SWI handlers
don't take an arg, but swi_generic() is special in order to avoid one
whole conditional branch in the old SWI dispatch code.  The new SWI
dispatch code passed it a garbage arg.  Bypass swi_generic() and call
swi_dispatcher() directly, like the corresponding alpha code has always
done.

The panic was rare because because it only occurred if more than one
of the {sio,cy,rc} drivers was configured and one was active, and the
cy driver doesn't even compile.
2000-09-12 16:02:43 +00:00
Mark Murray
ac519db05b Turn the /dev/random device into a (pseudo-)device, not an option.
(I didn't realise that it was this easy!)
Submitted by:	jhb
2000-09-12 13:21:40 +00:00
Bill Fumerola
eaeac22d2c Move tx to the list of drivers that now require miibus. 2000-09-11 21:20:39 +00:00
John Baldwin
b162b45509 When doing statistics for statclock on other CPU's, use the other CPUs'
idleproc pointers instead of our own for comparisons.

Submitted by:	tegge
2000-09-11 04:10:29 +00:00
Jason Evans
5340642a2e Style cleanups. No functional changes. 2000-09-09 23:18:48 +00:00
Jason Evans
46bf3fe5a6 Add file and line arguments to WITNESS_ENTER() and WITNESS_EXIT, since
__FILE__ and __LINE__ don't get expanded usefully in inline functions.

Add const to all witness*() arguments that are filenames.
2000-09-09 22:43:22 +00:00
Jason Evans
12473b76dc Rename mtx_enter(), mtx_try_enter(), and mtx_exit() and wrap them with cpp
macros that expand to pass filename and line number information.  This is
necessary since we're using inline functions instead of macros now.

Add const to the filename pointers passed througout the mtx and witness
code.
2000-09-08 21:48:06 +00:00
John Baldwin
1baab78f9e Remove an unneeded extern declaration of cp_time. 2000-09-08 20:18:29 +00:00
Jake Burkholder
4ef34f39ec Really fix USER_LDT. (Don't use currentldt as an L-value.) 2000-09-08 03:36:09 +00:00
Jake Burkholder
88f4c2a1d6 Don't use currentldt as an L-value.
This should fix options USER_LDT.

Reported-by:	John Hay <jhay@zibbi.mikom.csir.co.za>
		Nickolay Dudorov <nnd@mail.nsk.ru>
2000-09-07 20:12:12 +00:00
John Baldwin
746a935474 Test for both SMP and I386_CPU being set before generating an error. 2000-09-07 16:10:02 +00:00
Yoshihiro Takahashi
f69dfaede1 Don't assume that address of I/O address table increase (PC-98 only).
Pointed out by:	Tomokazu HARADA <tkhara@osk4.3web.ne.jp>
2000-09-07 14:43:00 +00:00
Jason Evans
0384fff8c5 Major update to the way synchronization is done in the kernel. Highlights
include:

* Mutual exclusion is used instead of spl*().  See mutex(9).  (Note: The
  alpha port is still in transition and currently uses both.)

* Per-CPU idle processes.

* Interrupts are run in their own separate kernel threads and can be
  preempted (i386 only).

Partially contributed by:	BSDi (BSD/OS)
Submissions by (at least):	cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
Jason Evans
62ae6c89ad Add KTR, a facility that logs kernel events in order to to facilitate
debugging.

Acquired from:	BSDi (BSD/OS)
Submitted by:	dfr, grog, jake, jhb
2000-09-07 01:29:44 +00:00
Poul-Henning Kamp
819e370c3b Introduce atomic_cmpset_int() and atomic_cmpset_long() from SMPng a
few hours earlier than the rest.

The next DEVFS commit needs these functions.

Alpha versions by: dfr
i386 versions by: jakeb

Approved by:    SMPng
2000-09-06 11:21:14 +00:00
Mike Smith
877aa18bbf Teach the NFS && NFS_ROOT case how to pick up information left by the
PXE loader, and use this to build the nfs_diskless structure.
2000-09-05 22:34:11 +00:00
Peter Wemm
4d8ea19f7c Catch a few more bogosities in certain chipsets before they mess us up.
Some have dual host->PCI bridges for the same logical pci bus (!), eg:
some of the RCC chipsets.  This is a 32/64 bit 33/66MHz and dual pci
voltage motherboard so persumably there are electical or signalling
differences but they are otherwise the same logical bus.
The new PCI probe code however was getting somewhat upset about it and
ended up creating two pci bridges to the same logical bus, which caused
devices on that logical bus to appear and be probed twice.

