Commit Graph

10324 Commits

Author SHA1 Message Date
Yoshihiro Takahashi
24072ca35b - Move timerreg.h to <arch>/include and split i8253 specific defines into
i8253reg.h, and add some defines to control a speaker.
- Move PPI related defines from i386/isa/spkr.c into ppireg.h and use them.
- Move IO_{PPI,TIMER} defines into ppireg.h and timerreg.h respectively.
- Use isa/isareg.h rather than <arch>/isa/isa.h.

Tested on: i386, pc98
2005-05-14 09:10:02 +00:00
Jacques Vidrine
032e56ae9b Default hyperthreading on in -CURRENT. No seatbelts in CURRENT (^_^)
Requested by:	peter, jhb
2005-05-13 00:57:04 +00:00
Jacques Vidrine
f6108b6158 Add a knob for disabling/enabling HTT, "machdep.hyperthreading_allowed".
Default off due to information disclosure on multi-user systems.

Submitted by:	cperciva
Reviewed by:	jhb
2005-05-13 00:10:56 +00:00
Yoshihiro Takahashi
164e09ddb4 - Move the NPX_DEBUG option to options.{i386,pc98} and use opt_npx.h.
- Move npx related defines to {i386,pc98}/include/npx.h to remove #include
  {isa,cbus}.h.
2005-05-12 12:47:41 +00:00
Yoshihiro Takahashi
257d63789e - Move lptreg.h into pc98/cbus and rename to olptreg.h.
- Remove ifdef pc98.
2005-05-10 12:30:30 +00:00
Yoshihiro Takahashi
d1725ef7ff Change a directory layout for pc98.
- Move MD files into <arch>/<arch>.
  - Move bus dependent files into <arch>/<bus>.
Rename some files to more suitable names.

Repo-copied by:	peter
Discussed with:	imp
2005-05-10 12:02:18 +00:00
Yoshihiro Takahashi
b416ebde05 Move if_wl_i82586.h into sys/dev/wl. 2005-05-09 04:47:58 +00:00
Colin Percival
9b2dc15ca0 Correctly validate inputs to the i386_get_ldt syscall.
Security: FreeBSD-SA-05:07.ldt
2005-05-06 02:40:18 +00:00
Peter Wemm
27d89f4a00 Move the pcb variable initialization earlier. This is cosmetic here, but
in as-yet uncommitted code for 32 bit binary compatability on 64 bit
kernels, some of the 32 bit registers come from the pcb.  Moving the
initialization here means fill_regs32() etc are laid out the same.
2005-05-05 18:26:45 +00:00
Joseph Koshy
c5153e190b Add convenience APIs pmc_width() and pmc_capabilities() to -lpmc.
Have pmcstat(8) and pmccontrol(8) use these APIs.

Return PMC class-related constants (PMC widths and capabilities)
with the OP GETCPUINFO call leaving OP PMCINFO to return only the
dynamic information associated with a PMC (i.e., whether enabled,
owner pid, reload count etc.).

Allow pmc_read() (i.e., OPS PMCRW) on active self-attached PMCs to
get upto-date values from hardware since we can guarantee that the
hardware is running the correct PMC at the time of the call.

Bug fixes:
 - (x86 class processors) Fix a bug that prevented an RDPMC
   instruction from being recognized as permitted till after the
   attached process had context switched out and back in again after
   a pmc_start() call.

   Tighten the rules for using RDPMC class instructions: a GETMSR
   OP is now allowed only after an OP ATTACH has been done by the
   PMC's owner to itself.  OP GETMSR is not allowed for PMCs that
   track descendants, for PMCs attached to processes other than
   their owner processes.

 - (P4/HTT processors only) Fix a bug that caused the MI and MD
   layers to get out of sync.  Add a new MD operation 'get_config()'
   as part of this fix.

 - Allow multiple system-mode PMCs at the same row-index but on
   different CPUs to be allocated.

 - Reject allocation of an administratively disabled PMC.

Misc. code cleanups and refactoring.  Improve a few comments.
2005-05-01 14:11:49 +00:00
Doug White
fdc9713bf7 Implement an alternate method to stop CPUs when entering DDB. Normally we use
a regular IPI vector, but this vector is blocked when interrupts are disabled.
With "options KDB_STOP_NMI" and debug.kdb.stop_cpus_with_nmi set, KDB will
send an NMI to each CPU instead. The code also has a context-stuffing
feature which helps ddb extract the state of processes running on the
stopped CPUs.

