Commit Graph

2385 Commits

Author SHA1 Message Date
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