The ACPI data on this box correctly identifies this stuff, so bring on
ACPI! :-)
2000-09-05 00:53:34 +00:00
Peter Wemm
da65de1dee Complain if we cannot find loader(8) metadata. 2000-09-03 04:13:03 +00:00
Mike Smith
ef137fd32f Add the 'asr' driver, supplied by Mark Salyzyn of Adaptec (nee DPT).
This provides support for the Adaptec SCSI RAID controller family,
as well as the DPT SmartRAID V and VI families.

The driver will be maintained by Mark and Adaptec, and any changes
should be referred to the MAINTAINER.
2000-09-01 07:51:25 +00:00
Peter Wemm
280b4748af Take a shot at fixing multiple pci busses on i386.
pcib_set_bus() cannot be used on the new child because it is
meant to be used on the *pci* device (it looks at the parent internally)
not the pcib being added.  Bite the bullet and use ivars for the bus
number to avoid any doubts about whether the softc is consistant between
probe and attach.  This should not break the Alpha code.
2000-08-31 23:11:35 +00:00
Takanori Watanabe
b1f12b6157 Merge rest piece of ACPI driver.To activate acpi driver ,add
device acpi

line. Merge finished. But still experimental phase.Need more hack!

Obtained from:ACPI for FreeBSD project
2000-08-31 15:34:54 +00:00
KATO Takenori
1cfd836f65 Improved Cyrix 486DX supports for NEC PC-98.
- Enable WB cache via CCR2 and CR0.
  - Set the need_pre_dma_flush when the CPU_I486_ON_386 option is
    defined.

Submitted by:	Kaho Toshikazu <kaho@elam.kais.kyoto-u.ac.jp>
2000-08-31 10:33:06 +00:00
Doug Rabson
21c3015a24 * Completely rewrite the alpha busspace to hide the implementation from
the drivers.
* Remove legacy inx/outx support from chipset and replace with macros
  which call busspace.
* Rework pci config accesses to route through the pcib device instead of
  calling a MD function directly.

With these changes it is possible to cleanly support machines which have
more than one independantly numbered PCI busses. As a bonus, the new
busspace implementation should be measurably faster than the old one.
2000-08-28 21:48:13 +00:00
Peter Wemm
2422dd7973 Comment out the static wiring of hints for GENERIC - the release process
now installs the hints file into /boot.
2000-08-24 18:56:54 +00:00
Mike Smith
153cbcc323 Add entries for the 'mly' driver. Re-group 'mly' and 'dpt' into a new
classification for RAID controllers that have CAM interfaces.
2000-08-23 03:29:49 +00:00
Poul-Henning Kamp
3f54a085a6 Remove all traces of Julians DEVFS (incl from kern/subr_diskslice.c)
Remove old DEVFS support fields from dev_t.

  Make uid, gid & mode members of dev_t and set them in make_dev().

  Use correct uid, gid & mode in make_dev in disk minilayer.

  Add support for registering alias names for a dev_t using the
  new function make_dev_alias().  These will show up as symlinks
  in DEVFS.

  Use makedev() rather than make_dev() for MFSs magic devices to prevent
  DEVFS from noticing this abuse.

  Add a field for DEVFS inode number in dev_t.

  Add new DEVFS in fs/devfs.

  Add devfs cloning to:
        disk minilayer (ie: ad(4), sd(4), cd(4) etc etc)
        md(4), tun(4), bpf(4), fd(4)

  If DEVFS add -d flag to /sbin/inits args to make it mount devfs.

  Add commented out DEVFS to GENERIC
2000-08-20 21:34:39 +00:00
David Malone
a5c4836d39 Replace the mbuf external reference counting code with something
that should be better.

The old code counted references to mbuf clusters by using the offset
of the cluster from the start of memory allocated for mbufs and
clusters as an index into an array of chars, which did the reference
counting. If the external storage was not a cluster then reference
counting had to be done by the code using that external storage.

