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358 commits

Author SHA1 Message Date
Pallipadi, Venkatesh
d96f94c604 ACPI: Enable bit 11 in _PDC to advertise hw coord
Bit 11 in intel PDC definitions is meant for OS capability to handle
hardware coordination of P-states. In Linux we have always supported
hwardware coordination of P-states. Just let the BIOSes know that we
support it, by setting this bit.

Some BIOSes use this bit to choose between hardware or software coordination
and without this change below, BIOSes switch to software coordination, which
is not very optimal in terms of power consumption and extra wakeups from idle.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-07 00:41:14 -05:00
David Brownell
c3407710b7 ACPI: fix ACPI_FADT_S4_RTC_WAKE comment
Make the comment for ACPI_FADT_S4_RTC_WAKE match the ACPI spec;
that bit has nothing to do with status bits.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-16 14:32:17 -05:00
Len Brown
ec9f168fcc Merge branch 'simplify_PRT' into release
Conflicts:
	drivers/acpi/pci_irq.c

Note that this merge disables
e1d3a90846
pci, acpi: reroute PCI interrupt to legacy boot interrupt equivalent

Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-09 03:41:08 -05:00
Len Brown
b2576e1d44 Merge branch 'linus' into release 2009-01-09 03:39:43 -05:00
Len Brown
d0302bc62a Merge branch 'misc' into release
Conflicts:
	include/acpi/acpixf.h

Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-09 03:37:48 -05:00
Len Brown
e2f7a77728 ACPICA: hide private headers
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-09 03:31:01 -05:00
Zhao Yakui
237889bf0a ACPI : Use RSDT instead of XSDT by adding boot option of "acpi=rsdt"
On some boxes there exist both RSDT and XSDT table. But unfortunately
sometimes there exists the following error when XSDT table is used:
   a. 32/64X address mismatch
   b. The 32/64X FACS address mismatch

   In such case the boot option of "acpi=rsdt" is provided so that
RSDT is tried instead of XSDT table when the system can't work well.

http://bugzilla.kernel.org/show_bug.cgi?id=8246

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
cc:Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-09 01:41:58 -05:00
Len Brown
5b929aa1ae ACPICA: delete acdisasm.h
it is referenced only #ifdef ACPI_DISASSEMBLER,
which is never set by the kernel.

Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-08 23:44:17 -05:00
Frederik Schwarzer
0211a9c850 trivial: fix an -> a typos in documentation and comments
It is always "an" if there is a vowel _spoken_ (not written).
So it is:
"an hour" (spoken vowel)
but
"a uniform" (spoken 'j')

Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-01-06 11:28:07 +01:00
Rusty Russell
2fdf66b491 cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
Impact: Reduce memory usage, use new API.

This is part of an effort to reduce structure sizes for machines
configured with large NR_CPUS.  cpumask_t gets replaced by
cpumask_var_t, which is either struct cpumask[1] (small NR_CPUS) or
struct cpumask * (large NR_CPUS).

(Changes to powernow-k* by <travis>.)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 19:15:40 +01:00
robert.moore@intel.com
e8443c358c ACPICA: Update version to 20081204.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:18:26 -05:00
robert.moore@intel.com
4b67a0e467 ACPICA: FADT: set acpi_gbl_use_default_register_widths to TRUE by default
This returns the FADT support to the original behavior, which is
to use default register widths. However, now check each register
definition and report a warning if it differs from the default.
This is a first step to moving away from the default widths,
rather than outright believing the widths in all FADTs for all
machines, considered rather dangerous until more data is obtained.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:17:56 -05:00
Bob Moore
06f5541960 ACPICA: FADT parsing changes and fixes
1) Update the register lengths for the PM1 event blocks. The
length must be divided by two in order to use these to access
the status registers.
2) Add run-time option to use default register lengths to override a
faulty FADT.
3) Add warning message if any of the X64 address structures contain a length
that does not match the legacy length earlier in the FADT.
4) Move all FADT warning messages into the ValidateFadt function.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:17:09 -05:00
Bob Moore
1685bd404d ACPICA: Add ACPI_MUTEX_TYPE configuration option
Used to specify whether the OSL mutex interfaces should be used,
or binary semaphores instead.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:16:39 -05:00
Bob Moore
7488c8d511 ACPICA: Fixes for various ACPI data tables
Eliminate extraneous "zero length subtable" messages.
Fix subtable output for ERST, MCFG, EINJ tables.
Implement all subtables for HEST.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:16:09 -05:00
Bob Moore
50df4d8b0f ACPICA: Restructure includes into public/private
acpi.h now includes only the "public" acpica headers. All other
acpica headers are "private" and should not be included by acpica
users. One new file, accommon.h is used to include the commonly
used private headers for acpica code generation. Future plans
are to move all private headers to a new subdirectory.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:15:40 -05:00
Bob Moore
d3fd902d1e ACPICA: New: acpi_reset interface - write to reset register
Uses the FADT-defined reset register and reset value. Checks the
FADT flags for the reset register supported bit. Supports reset
register in memory or I/O space, but not in PCI config space
since the host has the information to do it.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:14:32 -05:00
Bob Moore
ecfbbc7b46 ACPICA: New: acpi_read and acpi_write public interfaces
Changed the acpi_hw_low_level_read and acpi_hw_low_level_write functions to
the public acpi_read and acpi_write to allow direct access to
ACPI registers.  Removed the "width" parameter since the width
can be obtained from the input GAS structure. Updated the FADT
initialization to setup the GAS structures with the proper
widths. Some widths are still hardcoded because many FADTs have
incorrect register lengths.

