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Commit Graph

11169 Commits

Author SHA1 Message Date
Sam Leffler
a3393da7bf fix build: when usb was enabled wireless drivers were brought in so
remove the nodevice lines that elided wlan support
2007-11-03 19:26:49 +00:00
Andrew Thompson
c596337ff8 Remove zyd as wireless is not supported on PAE. 2007-11-03 07:11:07 +00:00
Alan Cox
6afd4b92f7 Eliminate spurious "Approaching the limit on PV entries, ..."
warnings.  Specifically, whenever vm_page_alloc(9) returned NULL to
get_pv_entry(), we issued a warning regardless of the number of pv
entries in use.  (Note: The older pv entry allocator in RELENG_6 does
not have this problem.)

Reported by:	Jeremy Chadwick

Eliminate the direct call to pagedaemon_wakeup() by get_pv_entry().
This was a holdover from earlier times when the page daemon was
responsible for the reclamation of pv entries.

MFC after: 5 days
2007-11-03 05:15:26 +00:00
Peter Wemm
c8b14fa8f0 Move nvram out of DEFAULTS. There really isn't a lot of justification
for consuming the memory.  The module works just fine in the unlikely
case that this is needed.  It can still be compiled into a custom kernel.
2007-10-29 22:19:08 +00:00
John Baldwin
8518d50a63 - Add constants for the different memory types in the SMAP table.
- Use the SMAP types and constants from <machine/pc/bios.h> in the boot
  code rather than duplicating it.
2007-10-28 21:23:49 +00:00
Peter Wemm
d556638404 Split /dev/nvram driver out of isa/clock.c for i386 and amd64. I have not
refactored it to be a generic device.
Instead of being part of the standard kernel, there is now a 'nvram' device
for i386/amd64.  It is in DEFAULTS like io and mem, and can be turned off
with 'nodevice nvram'.  This matches the previous behavior when it was
first committed.
2007-10-26 03:23:54 +00:00
Warner Losh
97816f8e3d Add usb serial devices by default. I'm tired of telling people how to
do this that should know better :-).
2007-10-26 02:20:29 +00:00
John Baldwin
e0f5da6d08 Update copyright attribution.
MFC after:	3 days
2007-10-24 21:16:22 +00:00
Robert Watson
30d239bc4c Merge first in a series of TrustedBSD MAC Framework KPI changes
from Mac OS X Leopard--rationalize naming for entry points to
the following general forms:

  mac_<object>_<method/action>
  mac_<object>_check_<method/action>

The previous naming scheme was inconsistent and mostly
reversed from the new scheme.  Also, make object types more
consistent and remove spaces from object types that contain
multiple parts ("posix_sem" -> "posixsem") to make mechanical
parsing easier.  Introduce a new "netinet" object type for
certain IPv4/IPv6-related methods.  Also simplify, slightly,
some entry point names.

All MAC policy modules will need to be recompiled, and modules
not updates as part of this commit will need to be modified to
conform to the new KPI.

Sponsored by:	SPARTA (original patches against Mac OS X)
Obtained from:	TrustedBSD Project, Apple Computer
2007-10-24 19:04:04 +00:00
John Baldwin
5c5b5d4607 Slightly cleanup the 'bootdev' concept on x86 by changing the various
macros to treat the 'slice' field as a real part of the bootdev instead
of as hack that spans two other fields (adaptor (sic) and controller)
that are not used in any modern FreeBSD boot code.

MFC after:	1 week
2007-10-24 04:03:25 +00:00
John Baldwin
7e68ed1218 Stop disabling USB in the PAE kernel config. The USB code has been
using bus_dma(9) for quite a while now and has been used on 64-bit archs
as well.

MFC after:	1 month
2007-10-24 03:53:10 +00:00
Julian Elischer
3745c395ec Rename the kthread_xxx (e.g. kthread_create()) calls
to kproc_xxx as they actually make whole processes.
Thos makes way for us to add REAL kthread_create() and friends
that actually make theads. it turns out that most of these
calls actually end up being moved back to the thread version
when it's added. but we need to make this cosmetic change first.

I'd LOVE to do this rename in 7.0  so that we can eventually MFC the
new kthread_xxx() calls.
2007-10-20 23:23:23 +00:00
Bjoern A. Zeeb
2b3e7485f6 Fold multiple asm statements into one so that the compiler at a certain
optimization level (-march=pentium-mmx for example) does not insert
intermediate ops which would trash the carry.

Change both sys/i386/i386/in_cksum.c[1] and sys/i386/include/in_cksum.h.

To my best understanding the same problem was addressed in rev. 1.16
of src/sys/i386/include/in_cksum.h for just a single function 3y ago.

Reviewed by:  jhb
Submitted by: Zhouyi ZHOU <zhouzhouyi FreeBSD.org> (intial version of [1])
MFC after:    5 days
PR:           115678, 69257
2007-10-20 22:18:42 +00:00
Ken Smith
95b55771b2 Switch over to ULE as the default scheduler for amd64 and i386
architectures.
2007-10-19 12:30:33 +00:00
Alexander Leidinger
9f05d312b3 Backout sensors framework.
Requested by:	phk
Discussed on:	cvs-all
2007-10-15 20:00:24 +00:00
Alexander Leidinger
989500bf1a Import it(4) and lm(4), supporting most popular Super I/O Hardware Monitors.
Submitted by:	Constantine A. Murenin <cnst@FreeBSD.org>
Sponsored by:	Google Summer of Code 2007 (GSoC2007/cnst-sensors)
Mentored by:	syrinx
Tested by:	many
OKed by:	kensmith
Obtained from:	OpenBSD (parts)
2007-10-14 10:55:50 +00:00
Marius Strobl
55aaf894e8 Make the PCI code aware of PCI domains (aka PCI segments) so we can
support machines having multiple independently numbered PCI domains
and don't support reenumeration without ambiguity amongst the
devices as seen by the OS and represented by PCI location strings.
This includes introducing a function pci_find_dbsf(9) which works
like pci_find_bsf(9) but additionally takes a domain number argument
and limiting pci_find_bsf(9) to only search devices in domain 0 (the
only domain in single-domain systems). Bge(4) and ofw_pcibus(4) are
changed to use pci_find_dbsf(9) instead of pci_find_bsf(9) in order
to no longer report false positives when searching for siblings and
dupe devices in the same domain respectively.
Along with this change the sole host-PCI bridge driver converted to
actually make use of PCI domain support is uninorth(4), the others
continue to use domain 0 only for now and need to be converted as
appropriate later on.
Note that this means that the format of the location strings as used
by pciconf(8) has been changed and that consumers of <sys/pciio.h>
potentially need to be recompiled.

Suggested by:	jhb
Reviewed by:	grehan, jhb, marcel
Approved by:	re (kensmith), jhb (PCI maintainer hat)
2007-09-30 11:05:18 +00:00
Christian Brueffer
4fabde5686 Use the correct expanded name for SCTP.
PR:		116496
Submitted by:	koitsu
Reviewed by:	rrs
Approved by:	re (kensmith)
2007-09-26 20:05:07 +00:00
Alan Cox
7bfda801a8 Change the management of cached pages (PQ_CACHE) in two fundamental
ways:

(1) Cached pages are no longer kept in the object's resident page
splay tree and memq.  Instead, they are kept in a separate per-object
splay tree of cached pages.  However, access to this new per-object
splay tree is synchronized by the _free_ page queues lock, not to be
confused with the heavily contended page queues lock.  Consequently, a
cached page can be reclaimed by vm_page_alloc(9) without acquiring the
object's lock or the page queues lock.