NetBSD's system of linked lists of mbufs was cosidered, but Alfred
felt it would have locking issues when the kernel was made more
SMP friendly.

The system implimented uses a pool of unions to track external
storage. The union contains an int for counting the references and
a pointer for forming a free list. The reference counts are
incremented and decremented atomically and so should be SMP friendly.
This system can track reference counts for any sort of external
storage.

Access to the reference counting stuff is now through macros defined
in mbuf.h, so it should be easier to make changes to the system in
the future.

The possibility of storing the reference count in one of the
referencing mbufs was considered, but was rejected 'cos it would
often leave extra mbufs allocated. Storing the reference count in
the cluster was also considered, but because the external storage
may not be a cluster this isn't an option.

The size of the pool of reference counters is available in the
stats provided by "netstat -m".

PR:		19866
Submitted by:	Bosko Milekic <bmilekic@dsuper.net>
Reviewed by:	alfred (glanced at by others on -net)
2000-08-19 08:32:59 +00:00
Mike Smith
8ade16819d Increase the default NAPIC from 1 to 2 as a bandaid until we allocate
these dynamically (ie. typically you shouldn't have to set NAPIC at all)
2000-08-18 20:09:15 +00:00
Brian S. Dean
39a59b1de6 Don't let an illegal value for dr7 get set, which can lead to an
unexpected TRCTRAP.

Reported by: John W. De Boskey <jwd@FreeBSD.org>
2000-08-17 14:35:23 +00:00
Tor Egge
d9b05734cc Prepare for a cleanup of pmap module API pollution introduced by the
suggested fix in PR 12378.

Keep track of all existing pmaps independent of existing processes.

This allows for a process to temporarily connect to a different address
space without the risk of missing an update of the original address space if
the kernel grows.

pmap_pinit2() is no longer needed on the i386 platform but is left as a
stub until the alpha pmap code is updated.

PR:		12378
2000-08-16 21:24:44 +00:00
John Baldwin
597d9a21d9 Include machine/cputypes.h so we get the cpu_class variable. This is needed
if I386_CPU is defined in the kernel config file.
2000-08-13 05:17:46 +00:00
Peter Wemm
37b087a645 Clean up some low level bootstrap code:
- stop using the evil 'struct trapframe' argument for mi_startup()
  (formerly main()).  There are much better ways of doing it.
- do not use prepare_usermode() - setregs() in execve() will do it
  all for us as long as the p_md.md_regs pointer is set.  (which is
  now done in machdep.c rather than init_main.c.  The Alpha port did it
  this way all along and is much cleaner).
- collect all the magic %cr0 etc register settings into one place and
  have the AP's call that instead of using magic numbers (!!) that keep
  changing over and over again.
- Make it safe to call kthread_create() earlier, including during the
  device probe sequence.  It doesn't need the callback mechanism that
  NetBSD's version uses.
- kthreads created this way are root-less as they exist before the root
  filesystem is mounted.  init(1) is set up so that it aquires the root
  pointers prior to running.  If other kthreads want filesystem acccess
  we can make this code more generic.
- set all threads start times once we have decided what time it is.
- init uses a trampoline rather than the evil prepare_usermode() hack.
- kern_descrip.c has a couple of tweaks to deal with forking when there
  is no rootdir or cwd etc.
- adjust the early SYSINIT() sequence so that a few prereqisites are in
  place. eg: make sure the run queue is initialized before doing forks.

With this, the USB code can easily create a kthread to do the device
tree discovery.  (I have tested it, it works nicely).

There are still some open issues before this is truely useful.
- tsleep() does not like working before the clock is running.  It
  sort-of tries to spin wait, but it can do more useful things now.
- stopping a kthread in kld code at unload time is "interesting" but
  we have a solution for that.

The Alpha code needs no changes for this.  It already uses pretty much the
same strategies, but a little cleaner.
2000-08-11 09:05:12 +00:00
Tor Egge
4428d39d63 Don't skip IOAPIC id conflict detection when only one pci bus is present.
PR:		20312
Reviewed by:	Steve Roome <steve@sse0691.bri.hp.com>
2000-08-10 17:33:24 +00:00
Tor Egge
5d25b0f6fb Add workaround for livelock problem when starting APs.
With more than 1 AP present, an AP could fail to properly release
the mp lock before waiting for smp_started to become nonzero.