Signed-off-by: Bob Moore <robert.moore@intel.com
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:12:56 -05:00
Bob Moore
08ac07b826 ACPICA: New: Public GPE group enable/disable interfaces
Added acpi_disable_all_gpes and acpi_enable_all_runtime_gpes for
public use.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:10:46 -05:00
Bob Moore
e97d6bf1a0 ACPICA: New: acpi_get_gpe_device interface
This function maps an input GPE index to a GPE block device. Also
Added acpi_current_gpe_count to track the current number of GPEs
that are being managed by the ACPICA core (both FADT-based GPEs
and the GPEs contained in GPE block devices.)

Modify drivers/acpi/system.c to use these 2 new interfaces

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:10:24 -05:00
Lin Ming
889c78be9e ACPI: osl.c: replace return_ACPI_STATUS with return
return_ACPI_STATUS is an internal acpica function, replace it with return.
acpi_gbl_permanent_mmap moved from acglobal.h to acpixf.h for external use

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-31 01:02:05 -05:00
Len Brown
087da3b4e2 ACPI: simplify buffer management for acpi_pci_bind() etc.
use ACPI_ALLOCATE_BUFFER to remove the allocations
within acpi_pci_bind(), acpi_pci_unbind() and acpi_pci_bind_root().
While there, delete some unnecessary param inits from those routines.

Delete concept of ACPI_PATHNAME_MAX, since this was the last use.

Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-30 22:52:26 -05:00
Bob Moore
9b02d6e198 ACPICA: Update version to 20081031
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-29 23:09:52 -05:00
Bob Moore
eeb4437e63 ACPICA: Consolidate method arg count validation code
Merge the code that validates control method argument counts into
the predefined validation module. Eliminates possible multiple
warnings for incorrect counts.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-29 22:38:39 -05:00
Bob Moore
a647b5c340 ACPICA: Add Buffer->String conversion for predefined methods
For predefined methods (such as _BIF), add automatic conversion for
objects that are required to be a String, but a Buffer was found
instead. This can happen when reading string battery data from
an operation region, because it used to be difficult to convert
the data from buffer to string from within the ASL. Linux BZ 11822.

http://bugzilla.kernel.org/show_bug.cgi?id=11822

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-29 22:38:38 -05:00
Bob Moore
009c4cbe99 ACPICA: Add global pointer for FACS table to simplify FACS access
Use a global pointer instead of using AcpiGetTableByIndex for
each FACS access. This simplifies the code for the Global Lock
and the Firmware Waking Vector(s).