KDB_STOP_NMI is only useful with SMP and complains if SMP is not defined.
This feature only applies to i386 and amd64 at the moment, but could be
used on other architectures with the appropriate MD bits.

Submitted by:	ups
2005-04-30 20:01:00 +00:00
David E. O'Brien
97c1144eb2 Enable dc(4) and rl(4) in the PAE kernel.
Both have been busdma'ed for use and tested in the Sparc64 kenrel.
2005-04-29 18:12:22 +00:00
Scott Long
a8e6f0b6fa For whatever reason, we don't allow USB on PAE. Since it's a dependency
for EHCI, exclude that driver also.
2005-04-29 02:59:19 +00:00
Joseph Koshy
6b8c8cd85f Return the correct register number in the 'get_msr()' MD function.
Only allow a process to use the x86 RDPMC instruction if it has
allocated and attached a PMC to itself.

Inform the MD layer of the "pseudo context switch out" that needs
to be done when the last thread of a process is exiting.
2005-04-28 08:13:19 +00:00
Jeff Roberson
7625cbf3cc - Pass the ISOPEN flag to namei so filesystems will know we're about to
open them or otherwise access the data.
2005-04-27 09:05:19 +00:00
Nate Lawson
d83c213c4f Remove obsolete option.
MFC after:	1 day
2005-04-25 06:24:19 +00:00
David Xu
21fc316430 Change cpu_set_kse_upcall to more generic style, so we can reuse it
in other codes. Add cpu_set_user_tls, use it to tweak user register
and setup user TLS. I ever wanted to merge it into cpu_set_kse_upcall,
but since cpu_set_kse_upcall is also used by M:N threads which may
not need this feature, so I wrote a separated cpu_set_user_tls.
2005-04-23 02:32:32 +00:00
Ian Dowse
b8619d3608 Pick up the selectors to use for various kernel segments from assym.s
instead of assuming fixed offsets within the GDT. The hard-coded
values here have been incorrect since Peter's GDT rearranging around
10 days ago, causing ACPI resume problems.

Reviewed by:	peter
2005-04-22 09:53:04 +00:00
Alan Cox
c0862430d5 Eliminate an unpredictable branch from bcmp().
Reviewed by: bde
2005-04-21 23:07:20 +00:00
Marcel Moolenaar
d47cce3ec8 Revert previous commit: The hwpmc(4) driver compiles on all platforms. 2005-04-20 22:19:51 +00:00
Paul Saab
8cb038b4b2 Don't enter the debugger if KDB_UNATTENDED is set or if
debug.debugger_on_panic=0.

MFC after:	2 weeks
2005-04-20 20:52:46 +00:00
Marcel Moolenaar
76b6d954f0 o Reverse the inclusion chain from MD->MI to MI->MD by removing the
inclusion of <sys/pmc.h> and depending on being included from
   that header file.
o  Include any MD specific header files that otherwise need to be
   included from MI files.

Ok'd: jkoshy@
2005-04-20 20:22:33 +00:00
Warner Losh
f13ea502b5 Move this to the specific architectures that are supported. #ifdef foo
in sys/pmc.h precludes it from working on !i386, !amd64.  When that changes,
it can be moved back into conf/NOTES.
2005-04-19 22:16:46 +00:00
Nate Lawson
f8420b5828 Add a driver for SMI-based SpeedStep. The hardware supports two frequency
settings and is an older version of the same design used for ICH SpeedStep.
It is only known to be available on PIIX4 chipsets.

Many thanks to Bruno Ducrot for writing the driver and Jon Noack for
testing.

Submitted by:	Bruno Ducrot
2005-04-19 16:38:24 +00:00
David Xu
9a045ca17f Further narrow down critical region of FSBASE code. 2005-04-19 13:52:27 +00:00
David Xu
4b1fa23954 Use critical section functions rather than scheduler lock to protect
critical region.
2005-04-19 13:15:52 +00:00
Joseph Koshy
ebccf1e3a6 Bring a working snapshot of hwpmc(4), its associated libraries, userland utilities
and documentation into -CURRENT.

Bump FreeBSD_version.