This solves a problem independently reported by tegge@ and Isilon.
Specifically, they observed the page daemon consuming a great deal of
CPU time because of pages bouncing back and forth between the cache
queue (PQ_CACHE) and the inactive queue (PQ_INACTIVE).  The source of
this problem turned out to be a deadlock avoidance strategy employed
when selecting a cached page to reclaim in vm_page_select_cache().
However, the root cause was really that reclaiming a cached page
required the acquisition of an object lock while the page queues lock
was already held.  Thus, this change addresses the problem at its
root, by eliminating the need to acquire the object's lock.

Moreover, keeping cached pages in the object's primary splay tree and
memq was, in effect, optimizing for the uncommon case.  Cached pages
are reclaimed far, far more often than they are reactivated.  Instead,
this change makes reclamation cheaper, especially in terms of
synchronization overhead, and reactivation more expensive, because
reactivated pages will have to be reentered into the object's primary
splay tree and memq.

(2) Cached pages are now stored alongside free pages in the physical
memory allocator's buddy queues, increasing the likelihood that large
allocations of contiguous physical memory (i.e., superpages) will
succeed.

Finally, as a result of this change long-standing restrictions on when
and where a cached page can be reclaimed and returned by
vm_page_alloc(9) are eliminated.  Specifically, calls to
vm_page_alloc(9) specifying VM_ALLOC_INTERRUPT can now reclaim and
return a formerly cached page.  Consequently, a call to malloc(9)
specifying M_NOWAIT is less likely to fail.

Discussed with: many over the course of the summer, including jeff@,
   Justin Husted @ Isilon, peter@, tegge@
Tested by: an earlier version by kris@
Approved by: re (kensmith)
2007-09-25 06:25:06 +00:00
Attilio Rao
c8790f5d09 Fix some entries in the locks static table of witness.
In particular:
- smp_tlb_mtx is no longer used, so it is axed.
- smp rendezvous lock isn't really a leaf spin-mutex. Its bad placement in
  the table, however, has been the source of a false positive LOR reporting
  with the dt_lock.  However, smp rendezvous lock would have had sched_lock
  there for older lock, so it wasn't still a leaf lock.
- allpmaps is only used in ia32 architecture, so it is inserted in the
  appropriate stub.

Addictionally:
- kse_zombie_lock is no longer present, so its definition is axed out.
- zombie_lock doesn't need to have an exported symbol, so just let's it be
  declared as static.

Tested by: kris
Approved by: jeff (mentor)
Approved by: re
2007-09-20 20:38:43 +00:00
Konstantin Belousov
96a2b63525 Fill in cr2 in the signal context from ksi->ksi_addr.
Together with the sys/i386/i386/trap.c rev. 1.306 it fixes the PR.

Submitted by:	rdivacky
Suggested by:	jhb
Sponsored by:	Google Summer of Code 2007
PR:		kern/77710
Approved by:	re (kensmith)
2007-09-20 13:46:26 +00:00
David Malone
e4a76144d0 regen.
Approved by: re (kensmith)
2007-09-18 19:51:49 +00:00
David Malone
3ab8526963 The kernel version of Linux statfs64 is actually supposed to take
3 arguments, but we had forgotten the second argument. Also make the
Linux statfs64 struct depend on the architecture because it has an
extra 4 bytes padding on amd64 compared to i386.

The three argument fix is from David Taylor, the struct statfs64
stuff is my fault. With this patch I can install i386 Linux matlab
on an amd64 machine.

Submitted by: David Taylor <davidt_at_yadt.co.uk>
Approved by: re (kensmith)
2007-09-18 19:50:33 +00:00
Poul-Henning Kamp
f1be017900 Recognize the Soekris NET5501 and configure the error led.
Add watchdog(4) support by using the MFGPT0 in the Geode LX CX5536.
(Supported range: 2^30 .. 2^44 ns = 1s ... 5h)

Approved by:	re (bmah)
2007-09-18 09:19:44 +00:00
Peter Wemm
8bff6a112b Fix an undefined symbol that as/ld neglected to flag as a problem. It
was used in assembler code in such a way that no unresolved relocation
records were generated, so ld didn't flag the problem.   You can see
this with an 'nm' of the kernel.  There will be 'U MAXCPU' on SMP systems.

The impact of this is that the intrcount/intrnames arrays do not have
the intended amount of space reserved.  This could lead to interesting
problems due to the arrays being present in the middle of kernel code.
An overflow would be rather interesting as executable code would be used
as per-cpu incrementing interrupt counters.

This fixes it for now by exporting MAXCPU to the assembler.  A better fix
might be to define these data structures in C - they're only referenced
in the kernel from C code these days anyway.

Approved by:  re (kensmith)
2007-09-17 21:55:28 +00:00
Jeff Roberson
b61ce5b0e6 - Move all of the PS_ flags into either p_flag or td_flags.
- p_sflag was mostly protected by PROC_LOCK rather than the PROC_SLOCK or
   previously the sched_lock.  These bugs have existed for some time.
 - Allow swapout to try each thread in a process individually and then
   swapin the whole process if any of these fail.  This allows us to move
   most scheduler related swap flags into td_flags.
 - Keep ki_sflag for backwards compat but change all in source tools to
   use the new and more correct location of P_INMEM.

Reported by:	pho
Reviewed by:	attilio, kib
Approved by:	re (kensmith)
2007-09-17 05:31:39 +00:00
Attilio Rao
0b2e598c14 This is a follow-up, cleaning-up commit about recent changes involving
topology foo functions.
Working at the patch for topology problems in ia32/amd64 evicted some
problems regarding functions ordering in the SI_SUB_CPU family of
SYSINIT'ed subsystems.
In order to avoid problems with new modified to involved functions, a
correct ordering is not semantically specified for SI_SUB_CPU functions
(for a larger view of the issue please visit:
http://lists.freebsd.org/pipermail/freebsd-current/2007-July/075409.html )

Discussed with: peter
Tested by: kris, Rui Paulo <rpaulo@FreeBSD.org>
Approved by: jeff
Approved by: re
2007-09-11 22:54:09 +00:00
Yoshihiro Takahashi
7b226dfaa8 Fix a kernel panic due to a NULL pointer access on pc98.
When any PnP device exists, isa_release_resource() is called with no
activated resource.  So a bushandle is not allocated yet.

Approved by:	re (kensmith)
2007-09-01 12:18:28 +00:00
Konstantin Belousov
0e6ed4feab Regenerate.
Approved by:	re (kensmith)
2007-08-28 12:36:23 +00:00
Konstantin Belousov
b6e645c90f Implement fake linux sched_getaffinity() syscall to enable java to work
with Linux 2.6 emulation. This shall be reimplemented once FreeBSD gets
native scheduler affinity syscalls.

Submitted by:	rdivacky
Reviewed by:	jkim
Sponsored by:	Google Summer of Code 2007
Approved by:	re (kensmith)
2007-08-28 12:26:35 +00:00
Joseph Koshy
ea49750231 Assign sizes to assembly language support functions.
Approved by:	re (kensmith)
2007-08-22 05:06:14 +00:00
Joseph Koshy
298889efcb Define an END() macro for use in i386 and amd64 assembly code, akin
to the one available on the ia64, sparc64, and sun4v architectures.