With early startup of APs, the BSP could fail to properly release
the mp lock before waiting for smp_started to become nonzero.
2000-08-07 02:28:37 +00:00
Paul Saab
c206a8609e Change the behavior of isa_nmi to log an error message instead of
panicing and return a status so that we can decide whether to drop
into DDB or panic.  If the status from isa_nmi is true, panic the
kernel based on machdep.panic_on_nmi, otherwise if DDB is
enabled, drop to DDB based on machdep.ddb_on_nmi.

Reviewed by:	peter, phk
2000-08-06 14:17:21 +00:00
Tor Egge
e666f57c3e Be more verbose when changing APIC ID on an IO APIC.
Don't allow cpu entries in the MP table to contain APIC IDs out of range.

Don't write outside array boundaries if an IO APIC entry in the MP table
contains an APIC ID out of range.

Assign APIC IDs for all IO APICs according to section 3.6.6 in the
Intel MP spec:

  - If the current APIC ID on an IO APIC doesn't conflict with other
    IO APICs or CPUs, that APIC ID should be used.  The copy of the MP
    table must be updated if the corresponding APIC ID in the MP table
    is different.

  - If the current APIC ID was in conflict with other units, the
    corresponding APIC ID specified in the MP table is checked for conflict.

  - If a conflict is still found then fall back to using a new unique ID.
    The copy of the MP table must be updated.

  - IDs out of range is considered to be in conflict.

During these operations, the IO_TO_ID array cannot be used, since any
conflict would have caused information loss.  The array is then corrected,
since all APIC ID conflicts should have been resolved.

PR:	20312, 18919
2000-08-06 00:04:03 +00:00
Luoqi Chen
3fb50adb4c Handle write page faults (both write only or read-modify-write) as MI vm
write-only faults.  This would allow write-only mmapped regions to function
correctly.
2000-07-31 14:47:14 +00:00
Poul-Henning Kamp
0825a8a33f Allow use of TSC even if APM is compiled in but disabled. 2000-07-30 21:05:22 +00:00
David E. O'Brien
ff6804717c Revert previous commit. Not all RAID controllers are SCSI. 2000-07-29 02:12:44 +00:00
David E. O'Brien
c79ef5d331 Move the RAID controllers next to the SCSI controllers. 2000-07-29 02:00:28 +00:00
David E. O'Brien
cf10fa4fcd Comment out ncr' as sym' handles all that `ncr' does.
(only commented out to make it easy for people to find it that really
 wants it.)

Asked for by:	Peter
2000-07-29 01:31:09 +00:00
Peter Wemm
abe0ccd784 Fix warning - isa/isavar.h is a prerequisite for isa/pnpvar.h 2000-07-28 22:58:28 +00:00
Bill Fumerola
78a40870e5 s%LINT%NOTES%g 2000-07-25 08:25:48 +00:00
Warner Losh
b16ba28faf Default the pcic to polling. Some laptops need to have polling mode
due to a paucity of IRQs.  I have some reservations about this, so I'm
not going to MFC this just yet.  I'm doing this to see how many
problems it causes so we can do this in 4.2.  I've been seeing hangs
on my laptop from time to time, but sometimes it was not in polling
mode, other tmies it was.  Don't know if this is one problem or more
than one.

Requested by: Sean O Connell
2000-07-19 16:32:38 +00:00
Paul Saab
88f675ba30 Change the way NMI's are handled. Before, if DDB was enabled and
a NMI occured, you could type continue in DDB and the kernel would
not attempt to detect what type of NMI was recieved.  Now we check
for the type of NMI first and then go to DDB if it is enabled.

This will solve the problem with having DDB enabled and getting an
NMI due to some possibly bad error and being able to continue the
operation of the kernel when you really want to panic and know
what happened.

Submitted by:	jhb
2000-07-14 11:49:44 +00:00
Seigo Tanimura
fb0ef52838 Finally merge newmidi.
(I had been busy for my own research activity until the last weekend)

Supported devices:

SB Midi Port			(sbc + midi)
SB OPL3				(sbc + midi)
16550 UART			(midi, needs a trick in your hint)
CS461x Midi Port		(csa + midi)

OSS-compatible sequencer	(seq)

Supported playing software:

playmidi			(We definitely need more)

Notes:

/dev/midistat now reports installed midi drivers. /dev/sndstat reports
only pcm drivers. We need the new name(pcmstat?).

EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3
synth on an AWE card works.

TODO:

MSS/PCI bridge drivers
Midi-tty interface to support general serial devices
Modules
2000-07-11 11:49:33 +00:00
Matt Jacob
08a7e04845 Removing commented out devices I added. 2000-07-10 15:18:20 +00:00
Kris Kennaway
26eaf5dcb8 Don't call printf with no format string.
Reviewed by:	msmith
2000-07-10 05:51:56 +00:00
Matt Jacob
62d132e3ab Oops- remove the '0' appended to targbh. 2000-07-08 07:05:40 +00:00
Matt Jacob
94ad21f31a Add in the commented out SCSI device entries of
#device         ses             # SCSI Environmental Services (and SAF-TE)
#device         targ            # SCSI Target Mode Code
#device         targbh0         # SCSI Target Mode Blackhole Device
#define         pt              # SCSI Processor Target Device

so that people know that they are there.
2000-07-08 07:02:58 +00:00
Poul-Henning Kamp
77978ab8bc Previous commit changing SYSCTL_HANDLER_ARGS violated KNF.
Pointed out by:	bde
2000-07-04 11:25:35 +00:00
Kirk McKusick
bdbd3ff7cf Update tags directive to reflect the new location of soft updates
and the reorganization of the eisa directory.
2000-07-04 00:18:43 +00:00
Poul-Henning Kamp
82d9ae4e32 Style police catches up with rev 1.26 of src/sys/sys/sysctl.h:
Sanitize SYSCTL_HANDLER_ARGS so that simplistic tools can grog our
sources:

        -sysctl_vm_zone SYSCTL_HANDLER_ARGS
        +sysctl_vm_zone (SYSCTL_HANDLER_ARGS)
2000-07-03 09:35:31 +00:00
Brian S. Dean
c6d3f3bfc1 Fix my own style bugs (use of spaces instead of tabs for indentation).
This is a style-only change.
2000-07-01 02:40:13 +00:00
Mark Murray
8567cb9f5d Duh. Fix a fatfingered patch. 2000-06-25 19:06:48 +00:00
Mark Murray
493c240c48 Fix an uninitialised variable and a function return value.
Reported by:	dillon
2000-06-25 17:26:47 +00:00
Mark Murray
15bbdecf2e Get the build bits right for the new Architecture Independant null- and
entropy drivers.
Reviewed by:	dfr(mostly)
2000-06-25 09:18:13 +00:00
Mark Murray
5afffbaa08 Strip out the machine-independant parts of the memory device.
/dev/(u)random, /dev/null, /dev/zero are all moving to machine-independant
drivers.
Reviewed by:	dfr
2000-06-25 09:08:27 +00:00
Steve Passe
80940373ed Fixed atpic_attach() for the SMP (specifically APIC_IO) case.
Approved by:	msmith@freebsd.org
2000-06-24 23:55:38 +00:00
Mike Smith
bb9c06c1ce Make the PnP 'slopsucker' quiet in the !bootverbose case - the real NPX
probe happens much earlier, and may come to very different conclusions
about the system's NPX setup.
2000-06-23 08:19:50 +00:00
Mike Smith
49b66ff559 Add a stub driver to consume the PnP "system resource" items, and hide
them in the !bootverbose case.
2000-06-23 08:18:53 +00:00
Mike Smith
2a50a6d730 Add PnP probe methods to some common AT hardware drivers. In each case,
the PnP probe is merely a stub as we make assumptions about some of this
hardware before we have probed it.

Since these devices (with the exception of the speaker) are 'standard',
suppress output in the !bootverbose case to clean up the probe messages
somewhat.
2000-06-23 07:44:33 +00:00
Mike Smith
93e5f19e07 Stop trying to do anything funny with the interrupt resource range. The
AT PIC will consume IRQ 2 correctly in the !APIC_IO case.
2000-06-23 07:38:24 +00:00
Peter Wemm
bc26591656 Add SOFTUPDATES to GENERIC (BOOTMFS has this filtered out) 2000-06-22 06:01:02 +00:00
Poul-Henning Kamp
4bd02a5609 Add disk_enumerate() for finding names of disks. Vinum and libh will
need this RSN.