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-29 22:38:37 -05:00
Bob Moore
fc37445733 ACPICA: Add a mechanism to escape infinite AML While() loops
Add a loop counter to force exit from AML While loops if the
count becomes too large. This can occur in poorly written AML
when the hardware does not respond within a while loop and the
loop does not implement a timeout. The maximum loop count is
configurable. A new exception code is returned when a loop is
broken, AE_AML_INFINITE_LOOP.  Bob Moore, Alexey Starikovskiy.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-29 22:38:36 -05:00
Bob Moore
d85988fa02 ACPICA: Update FACS waking vector interfaces
Split AcpiSetFirmwareWakingVector into two: one for the 32-bit
vector, another for the 64-bit vector. This is required because the
host OS must setup the wake much differently for each vector (real
vs. protected mode, etc.) and the interface should not be deciding
which vector to use.  Also eliminate the GetFirmwareWakingVector
interface, as it served no purpose (only the firmware reads the
vector, OS only writes the vector.)  ACPICA BZ 731.

http://www.acpica.org/bugzilla/show_bug.cgi?id=731

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-29 22:38:36 -05:00
Bob Moore
6de4048a41 ACPICA: Fix several warnings under gcc 4 compiler
New compiler is pickier than older versions.
Joerg Sonnenberger. From ACPICA BZ 732.

http://www.acpica.org/bugzilla/show_bug.cgi?id=732

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-29 22:38:36 -05:00
Wu Fengguang
abe1dfab60 ACPI: don't cond_resched() when irqs_disabled()
The ACPI interpreter usually runs with irqs enabled.
However, during suspend/resume it runs with
irqs disabled to evaluate _GTS/_BFS, as well as
by irqrouter_resume() which evaluates _CRS, _PRS, _SRS.

http://bugzilla.kernel.org/show_bug.cgi?id=12252

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-19 04:38:33 -05:00
Bjorn Helgaas
e76f427611 ACPI: fix 2.6.28 acpi.debug_level regression
acpi_early_init() was changed to over-write the cmdline param,
making it really inconvenient to set debug flags at boot-time.

Also,
This sets the default level to "info", which is what all the ACPI
drivers use.  So to enable messages from drivers, you only have to
supply the "layer" (a.k.a. "component").  For non-"info" ACPI core
and ACPI interpreter messages, you have to supply both level and
layer masks, as before.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-19 04:38:32 -05:00
Lin Ming
e899b6485c ACPICA: disable _BIF warning
A generic work-around from ACPICA is in the queue,
but since Linux has a work-around in its battery
driver, we can disable this warning now.

Allow _BIF method to return an Package with Buffer elements

http://bugzilla.kernel.org/show_bug.cgi?id=11822

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-27 02:17:30 -05:00
Bob Moore
95a28ed086 ACPICA: Allow _WAK method to return an Integer
This can happen if the _WAK method returns nothing (as per ACPI
1.0) but does return an integer if the implicit return mechanism
is enabled.  This is the only method that has this problem,
since it is also defined to return a package of two integers
(ACPI 1.0b+). In all other cases, if a method returns an object
when one was not expected, no warning is issued.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-27 01:55:13 -05:00
Len Brown
d1876ba4de Merge branch 'ec' into release 2008-11-11 21:17:26 -05:00
Len Brown
547f784747 Merge branch 'processor-256' into release 2008-11-11 21:17:03 -05:00
Len Brown
f398778aa3 Merge branch 'video' into release
Conflicts:
	Documentation/kernel-parameters.txt

Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-11 21:15:50 -05:00
Len Brown
3e0fe36483 Merge branch 'misc' into release 2008-11-11 21:14:11 -05:00
Alexey Starikovskiy
0b7084ac67 ACPICA: Use spinlock for acpi_{en|dis}able_gpe
Disabling gpe might interfere with gpe detection/handling,
thus producing "interrupt not handled" errors.
Ironically, disabling of GPE from interrupt context is already
under spinlock, so only userspace needs to start using it.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-11 18:35:42 -05:00
Thomas Renninger
22c13f9d81 ACPI: video: Ignore devices that aren't present in hardware
This is a reimplemention of commit
0119509c4f
from Matthew Garrett <mjg59@srcf.ucam.org>

This patch got removed because of a regression: ThinkPads with a
Intel graphics card and an Integrated Graphics Device BIOS implementation
stopped working.
In fact, they only worked because the ACPI device of the discrete, the
wrong one, got used (via int10). So ACPI functions were poking on the wrong
hardware used which is a sever bug.
The next patch provides support for above ThinkPads to be able to
switch brightness via the legacy thinkpad_acpi driver and automatically
detect when to use it.