Approved by:	re (kensmith)
2007-08-22 04:26:07 +00:00
Alan Cox
8beae25391 In general, when we map a page into the kernel's address space, we no
longer create a pv entry for that mapping.  (The two exceptions are
mappings into the kernel's exec and pipe submaps.)  Consequently, there is
no reason for get_pv_entry() to dig deep into the free page queues, i.e.,
use VM_ALLOC_SYSTEM, by default.  This revision changes get_pv_entry() to
use VM_ALLOC_NORMAL by default, i.e., before calling pmap_collect() to
reclaim pv entries.

Approved by:	re (kensmith)
2007-08-21 04:59:34 +00:00
Dag-Erling Smørgrav
83d18f2283 Add a driver for the on-die digital thermal sensor found on Intel Core
and newer CPUs (including Core 2 and Core / Core 2 based Xeons).  The
driver attaches to each cpu device and creates a sysctl node in that
device's sysctl context (dev.cpu.N.temperature).  When invoked, the
handler binds to the appropriate CPU to ensure a correct reading.

Submitted by:	Rui Paulo <rpaulo@fnop.net>
Sponsored by:	Google Summer of Code 2007
Tested by:	des, marcus, Constantine A. Murenin, Ian FREISLICH
Approved by:	re (kensmith)
MFC after:	3 weeks
2007-08-15 19:26:03 +00:00
Nate Lawson
3b3f28135f Add "show sysregs" command to ddb. On i386, this gives gdt, idt, ldt,
cr0-4, etc.  Support should be added for other platforms that have a
different set of registers for system use.

Loosely based on: OpenBSD
Approved by:	re
2007-08-09 20:14:35 +00:00
Peter Wemm
b7778ae08f Move mp_topology() from apic_init(i386) and apic_setup_local(amd64) to
cpu_start_mp().  This is after we have read the cpuid registers to
calculate the hyperthreading_cpus value for the sysctl that enables or
disables hyperthread cores.  Change mp_topology() to use that information
rather than trying to do it itself.

This solves the problem of ULE being incorrectly told that dual core
Athlon64 X2 or Operton cpus are hyperthreading cores.  At the very least,
we now have a single piece of code to identify hyperthreading.

Obtained from:  jhb
Approved by:  re (kensmith)
2007-08-02 21:17:58 +00:00
David Malone
9be70a793e It seems that some i386 mothermoards either do not implement the
day of week field correctly, or they remember bad values that are
written into the day of week field. For this reason, ignore the day
of week field when reading the clock on i386 rather than bailing if
it is set incorrectly.

Problems were seen on a number of platforms, including VMWare, qemu,
EPIA ME6000, Epox-3PTA and ABIT-SL30T.

This is a slightly different fix to that proposed by Ted in his PR,
but the same basic idea.

PR:		111117
Submitted by:	Ted Faber <faber@lunabase.org>
Approved by:	re (rwatson)
MFC after:	3 weeks
2007-07-27 09:34:42 +00:00
John Baldwin
de016534a8 If the trap number stored in the trapframe is corrupted into a negative
value, then we would use a negative index into the trap_msg[] array
resulting in a nested page fault.  Make the 'type' variable holding the
trap number unsigned to avoid this.

MFC after:	2 weeks
Approved by:	re (rwatson)
2007-07-26 15:32:55 +00:00
David Malone
6d8617d42a If clock_ct_to_ts fails to convert time time from the real time clock,
print a one line error message. Add some comments on not being able to
trust the day of week field (I'll act on these comments in a follow up
commit).

Approved by:	re
MFC after:	3 weeks
2007-07-23 09:42:32 +00:00
Attilio Rao
52739c2d25 i386_set_ioperm, i386_get_ldt and i386_set_ldt are now MPSAFE
(Giant/sched_lock free) so remove unuseful Giant cruft.

Approved by: jeff
Approved by: re
Sponsorized by: NGX Italy (http://www.ngx.it)
2007-07-20 08:35:18 +00:00
Jeff Roberson
56a114967b - Add support for blocking and releasing threads to i386 cpu_switch(). This
is required for per-cpu scheduler lock support.

Obtained from:	attilio
Tested by:	current@ many users
Approved by:	re
2007-07-17 22:34:14 +00:00
Matt Jacob
06b642b55d Remove the internal use of __packed and put it on the structures
themselves.

Reviewed by:	nate, peter, warner, robert
Approved by:	re (ken)
2007-07-11 22:34:34 +00:00
Attilio Rao
ea11c140d0 NULL_LDT_BASE is used in !SMP kernels too and set_user_ldt() is not
properly called. Address these two issues.

Reported by: Tinderbox
Tested by: le
Approved by: jeff (mentor)
Approved by: re
2007-07-08 18:17:42 +00:00
Nate Lawson
d73144e778 Now that we have a function that can be called from a cdevsw close()
entry point, use it.

Approved by:	re
2007-07-07 17:54:33 +00:00
Attilio Rao
05dfa22fe9 Actual code shows several problems in ia32 LDT handling:
- When a LDT entry changes, the old one is freed while it is still
  referenced by gdt and ldtr.  This can lead to disruptive behaviours in
  particular on SMP machines.
- When a LDT entry changes, it is assumed that the only one entity sharing
  the same LDT are threads in the same proc.  It doesn't take in account
  edge cases where two processes share the same VM (rfork'ed ones, for
  example).

This patch addresses these two problems and addictionally it fixes the
usage of refcount switching back it to the old manually-grown refcount
(since in this case would be faster).

Diagnosed by: tegge
Tested by: pho (a former version)
Reviewed by: kib
Approved by: jeff (mentor)
Approved by: re
2007-07-07 16:59:01 +00:00
Bjoern A. Zeeb
5b919cdc47 I4B header files were repo-copied from sys/i386/include/ to
sys/i4b/include/ so they will be available to all architectures
once I4B compiles on those.

Approved by:	re (kensmith)
2007-07-06 07:23:39 +00:00
Peter Wemm
e106f3d812 __packed has no effect on u_int8_t's except to cause a warning (and
never has had any effect).

Approved by:  re (rwatson)
2007-07-05 07:28:38 +00:00
Peter Wemm
b811e070b4 Remove pad argument from ftruncate wrapper. Oops.
Approved by: re (kensmith)
2007-07-05 05:32:44 +00:00
Peter Wemm
79d5bdcca5 Don't add the 'pad' argument to the mmap/truncate/etc syscalls.
Submitted by: kensmith
Approved by: re (kensmith)
2007-07-04 23:06:43 +00:00
Bjoern A. Zeeb
118043c6b1 Temporary disconnect i4bing, i4bisppp and i4bipr from the build for
the 7.0 timeframe.

This is needed because I4B is not locked and NET_NEEDS_GIANT goes away.

The plan is to lock I4B and bring everything back for 7.1.

Approved by:	re (kensmith)
2007-07-04 00:18:39 +00:00
Nate Lawson
a1ec53930b Revert previous commit, retaining cpufreq.
Approved by:	re (implicitly)
2007-07-01 22:19:20 +00:00
Nate Lawson
a7b811a620 Add cpufreq(4) to GENERIC. It does not change the frequency by default,
so systems should be relatively unaffected.  Users can then simply enable
powerd(8) in rc.conf to take advantage of it.