Remove a pointless warning in the root device locating code.

Remove the "wd" compatibility name from the "ad" driver.

WARNING: If you have not updated to use /dev/wd* in your /etc/fstab
and modern bootblocks, it would be a very good idea to do so BEFORE
you upgrade your kernel.
2000-06-15 20:30:53 +00:00
Bruce Evans
933aec2f75 Fixed syntax errors and style bugs in previous commit. The syntax
errors were normally harmless because they were in unreachable code
and gcc apparently doesn't check the syntax inside asm statements
that it optimizes away.
2000-06-14 18:48:39 +00:00
Peter Wemm
1c3b2e3b7d s/iomem/maddr/ - these were generated from an older verion of the
gethints script. :-(
2000-06-14 10:01:39 +00:00
Peter Wemm
f71c01cc52 Borrow phk's axe and apply the next stage of config(8)'s evolution.
Use Warner Losh's "hint" driver to decode ascii strings to fill the
resource table at boot time.

config(8) no longer generates an ioconf.c table - ie: the configuration
no longer has to be compiled into the kernel.  You can reconfigure your
isa devices with the likes of this at loader(8) time:
  set hint.ed.0.port=0x320

userconfig will be rewritten to use this style interface one day and will
move to /boot/userconfig.4th or something like that.

It is still possible to statically compile in a set of hints into a kernel
if you do not wish to use loader(8).  See the "hints" directive in GENERIC
as an example.

All device wiring has been moved out of config(8).  There is a set of
helper scripts (see i386/conf/gethints.pl, and the same for alpha and pc98)
that extract the 'at isa? port foo irq bar' from the old files and produces
a hints file.  If you install this file as /boot/device.hints (and update
/boot/defaults/loader.conf - You can do a build/install in sys/boot) then
loader will load it automatically for you.  You can also compile in the
hints directly with:  hints "device.hints"  as well.

There are a few things that I'm not too happy with yet.  Under this scheme,
things like LINT would no longer be useful as "documentation" of settings.
I have renamed this file to 'NOTES' and stored the example hints strings
in it.  However... this is not something that config(8) understands, so
there is a script that extracts the build-specific data from the
documentation file (NOTES) to produce a LINT that can be config'ed and
built.  A stack of man4 pages will need updating. :-/

Also, since there is no longer a difference between 'device' and
'pseudo-device' I collapsed the two together, and the resulting 'device'
takes a 'number of units' for devices that still have it statically
allocated.  eg:  'device fe 4' will compile the fe driver with NFE set
to 4.  You can then set hints for 4 units (0 - 3).  Also note that
'device fe0' will be interpreted as "zero units of 'fe'" which would be
bad, so there is a config warning for this.  This is only needed for
old drivers that still have static limits on numbers of units.
All the statically limited drivers that I could find were marked.

Please exercise EXTREME CAUTION when transitioning!

Moral support by: phk, msmith, dfr, asmodai, imp, and others
2000-06-13 22:28:50 +00:00
KATO Takenori
8f4b3d8c63 Recognize Coppermine Celeron processors whose CPU ID = 0x68?. They
were recognized as "Pentium III/Pentium III Xeon."
2000-06-13 12:33:45 +00:00
KATO Takenori
65cbb03cfe Added new options CPU_PPRO2CELERON and CPU_L2_LATENCY to support
Socket 8 to 370 converters.  When (1) CPU_PPRO2CELERON option is
defined, (2) Intel CPU is found and (3) CPU ID is 0x66?, L2 cache is
enabled through MSR 0x11e.  The L2 cache latency value can be
specified by CPU_L2_LATENCY option.  Default value of L2 cache latency
is 5.

These options are useful if you use Socket 8 to Socket 370 converter
(e.g. Power Leap's PL-Pro/II.)  Most PentiumPro BIOSs don't enable L2
cache of Mendocino Celeron CPUs because they don't know Celeron CPUs.
These options are needles if you use a Coppermine (FCPGA) Celeron or
PentiumIII, becuase the L2 cache enable bit is hard wired and L2 cache
is always enabled.
2000-06-13 09:10:37 +00:00