Reviewed by:	alc, jhb (kernel changes)
2005-04-19 04:01:25 +00:00
Warner Losh
06db52b609 Break out the definition of bus_space_{tag,handle}_t and a few other types
into _bus.h to help with name space polution from including all of bus.h.
In a few days, I'll commit changes to the MI code to take advantage of thse
sepration (after I've made sure that these changes don't break anything in
the main tree, I've tested in my trees, but you never know...).

Suggested by: bde (in 2002 or 2003 I think)
Reviewed in principle by: jhb
2005-04-18 21:45:34 +00:00
Eric Anholt
b8aa843c63 Update to DRM CVS as of 2005-04-12, bringing many changes:
- Split core DRM routines back into their own module, rather than using the
  nasty templated system like before.
- Development-class R300 support in radeon driver (requires userland pieces, of
  course).
- Mach64 driver (haven't tested in a while -- my mach64s no longer fit in the
  testbox).  Covers Rage Pros, Rage Mobility P/M, Rage XL, and some others.
- i915 driver files, which just need to get drm_drv.c fixed to allow attachment
  to the drmsub device.  Covers i830 through i915 integrated graphics.
- savage driver files, which should require minimal changes to work.  Covers the
  Savage3D, Savage IX/MX, Savage 4, ProSavage.
- Support for color and texture tiling and HyperZ features of Radeon.

Thanks to:	scottl (much p4 handholding)
		Jung-uk Kim (helpful prodding)
PR:		[1] kern/76879, [2] kern/72548
Submitted by:	[1] Alex, lesha at intercaf dot ru
		[2] Shaun Jurrens, shaun at shamz dot net
2005-04-16 03:44:47 +00:00
John Baldwin
133539f2aa Really remove the last vestiges of mixed mode from all but amd64. 2005-04-15 06:56:52 +00:00
John Baldwin
f12be15787 Oops, remove last mention of mixed mode.
Prodded by:	marks
2005-04-15 06:13:31 +00:00
John Baldwin
84c7fde72e Trust the settings programmed by the BIOS over what the $PIR says.
Specifically, if the BIOS has programmed an IRQ for a device that doesn't
match the list of valid IRQs for the link, use it anyway as some BIOSes
don't correctly list the valid IRQs in the $PIR.  Also, allow the user
to specify an IRQ that $PIR claims is invalid as an override, but emit a
warning in that case.
2005-04-14 18:25:09 +00:00
John Baldwin
2326e092a7 Remove support for mixed mode altogether now that we no longer use IRQ 0
when using an APIC.  This simplifies the APIC code somewhat and also allows
us to be pedantically more compliant with ACPI which mandates no use of
mixed mode.
2005-04-14 17:59:58 +00:00
John Baldwin
f781b7b493 Bah, add a missing cast. 2005-04-14 06:33:23 +00:00
John Baldwin
33b5f5b7e0 Always use the local APIC timer, even on UP machines. 2005-04-14 05:56:17 +00:00
John Baldwin
c9ed75c153 If an I/O APIC returns 0xffffffff for its version register after we map it,
assume it is bogus and return NULL instead of trying to parse it as an
APIC.

Inspired by:	linux bug reports via njl
2005-04-14 05:55:34 +00:00
Peter Wemm
d1734bad0a It seems I introduced a new prerequisite for <machine/pcb.h> on i386,
which is included from <sys/user.h>.  Add a bandaid for userland.
2005-04-14 04:13:27 +00:00
Peter Wemm
4740f5439a Allow user processes to completely empty out their LDT, now that user
processes run from segment selectors that live in the GDT.  Doing this
used to be equivalent to committing suicide, but now this is a NOP.
2005-04-14 03:16:58 +00:00
Peter Wemm
e0ab2c6d10 Change the segment limits to 4GB, we set the user accessible bit on all
of the kernel address space already.  Intel recommend this anyway, because
using a non-4GB limit adds an additional clock cycle to address generation.
We were able to install 4GB segments into the LDT, so any limits we imposed
on %cs and %ds were academic anyway.  More importantly, this allows us to
make a page in the kernel readable to user applications, for holding things
like the signal trampoline and other fun things.

Move the user %cs/%ds segments from the LDT to the GDT.  There was no good
reason for them to be there anyway.  The old LDT entries are still there
but we can now relax the restriction that prevented users from emptying
the default LDT entries.

Putting user and kernel %cs and %ds together allows us to access the fast
sysenter/sysexit/syscall/sysret instructions.  syscall/sysret in particular
require that the user/kernel segments be laid out this way.  Reserve a slot
specifically for NDIS while here.