Approved by:	re
2007-07-01 21:47:45 +00:00
Alan Cox
ba4b85e482 Pages that do belong to an object and page queue can now be freed without
holding the page queues lock.  Thus, the page table pages released by
pmap_remove() and pmap_remove_pages() can be freed after the page queues
lock is released.

Approved by:	re (kensmith)
2007-07-01 07:08:26 +00:00
Nate Lawson
00a304487f Update the suspend/resume user API while maintaining backwards compat.
Improvements:
* /etc/rc.suspend,rc.resume are always run, no matter the source of the
  suspend request (user or kernel, apm or acpi)
* suspend now requires positive user acknowledgement.  If a user program
  wants to cancel the suspend, they can.  If one of the user programs
  hangs or doesn't respond within 10 seconds, the system suspends anyway.
* /dev/apm is clonable, allowing multiple listeners for suspend events.
  In the future, xorg-server can use this to be informed about suspend
  even if there are other listeners (i.e. apmd).

Changes:
* Two new ACPI ioctls:  REQSLPSTATE and ACKSLPSTATE.  Request begins the
  process of suspending by notifying all listeners.  acpi is monitored by
  devd(8) and /dev/apm listener(s) are also counted.  Users register their
  approval or disapproval via Ack.  If anyone disapproves, suspend is vetoed.
* Old user programs or kernel modules that used SETSLPSTATE continue to
  work.  A message is printed once that this interface is deprecated.
* acpiconf gains the -k flag to ack the suspend request.  This flag is
  undocumented on purpose since it's only used by /etc/rc.suspend.  It is
  not intended to be a permanent change and will be removed once a better
  power API is implemented.
* S5 (power off) is no longer supported via acpiconf -s 5 or apm -z/-Z.
  This restores previous behavior of halt/shutdown -p being the interface.
* Miscellaneous improvements to error reporting

Approved by:	re
2007-06-21 22:50:37 +00:00
Nate Lawson
eb988b9d42 Use bus_dma to get a page in the first 4 GB. Since the physical address
of the magic string is passed in a 32-bit register, we can't use high
memory in the PAE case.  This also eliminates a use of vtophys().

Tested by:	Jeff Shimbo <jts767 / gmail.com>
MFC after:	1 week
2007-06-17 07:18:23 +00:00
Marius Strobl
7a89ac4d26 - Define data of struct gfb_font a const as it's only used to supply font
data and remove the array size from the definition as f.e. the gallant
  12 x 22 font data is 256 * 44 in size, exceeding the previously hard-
  coded size.
- Declare the bold8x16 instance of struct gfb_font as const as it's not
  intended to be changed at run-time as a whole either.
- Use __FBSDID in xboxfb.c

Tested by:	rink
2007-06-16 21:31:53 +00:00
Peter Wemm
5915fb72fb Prototype (but functional) Linux-ish /dev/nvram interface to the extra
114 bytes of cmos ram in the PC clock chip.  The big difference between
this and the Linux version is that we do not recalculate the checksums
for bytes 16..31.

We use this at work when cloning identical machines - we can copy the
bios settings as well.  Reading /dev/nvram gives 114 bytes of data but
you can seek/read/write whichever bytes you like.

Yes, this is a "foot, gun, fire!" type of device.
2007-06-15 22:58:14 +00:00
Xin LI
a2346f7c3c Enable SCTP by default for GENERIC kernels in order to give it
more exposure.  The current state of SCTP implementation is
considered to be ready for 32-bit platforms, but still need some
work/testing on 64-bit platforms.

Approved by:	re (kensmith)
Discussed with:	rrs
2007-06-14 17:14:27 +00:00
John Baldwin
7dba15b72b Don't clobber tf_err with the eva from a page fault as the page fault
address is saved in ksi_addr already.

PR:		i386/101379
Submitted by:	Tijl Coosemans : tijl ulyssis org
2007-06-13 22:37:48 +00:00
Pyun YongHyeon
b5f0caf909 Add nfe(4) to the list of drivers supported by GENERIC kernel.
While I'm here comment out nve(4) as nfe(4) will take over.

Approved by:	re
2007-06-12 02:24:30 +00:00
Andrew Thompson
7302aa80a9 Exclude wlan_scan_* from PAE like the rest of wlan. 2007-06-11 19:29:42 +00:00
Matt Jacob
f2114f3bcd Check against maxsegsz being zero in bus_dma_tag_create and return EINVAL
if it is.

Reviewed by:	scott long
2007-06-11 17:57:24 +00:00
Andrew Thompson
ed3247cea7 Add wlan_scan_ap and wlan_scan_sta to platforms that include wlan. 2007-06-11 08:26:40 +00:00
Marcel Moolenaar
2b39bb4f4f Use default options for default partitioning schemes, rather than
making the relevant files standard. This avoids duplication and
makes it easier to override/disable unwanted schemes. Since ARM
doesn't have a DEFAULTS configuration file, leave the source
files for the BSD and MBR partitioning schemes in files.arm for
now.
2007-06-11 00:38:06 +00:00
Attilio Rao
393a081d42 Optimize vmmeter locking.
In particular:
- Add an explicative table for locking of struct vmmeter members
- Apply new rules for some of those members
- Remove some unuseful comments

Heavily reviewed by: alc, bde, jeff
Approved by: jeff (mentor)
2007-06-10 21:59:14 +00:00
Marcel Moolenaar
01bd17cc99 Add kdb_cpu_sync_icache(), intended to synchronize instruction
caches with data caches after writing to memory. This typically
is required to make breakpoints work on ia64 and powerpc. For
those architectures the function is implemented.
2007-06-09 21:55:17 +00:00
Robert Watson
68d4cc614a Enable AUDIT by default in the GENERIC kernel, allowing security event
auditing to be turned on without a kernel recompile, just an rc.conf
option.

Approved by:	re (kensmith)
Obtained from:	TrustedBSD Project
2007-06-08 20:29:07 +00:00
David Xu
42ce445fed Backout experimental adaptive-spin umtx code. 2007-06-06 07:35:08 +00:00
John Baldwin
ce0b0c05aa Move a warning under bootverbose as no machines that trigger it have ended
up being broken.
2007-06-05 18:57:48 +00:00
Alan Cox
e5c45405f0 Add the machine-specific definitions for configuring the new physical
memory allocator.

Set the size of phys_avail[] and dump_avail[] using one of these
definitions.

Approved by:	re
2007-06-05 05:17:20 +00:00
Jeff Roberson
982d11f836 Commit 14/14 of sched_lock decomposition.
- Use thread_lock() rather than sched_lock for per-thread scheduling
   sychronization.
 - Use the per-process spinlock rather than the sched_lock for per-process
   scheduling synchronization.

Tested by:      kris, current@
Tested on:      i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-05 00:00:57 +00:00
Jeff Roberson
1b1618fb12 - Change comments and asserts to reflect the removal of the global
scheduler lock.

Tested by:      kris, current@
Tested on:      i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-04 23:57:32 +00:00
Jeff Roberson
74aaec43e8 Commit 11/14 of sched_lock decomposition.
- There is no globally visible scheduler lock any longer.  For now the
   watchdog can only check Giant.  This model of checking particular locks
   is flawed and should be revisited.  Other metrics should be considered.

Tested by:      kris, current@
Tested on:      i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-04 23:56:33 +00:00
Jeff Roberson
e4b5aee3a8 Commit 10/14 of sched_lock decomposition.
- Use sched_throw() rather than replicating the same cpu_throw() code for
   each architecture.  This also allows the scheduler to use any locking it
   may want to.
 - Use the thread_lock() rather than sched_lock when preempting.
 - The scheduler lock is not required to synchronize release_aps.