Original commit message from Matthew Garrett:
    Vendors often ship machines with a choice of integrated or discrete
    graphics, and use the same DSDT for both. As a result, the ACPI video
    module will locate devices that may not exist on this specific platform.
    Attempt to determine whether the device exists or not, and abort the
    device creation if it doesn't.

http://bugzilla.kernel.org/show_bug.cgi?id=9614

Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-07 23:49:23 -05:00
Bjorn Helgaas
bdd7279919 ACPI: add driver component definitions to sysfs debug_layers
/sys/module/acpi/parameters/debug_layers used to contain only the
debug layers defined by the ACPI CA.  This patch adds the additional
layer definitions for ACPI drivers.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-07 21:45:04 -05:00
Bjorn Helgaas
44342f9e8d ACPI: fix conflicting component definitions
Some of the component definitions that were previous scattered around
the drivers conflict with each other.  That doesn't hurt anything
except that setting one bit in the debug_layer mask would turn on
debugging in two different modules.  This patch fixes the conflicts.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-07 21:44:49 -05:00
Bjorn Helgaas
89595b8f28 ACPI: consolidate ACPI_*_COMPONENT definitions in acpi_drivers.h
Move all the component definitions for drivers to a single shared place,
include/acpi/acpi_drivers.h.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-07 21:44:37 -05:00
Myron Stowe
ad93a765c1 ACPI: Disambiguate processor declaration type
Declaring processors in ACPI namespace can be done using either a
"Processor" definition or a "Device" definition (see section 8.4 -
Declaring Processors; "Advanced Configuration and Power Interface
Specification", Revision 3.0b).  Currently the two processor
declaration types are conflated.

This patch disambiguates the processor declaration's definition type
enabling subsequent code to behave uniquely based explicitly on the
declaration's type.

Signed-off-by: Myron Stowe <myron.stowe@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-06 20:11:15 -05:00
Bjorn Helgaas
8950d89aca ACPI: remove CONFIG_ACPI_EC
Remove CONFIG_ACPI_EC.  It was always set the same as CONFIG_ACPI,
and it had no menu label, so there was no way to set it to anything
other than "y".

Per section 6.5.4 of the ACPI 3.0b specification,

    OSPM must make Embedded Controller operation regions, accessed
    via the Embedded Controllers described in ECDT, available before
    executing any control method.

The ECDT table is optional, but if it is present, the above text
means that the EC it describes is a required part of the ACPI
subsystem, so CONFIG_ACPI_EC=n wouldn't make sense.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-06 15:52:28 -05:00
Bjorn Helgaas
fefe5ab3d6 ACPI: remove CONFIG_ACPI_POWER
Remove CONFIG_ACPI_POWER.  It was always set the same as CONFIG_ACPI,
and it had no menu label, so there was no way to set it to anything
other than "y".

The interfaces under CONFIG_ACPI_POWER (acpi_device_sleep_wake(),
acpi_power_transition(), etc) are called unconditionally from the
ACPI core, so we already depend on it always being present.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-06 15:42:38 -05:00
Zhang Rui
ed206fac87 ACPI: bugfix reporting of event handler status
Introduce a new flag showing whether the event has an event handler/method.

For all the GPEs and Fixed Events,
 1. ACPI_EVENT_FLAG_HANDLE is cleared, it's an "invalid" ACPI event.
 2. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_DISABLE are set,
    it's "disabled".
 3. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_ENABLE are set,
    it's "enabled".
 4. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_WAKE_ENABLE are set,
    it's "wake_enabled".

Among other things, this prevents incorrect reporting of ACPI events
as being "invalid" when it's really just (temporarily) "disabled".

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-28 01:53:19 -04:00
Len Brown
057316cc6a Merge branch 'linus' into test
Conflicts:
	MAINTAINERS
	arch/x86/kernel/acpi/boot.c
	arch/x86/kernel/acpi/sleep.c
	drivers/acpi/Kconfig
	drivers/pnp/Makefile
	drivers/pnp/quirks.c

Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-23 00:11:07 -04:00
Len Brown
7674416db4 Merge branch 'ull' into test
Conflicts:
	drivers/acpi/bay.c
	drivers/acpi/dock.c
	drivers/ata/libata-acpi.c

Signed-off-by: Len Brown <len.brown@intel.com>
2008-10-22 23:33:29 -04:00
Len Brown
5f50ef453d Merge branch 'misc' into test 2008-10-22 23:28:38 -04:00
Len Brown
0fbb3726f2 Merge branch 'ec' into test 2008-10-22 23:27:59 -04:00