Create two user controllable slots in the GDT that are context switched
with the (kernel) thread.  This allows user applications to set two
user privilige selectors to arbitary values.  Create
i386_set_fsbase(void *base) and friends. (get/set, fs/gs).  For i386,
%gs is used by tls and the thread libraries and this means that user
processes no longer have to have the cost of having a custom LDT, and
we will no longer to do a ldt switch when activating a kthread/ithread in
the usual case any more.

In other words, we can now set the base address for %fs and %gs to arbitary
addresses without the pain of messing with ldt segments.
2005-04-13 22:57:17 +00:00
Peter Wemm
85b23d1138 Fix an evil bug that appeared in September 2003. VM86 bios calls use two
of the __pcb_spare longs.  Except that fields were changed and one of the
spare values was used and the __pcb_spare field was reduced from two to one
long.  Now VM86 bios calls can trash the first 4 bytes of the next page
following the kernel stack/pcb.  This Is Bad(TM).  This bug has been
present in 5.2-release and onwards, and is still in RELENG_5.

Instead of tempting fate and trying to use "spare" fields, explicitly
reserve them.
2005-04-13 18:13:40 +00:00
Yoshihiro Takahashi
91649ac9bd Move pc98 specific parts to the pc98 specific file. 2005-04-13 13:12:12 +00:00
Matthew N. Dodd
73c730a694 Add support for O_NOFOLLOW and O_DIRECT to Linux fcntl() F_GETFL/F_SETFL. 2005-04-13 04:31:43 +00:00
John Baldwin
aa9aa68d2f Use PCPU_LAZY_INC() for cnt.v_{intr,trap,syscalls} rather than atomic
operations in some places and simple non-per CPU math in others.
2005-04-12 23:18:54 +00:00
John Baldwin
ae3676c4e2 Use NULL rather than 0 in a couple of places. 2005-04-12 23:12:46 +00:00
Matthew N. Dodd
93fa9a8d72 Replace spl protection in rtcin() and writertc() with spinlocks
using the existing clock_lock mutex.
2005-04-12 20:49:31 +00:00
Matthew N. Dodd
55ec9ed408 - Consistently protect against NULL dereference.
- Simplify conditional logic to make code easier to read.
2005-04-12 20:14:56 +00:00
Nate Lawson
273efb3d32 Properly terminate the table generated from ACPI info. The cpufreq
settings are length-counted while the EST table is null-terminated.
This fixes extra garbage states being reported with ACPI probing.
2005-04-10 19:57:47 +00:00
Nate Lawson
25554b1f2b Advertise p4tcc via acpi_get_features() _PDC support. 2005-04-10 19:16:27 +00:00
John Baldwin
c6a37e8413 Divorce critical sections from spinlocks. Critical sections as denoted by
critical_enter() and critical_exit() are now solely a mechanism for
deferring kernel preemptions.  They no longer have any affect on
interrupts.  This means that standalone critical sections are now very
cheap as they are simply unlocked integer increments and decrements for the
common case.

Spin mutexes now use a separate KPI implemented in MD code: spinlock_enter()
and spinlock_exit().  This KPI is responsible for providing whatever MD
guarantees are needed to ensure that a thread holding a spin lock won't
be preempted by any other code that will try to lock the same lock.  For
now all archs continue to block interrupts in a "spinlock section" as they
did formerly in all critical sections.  Note that I've also taken this
opportunity to push a few things into MD code rather than MI.  For example,
critical_fork_exit() no longer exists.  Instead, MD code ensures that new
threads have the correct state when they are created.  Also, we no longer
try to fixup the idlethreads for APs in MI code.  Instead, each arch sets
the initial curthread and adjusts the state of the idle thread it borrows
in order to perform the initial context switch.

This change is largely a big NOP, but the cleaner separation it provides
will allow for more efficient alternative locking schemes in other parts
of the kernel (bare critical sections rather than per-CPU spin mutexes
for per-CPU data for example).

Reviewed by:	grehan, cognet, arch@, others
Tested on:	i386, alpha, sparc64, powerpc, arm, possibly more
2005-04-04 21:53:56 +00:00
Nate Lawson
15785fbe81 Add support for _PDC/_OSC by advertising that we support direct access to
the PERF_CTL/STS MSRs via the new acpi_get_features() method.  This should
allow newer systems to use SpeedStep.
2005-04-04 15:51:13 +00:00