Tested by:      kris, current@
Tested on:      i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
2007-06-04 23:56:08 +00:00
Attilio Rao
6759608248 Rework the PCPU_* (MD) interface:
- Rename PCPU_LAZY_INC into PCPU_INC
- Add the PCPU_ADD interface which just does an add on the pcpu member
  given a specific value.

Note that for most architectures PCPU_INC and PCPU_ADD are not safe.
This is a point that needs some discussions/work in the next days.

Reviewed by: alc, bde
Approved by: jeff (mentor)
2007-06-04 21:38:48 +00:00
David Malone
041b706b2f Despite several examples in the kernel, the third argument of
sysctl_handle_int is not sizeof the int type you want to export.
The type must always be an int or an unsigned int.

Remove the instances where a sizeof(variable) is passed to stop
people accidently cut and pasting these examples.

In a few places this was sysctl_handle_int was being used on 64 bit
types, which would truncate the value to be exported.  In these
cases use sysctl_handle_quad to export them and change the format
to Q so that sysctl(1) can still print them.
2007-06-04 18:25:08 +00:00
Attilio Rao
2feb50bf7d Revert VMCNT_* operations introduction.
Probabilly, a general approach is not the better solution here, so we should
solve the sched_lock protection problems separately.

Requested by: alc
Approved by: jeff (mentor)
2007-05-31 22:52:15 +00:00
Paolo Pisati
3401f2c1df In some particular cases (like in pccard and pccbb), the real device
handler is wrapped in a couple of functions - a filter wrapper and an
ithread wrapper. In this case (and just in this case), the filter
wrapper could ask the system to schedule the ithread and mask the
interrupt source if the wrapped handler is composed of just an ithread
handler: modify the "old" interrupt code to make it support
this situation, while the "new" interrupt code is already ok.

Discussed with: jhb
2007-05-31 19:25:35 +00:00
Konstantin Belousov
9e223287c0 Revert UF_OPENING workaround for CURRENT.
Change the VOP_OPEN(), vn_open() vnode operation and d_fdopen() cdev operation
argument from being file descriptor index into the pointer to struct file.

Proposed and reviewed by:	jhb
Reviewed by:	daichi (unionfs)
Approved by:	re (kensmith)
2007-05-31 11:51:53 +00:00
Dag-Erling Smørgrav
753bcb5c34 Add CPUID2_PDCM
Requested by:	jkim
MFC after:	3 days
2007-05-31 11:26:45 +00:00
Dag-Erling Smørgrav
3da3c3632e Add descriptive comment to PDCM entry. 2007-05-29 19:39:18 +00:00
Dag-Erling Smørgrav
a99f0a4653 Remove a pointless bootverbose message.
MFC after:	3 days
2007-05-29 19:25:50 +00:00
Dag-Erling Smørgrav
cc1eed925f Add feature name for features2 bit 15.
PR:		i386/113133
Submitted by:	Pankov Pavel <pankov_p@mail.ru>
MFC after:	3 days
2007-05-29 19:21:53 +00:00
Attilio Rao
02b0a160dc Fix some problems introduced with the last descriptors tables locking
patch:
- Do the correct test for ldt allocation
- Drop dt_lock just before to call kmem_free (since it acquires blocking
  locks inside)
- Solve a deadlock with smp_rendezvous() where other CPU will wait
  undefinitively for dt_lock acquisition.
- Add dt_lock in the WITNESS list of spinlocks

While applying these modifies, change the requirement for user_ldt_free()
making that returning without dt_lock held.

Tested by: marcus, tegge
Reviewed by: tegge
Approved by: jeff (mentor)
2007-05-29 18:55:41 +00:00
Pyun YongHyeon
590f73f72e Honor maxsegsz of less than a page size in a DMA tag. Previously it
used to return PAGE_SIZE without respect to restrictions of a DMA tag.
This affected all of the busdma load functions that use
_bus_dmamap_loader_buffer() as their back-end.

Reviewed by:	scottl
2007-05-29 06:30:26 +00:00
Hidetoshi Shimokawa
35fafac2ac Enable fwip and dcons in GENERIC. They seem fairly stable.
Note on dcons:
To enable dcons in kernel, put the following lines in /boot/loader.conf.
You may also want to enable dcons in /etc/ttys.

boot_multicons="YES"
#Force dcons to be the high-level console if a firewire bus presents.
#hw.firewire.dcons_crom.force_console=1

FireWire/dcons support in loader will come shortly.
(i386/amd64 only)
2007-05-28 14:38:43 +00:00
Alan Cox
c155d5d059 Eliminate an unused definition. 2007-05-27 20:34:26 +00:00
Robert Watson
2129d3ea2b Remove "XXX Giant" comments before calls to kdb_trap() -- the kernel
debugger is quite capable of handling Giant-free execution at this
point.  Several other similar comments remain in trap.c on both i386
and amd64 awaiting analysis.
2007-05-27 19:16:45 +00:00
Robert Watson
5aabce7698 Don't check curproc->p_comm for NULL as it is an array allocated as part of
struct proc.

Found with:	Coverity Prevent(tm)
CID:		2096
2007-05-27 17:27:59 +00:00
Konstantin Belousov
1c182de9a9 Move futex support code from <arch>/support.s into linux compat directory.
Implement all futex atomic operations in assembler to not depend on the
fuword() that does not allow to distinguish between -1 and failure return.
Correctly return 0 from atomic operations on success.

In collaboration with:	rdivacky
Tested by:	Scot Hetzel <swhetzel gmail com>, Milos Vyletel <mvyletel mzm cz>
Sponsored by:	Google SoC 2007
2007-05-23 08:33:06 +00:00
Alexander Kabaev
23a29e45cd Allow FreeBSD's native ELF image activators to execute shared libraries the
same way it was enabled for Linux binares in linuxulator.

This allows binaries built with -pie. Many ports auto-detect -fPIE support
in GCC 4.2 and build binaries FreeBSD was unable to run.
2007-05-22 02:22:58 +00:00
Jeff Roberson
80b200da28 - rename VMCNT_DEC to VMCNT_SUB to reflect the count argument.
Suggested by:	julian@
Contributed by:	attilio@
2007-05-20 22:33:42 +00:00
Jeff Roberson
0ad5e7f326 - Move GDT/LDT locking into a seperate spinlock, removing the global
scheduler lock from this responsibility.

Contributed by:	Attilio Rao <attilio@FreeBSD.org>
Tested by:	jeff, kkenn
2007-05-20 22:03:57 +00:00
Matt Jacob
2d5f1502fe Initializae lastaddr to 0 in bus_dmamap_load_uio so that
_bus_dmamap_load_buffer won't (potentially) be confused.

Discovered by: gcc 4.2

MFC after:	3 days
2007-05-20 16:53:45 +00:00
Alexander Kabaev
fa298d5ea8 Include machine/pcb.hto turn extern struct pcb stoppcbs[]; construct
into the valid C.
2007-05-19 05:01:43 +00:00
Jeff Roberson
222d01951f - define and use VMCNT_{GET,SET,ADD,SUB,PTR} macros for manipulating
vmcnts.  This can be used to abstract away pcpu details but also changes
   to use atomics for all counters now.  This means sched lock is no longer
   responsible for protecting counts in the switch routines.

Contributed by:		Attilio Rao <attilio@FreeBSD.org>
2007-05-18 07:10:50 +00:00
Kirk McKusick
2f79c90982 Update entries for building tags. 2007-05-13 18:21:54 +00:00
Alexander Kabaev
ec69a8a6d2 Do not dereference linux_to_bsd_signal[-1] if userland has
passed zero as exit signal.

GCC 4.2 changes the kernel data segment layout not to have 0
in that memory location. This code ran by luck before and now
the luck has run out.
2007-05-11 01:25:51 +00:00
Scott Long
f73e86c383 It turns out that the hptiop driver isn't portable after all. Confine it to
amd64 and i386 for now.
2007-05-09 15:55:45 +00:00
Maxim Konovalov
856d5abeed o Fix typo: comments start by "#" not "*". 2007-05-09 11:43:04 +00:00
Scott Long
4439f8b4b6 Introduce a driver for the Highpoint RocketRAID 3xxx series of controllers.
The driver relies on CAM.

Many thanks to Highpoint for providing this driver.
2007-05-09 07:07:26 +00:00
John Baldwin
2e025791ce Handle CPUs with APIC IDs higher than 32 (at least one IBM server uses
an APIC ID of 38 for its second CPU):
- Add a new MAX_APIC_ID constant for the highest valid APIC ID for modern
  systems.
- Size the various arrays in the MADT, MP Table, and SMP code that are
  indexed by APIC IDs to allow for up to MAX_APIC_ID.
- Explicitly go through and assign logical cpu ids to local APICs before
  starting any of the APs up rather than doing it while starting up the
  APs.  This step is now where we honor MAXCPU.

MFC after:	1 week
2007-05-08 22:01:04 +00:00
John Baldwin
fb610ca1f9 Minor fixes and tweaks to the x86 interrupt code:
- Split the intr_table_lock into an sx lock used for most things, and a
  spin lock to protect intrcnt_index.  Originally I had this as a spin lock
  so interrupt code could use it to lookup sources.  However, we don't
  actually do that because it would add a lot of overhead to interrupts,
  and if we ever do support removing interrupt sources, we can use other
  means to safely do so w/o locking in the interrupt handling code.
- Replace is_enabled (boolean) with is_handlers (a count of handlers) to
  determine if a source is enabled or not.  This allows us to notice when
  a source is no longer in use.  When that happens, we now invoke a new
  PIC method (pic_disable_intr()) to inform the PIC driver that the
  source is no longer in use.  The I/O APIC driver frees the APIC IDT
  vector when this happens.  The MSI driver no longer needs to have a
  hack to clear is_enabled during msi_alloc() and msix_alloc() as a result
  of this change as well.
- Add an apic_disable_vector() to reset an IDT vector back to Xrsvd to
  complement apic_enable_vector() and use it in the I/O APIC and MSI code
  when freeing an IDT vector.
- Add a new nexus hook: nexus_add_irq() to ask the nexus driver to add an
  IRQ to its irq_rman.  The MSI code uses this when it creates new
  interrupt sources to let the nexus know about newly valid IRQs.
  Previously the msi_alloc() and msix_alloc() passed some extra stuff
  back to the nexus methods which then added the IRQs.  This approach is
  a bit cleaner.
- Change the MSI sx lock to a mutex.  If we need to create new sources,
  drop the lock, create the required number of sources, then get the lock
  and try the allocation again.
2007-05-08 21:29:14 +00:00
Kevin Lo
dd5ee92cb5 Add rum(4) 2007-05-07 02:06:03 +00:00
Paolo Pisati
bafe5a3118 Bring in the reminaing bits to make interrupt filtering work:
o push much of the i386 and amd64 MD interrupt handling code
  (intr_machdep.c::intr_execute_handlers()) into MI code
  (kern_intr.c::ithread_loop())
o move filter handling to kern_intr.c::intr_filter_loop()
o factor out the code necessary to mask and ack an interrupt event
  (intr_machdep.c::intr_eoi_src() and intr_machdep.c::intr_disab_eoi_src()),
  and make them part of 'struct intr_event', passing them as arguments to
  kern_intr.c::intr_event_create().
o spawn a private ithread per handler (struct intr_handler::ih_thread)
  with filter and ithread functions.

Approved by: re (implicit?)
2007-05-06 17:02:50 +00:00
Kevin Lo
0738dfc386 Add support for Ralink Technology RT2501USB/RT2601USB devices.
Reviewed by: sam, sephe
Obtained from: OpenBSD
2007-05-06 10:07:21 +00:00
Alan Cox
04a18977c8 Define every architecture as either VM_PHYSSEG_DENSE or
VM_PHYSSEG_SPARSE depending on whether the physical address space is
densely or sparsely populated with memory.  The effect of this
definition is to determine which of two implementations of
vm_page_array and PHYS_TO_VM_PAGE() is used.  The legacy
implementation is obtained by defining VM_PHYSSEG_DENSE, and a new
implementation that trades off time for space is obtained by defining
VM_PHYSSEG_SPARSE.  For now, all architectures except for ia64 and
sparc64 define VM_PHYSSEG_DENSE.  Defining VM_PHYSSEG_SPARSE on ia64
allows the entirety of my Itanium 2's memory to be used.  Previously,
only the first 1 GB could be used.  Defining VM_PHYSSEG_SPARSE on
sparc64 allows USIIIi-based systems to boot without crashing.

This change is a combination of Nathan Whitehorn's patch and my own
work in perforce.

Discussed with: kmacy, marius, Nathan Whitehorn
PR:		112194
2007-05-05 19:50:28 +00:00
John Baldwin
e706f7f0c7 Revamp the MSI/MSI-X code a bit to achieve two main goals:
- Simplify the amount of work that has be done for each architecture by
  pushing more of the truly MI code down into the PCI bus driver.
- Don't bind MSI-X indicies to IRQs so that we can allow a driver to map
  multiple MSI-X messages into a single IRQ when handling a message
  shortage.

The changes include:
- Add a new pcib_if method: PCIB_MAP_MSI() which is called by the PCI bus
  to calculate the address and data values for a given MSI/MSI-X IRQ.
  The x86 nexus drivers map this into a call to a new 'msi_map()' function
  in msi.c that does the mapping.
- Retire the pcib_if method PCIB_REMAP_MSIX() and remove the 'index'
  parameter from PCIB_ALLOC_MSIX().  MD code no longer has any knowledge
  of the MSI-X index for a given MSI-X IRQ.
- The PCI bus driver now stores more MSI-X state in a child's ivars.
  Specifically, it now stores an array of IRQs (called "message vectors" in
  the code) that have associated address and data values, and a small
  virtual version of the MSI-X table that specifies the message vector
  that a given MSI-X table entry uses.  Sparse mappings are permitted in
  the virtual table.
- The PCI bus driver now configures the MSI and MSI-X address/data
  registers directly via custom bus_setup_intr() and bus_teardown_intr()
  methods.  pci_setup_intr() invokes PCIB_MAP_MSI() to determine the
  address and data values for a given message as needed.  The MD code
  no longer has to call back down into the PCI bus code to set these
  values from the nexus' bus_setup_intr() handler.
- The PCI bus code provides a callout (pci_remap_msi_irq()) that the MD
  code can call to force the PCI bus to re-invoke PCIB_MAP_MSI() to get
  new values of the address and data fields for a given IRQ.  The x86
  MSI code uses this when an MSI IRQ is moved to a different CPU, requiring
  a new value of the 'address' field.
- The x86 MSI psuedo-driver loses a lot of code, and in fact the separate
  MSI/MSI-X pseudo-PICs are collapsed down into a single MSI PIC driver
  since the only remaining diff between the two is a substring in a
  bootverbose printf.
- The PCI bus driver will now restore MSI-X state (including programming
  entries in the MSI-X table) on device resume.
- The interface for pci_remap_msix() has changed.  Instead of accepting
  indices for the allocated vectors, it accepts a mini-virtual table
  (with a new length parameter).  This table is an array of u_ints, where
  each value specifies which allocated message vector to use for the
  corresponding MSI-X message.  A vector of 0 forces a message to not
  have an associated IRQ.  The device may choose to only use some of the
  IRQs assigned, in which case the unused IRQs must be at the "end" and
  will be released back to the system.  This allows a driver to use the
  same remap table for different shortage values.  For example, if a driver
  wants 4 messages, it can use the same remap table (which only uses the
  first two messages) for the cases when it only gets 2 or 3 messages and
  in the latter case the PCI bus will release the 3rd IRQ back to the
  system.

MFC after:	1 month
2007-05-02 17:50:36 +00:00
Ariff Abdullah
1d80d190af Disable C1 Enhanced mode on AMD K8 Family Revision F and above to keep
local APIC timer alive.

Reviewed by:	jhb
PR:		i386/104678
MFC after:	3 days
2007-04-25 19:58:42 +00:00
John Baldwin
a5b6b9a68e Fix the triple fault used as a last resort during a reboot to actually
fault.  The previous method zero'd out the page tables, invalidated the
TLB, and then entered a spin loop.  The idea was that the instruction after
the TLB invalidate would result in a page fault and the page fault and
subsequent double fault wouldn't be able to determine the physical page
for their fault handlers' first instruction.  This stopped working when
PGE (PG_G PTE/PDE bit) support was added as a TLB invalidate via %cr3
reload doesn't clear TLB entries with PG_G set.  Thus, the CPU was still
able to map the virtual address for the spin loop and happily performed
its infinite loop.

The triple fault now uses a much more deterministic sledge-hammer approach
to generate a triple fault.  First, the IDT descriptor is set to point to
an empty IDT, so any interrupts (including a double fault) will instantly
fault.  Second, we trigger a int 3 breakpoint to force an interrupt and
kick off a triple fault.

MFC after:	3 days
2007-04-24 21:17:45 +00:00
John Baldwin
b72d374cee Update comments for the 0xcf9 and 0x92 reset methods to explain what we are
actually doing and what the various bits mean.
2007-04-24 15:16:27 +00:00
John Baldwin
194617769b Tweak printf string. 2007-04-23 22:53:01 +00:00
Robert Watson
c14d15ae3e Remove MAC Framework access control check entry points made redundant with
the introduction of priv(9) and MAC Framework entry points for privilege
checking/granting.  These entry points exactly aligned with privileges and
provided no additional security context:

- mac_check_sysarch_ioperm()
- mac_check_kld_unload()
- mac_check_settime()
- mac_check_system_nfsd()

Add mpo_priv_check() implementations to Biba and LOMAC policies, which,
for each privilege, determine if they can be granted to processes
considered unprivileged by those two policies.  These mostly, but not
entirely, align with the set of privileges granted in jails.

Obtained from:	TrustedBSD Project
2007-04-22 15:31:22 +00:00
Stephan Uphoff
31b4f4a916 Modify TLB invalidation handling.
Reviewed by:	alc@, peter@
MFC after:	1 week
2007-04-21 14:17:30 +00:00
Stephane E. Potvin
0e5179e441 Add support for specifying a minimal size for vm.kmem_size in the loader via
vm.kmem_size_min. Useful when using ZFS to make sure that vm.kmem size will
be at least 256mb (for example) without forcing a particular value via vm.kmem_size.

Approved by: njl (mentor)
Reviewed by: alc
2007-04-21 01:14:48 +00:00
Poul-Henning Kamp
3f17cc74af style nit 2007-04-19 09:18:51 +00:00
Poul-Henning Kamp
cc76e59ded On AMD's Geode LX: Force the TSC to run through core-suspension so we can
use it as a timecounter.

Sponsored by: Soekris Engineering
2007-04-18 10:08:24 +00:00
John Baldwin
88a5255bc4 Honor the BUS_DMA_NOCACHE flag to bus_dmamem_alloc() on amd64 and i386 by
mapping the pages as UC (uncacheable) using pmap_change_attr().

MFC after:	1 week
Requested by:	ariff
Reviewed by:	scottl
2007-04-17 21:05:34 +00:00
Alan Cox
0b76504872 Eliminate the misuse of PG_FRAME to truncate a virtual address to a virtual
page boundary.

Reviewed by: ru@
2007-04-13 16:07:29 +00:00
Alan Cox
1434c1f34b MFamd64
Define PGEX_RSV.
2007-04-12 17:00:56 +00:00
Ruslan Ermilov
f76f6cfd25 Fix PAE on SMP by enabling EFER_NXE on all APs.
Reported by:	kris
Diagnosed by:	alc
2007-04-12 11:05:24 +00:00
Pawel Jakub Dawidek
fef2a25971 Remove trailing '.' for consistency! 2007-04-10 21:40:13 +00:00
Pawel Jakub Dawidek
57bcf75fd2 Add UFS_GJOURNAL options to the GENERIC kernel.
Approved by:	re (kensmith)
2007-04-10 16:49:41 +00:00
Ruslan Ermilov
2e137367b4 Add the PG_NX support for i386/PAE.
Reviewed by:	alc
2007-04-06 18:15:03 +00:00
Jung-uk Kim
357afa7113 MFP4: Turn emul_lock into a mutex.
Submitted by:	rdivacky
2007-04-02 18:38:13 +00:00
John Baldwin
4e7f640dfb Optimize sx locks to use simple atomic operations for the common cases of
obtaining and releasing shared and exclusive locks.  The algorithms for
manipulating the lock cookie are very similar to that rwlocks.  This patch
also adds support for exclusive locks using the same algorithm as mutexes.

A new sx_init_flags() function has been added so that optional flags can be
specified to alter a given locks behavior.  The flags include SX_DUPOK,
SX_NOWITNESS, SX_NOPROFILE, and SX_QUITE which are all identical in nature
to the similar flags for mutexes.

Adaptive spinning on select locks may be enabled by enabling the
ADAPTIVE_SX kernel option.  Only locks initialized with the SX_ADAPTIVESPIN
flag via sx_init_flags() will adaptively spin.

The common cases for sx_slock(), sx_sunlock(), sx_xlock(), and sx_xunlock()
are now performed inline in non-debug kernels.  As a result, <sys/sx.h> now
requires <sys/lock.h> to be included prior to <sys/sx.h>.

The new kernel option SX_NOINLINE can be used to disable the aforementioned
inlining in non-debug kernels.

The size of struct sx has changed, so the kernel ABI is probably greatly
disturbed.

MFC after:	1 month
Submitted by:	attilio
Tested by:	kris, pjd
2007-03-31 23:23:42 +00:00
Jung-uk Kim
46bd727a1e Correct BB-profiling and adjust comments.
Pointed out by:	bde
Reviewed by:	bde
2007-03-31 01:47:37 +00:00
Jung-uk Kim
6a4abad780 Fix off-by-4 error in address validation for i386, reduce PCB reloading, and
fix more style(9) nits.

Pointed out by:	bde
Discussed with:	kib
Reviewd by:	bde
2007-03-30 23:19:08 +00:00
Jung-uk Kim
80f87d5e55 Fix more style(9) nits[1] and remove unnecessary use of '#if !defined(_KERNEL)'.
Pointed out by:	bde[1]
2007-03-30 19:33:53 +00:00
Jung-uk Kim
6403d3a160 Use the same wisdom of sys/i386/i386/support.s 1.97 to remove obfuscation.
Pointed out by:	bde
2007-03-30 18:27:57 +00:00
Jung-uk Kim
a328699b34 MFP4: Linux futex support for amd64.
Initial patch was submitted by kib and additional work was done
by Divacky Roman.

Tested by:	emulation
2007-03-30 01:07:28 +00:00
Julian Elischer
6734f35eac Implement the openat() linux syscall
Submitted by:	Roman Divacky (rdivacky@)
MFC after:	2 weeks
2007-03-29 02:11:46 +00:00
Nick Hibma
f29fa1dfa4 Revisit the watchdogs: Resetting the error to EINVAL after failing to set the
watchdog might hide the succesful arming of an earlier one. Accept that on
failing to arm any watchdog (because of non-supported timeouts) EOPNOTSUPP is
returned instead of the more appropriate EINVAL.

MFC after:	3 days
2007-03-27 21:03:37 +00:00
Kris Kennaway
67eae018cb Remove unnecessary giant acquisition around panic in #ifdef DIAGNOSTIC
code.

# There is some question about whether this code is even relevant any
# longer (it dates back to prehistoric times, i.e. present in r1.1),
# especially on amd64.

Reviewed by:	jhb
2007-03-26 21:45:44 +00:00
Nate Lawson
0d4ac62a35 Add an interface for drivers to be notified of changes to CPU frequency.
cpufreq_pre_change is called before the change, giving each driver a chance
to revoke the change.  cpufreq_post_change provides the results of the
change (success or failure).  cpufreq_levels_changed gives the unit number
of the cpufreq device whose number of available levels has changed.  Hook
in all the drivers I could find that needed it.

* TSC: update TSC frequency value.  When the available levels change, take the
highest possible level and notify the timecounter set_cputicker() of that
freq.  This gets rid of the "calcru: runtime went backwards" messages.
* identcpu: updates the sysctl hw.clockrate value
* Profiling: if profiling is active when the clock changes, let the user
know the results may be inaccurate.

Reviewed by:	bde, phk
MFC after:	1 month
2007-03-26 18:03:29 +00:00
John Baldwin
9a53f6d97a Fix a silly bogon that broke ibcs2_rename().
CID:		1065
Found by:	Coverity Prevent (tm)
Reported by:	netchild
2007-03-26 15:39:49 +00:00
Alan Cox
8a5e898d63 In order to satisfy ACPI's need for an identity mapping, modify the
temporary mapping created by locore so that the lowest two to four
megabytes can become a permanent identity mapping.  This implementation
avoids any use of a large page mapping.
2007-03-24 19:53:22 +00:00
Jung-uk Kim
2be4e4713a Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
John Baldwin
d66ff27773 Change the amd64, i386, and ia64 nexus drivers to setup bus space tags and
handles when activating a resource via bus_activate_resource() rather than
doing some of the work in bus_alloc_resource() and some of it in
bus_activate_resource().

One note is that when using isa_alloc_resourcev() on PC-98, drivers now
need to just use bus_release_resource() without explicitly calling
bus_deactivate_resource() first.  nyan@ has already fixed all of the PC-98
drivers.
2007-03-21 15:36:38 +00:00
John Baldwin
b8783b00f8 Add a new apic0 psuedo-device to claim memory resources for the memory
address ranges used by local and I/O APICs in the system.  Some systems
also reserve these ranges as system resources via either PnPBIOS or
ACPI, so this device currently attaches after acpi0 and legacy0 so that
the system resources are given precedence.
2007-03-20 21:53:31 +00:00
John Baldwin
95a07592ee Add a new ram0 pseudo-device that claims memory resouces for physical
addresses corresponding to system RAM.  On amd64 ram0 uses the SMAP
and claims all the type 1 SMAP regions.  On i386 ram0 uses the
dump_avail[] array.  Note that on i386 we have to ignore regions above
4G in PAE kernels since bus resources use longs.
2007-03-20 21:08:39 +00:00
Jung-uk Kim
2498f259d4 - Add macros for newly added CPUID bits in the corresponding header files.
- Use correct capticalization in xTPR as Intel uses in their documents.
- Use proper description instead of vendor code name in comment.
2007-03-20 20:22:45 +00:00
John Baldwin
ce533e82a2 Tweak the probe/attach order of devices on the x86 nexus devices.
Various BIOS-related psuedo-devices are added at an order of 5.  acpi0 is
added at an order of 10, and legacy0 is added at an order of 11.
2007-03-20 20:21:44 +00:00
Sam Leffler
09dce7a13d display two new Intel feature bits
Submitted by:	"Rui Paulo" <rpaulo@gmail.com>
MFC after:	2 weeks
2007-03-19 05:23:42 +00:00
Alan Cox
8cfba7267f Eliminate an unused parameter. 2007-03-17 19:42:06 +00:00
Nate Lawson
9b0df55b61 Create an identity mapping (V=P) super page for the low memory region on
boot.  Then, just switch to the kernel pmap when suspending instead of
allocating/freeing our own mapping every time.  This should solve a panic
of pmap_remove() being called with interrupts disabled.  Thanks to Alan
Cox for developing this patch.

Note: this means that ACPI requires super page (PG_PS) support in the CPU.
This has been present since the Pentium and first documented in the
Pentium Pro.  However, it may need to be revisited later.

Submitted by:	alc
MFC after:	1 month
2007-03-14 22:30:02 +00:00
Jung-uk Kim
ab5916a526 Add another CPUID for AMD CPUs and fix style(9) while I am here. 2007-03-12 20:27:21 +00:00
Alan Cox
c640357f04 Push down the implementation of PCPU_LAZY_INC() into the machine-dependent
header file.  Reimplement PCPU_LAZY_INC() on amd64 and i386 making it
atomic with respect to interrupts.

Reviewed by: bde, jhb
2007-03-11 05:54:29 +00:00
John Baldwin
07bb813626 Defer calling lapic_init() until we've completed the 'MPTable: <...>'
printf.  Otherwise, printfs inside of lapic_init() (such as during a
verbose boot) can uglify the output.
2007-03-09 15:49:57 +00:00
Mohan Srinivasan
f9bb753844 Over NFS, an open() call could result in multiple over-the-wire
GETATTRs being generated - one from lookup()/namei() and the other
from nfs_open() (for cto consistency). This change eliminates the
GETATTR in nfs_open() if an otw GETATTR was done from the namei()
path. Instead of extending the vop interface, we timestamp each attr
load, and use this to detect whether a GETATTR was done from namei()
for this syscall. Introduces a thread-local variable that counts the
syscalls made by the thread and uses <pid, tid, thread syscalls> as
the attrload timestamp. Thanks to jhb@ and peter@ for a discussion on
thread state that could be used as the timestamp with minimal overhead.
2007-03-09 04:02:38 +00:00