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path: root/drivers/acpi/acpica
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2009-11-24ACPICA: Silence the warning about _BIF returning the bufferAlexey Starikovskiy
_BIF was returning buffer instead of a string since day 1 of ACPI. Adding a warning for that is noble, but people don't like when someone cries wolf in a production system. Reference: http://bugzilla.kernel.org/show_bug.cgi?id=14379 Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."Bob Moore
Ensure that memory mappings created for operation regions do not cross page boundaries. Crossing a page boundary while mapping regions can cause warnings if the pages have different attributes. Such regions are probably BIOS bugs, and this is the workaround. http://bugzilla.kernel.org/show_bug.cgi?id=14445 [Kernel summit hacking hour] Signed-off-by: Bob Moore <robert.moore@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-23Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (119 commits) ACPI: don't pass handle for fixed hardware notifications ACPI: remove null pointer checks in deferred execution path ACPI: simplify deferred execution path acerhdf: additional BIOS versions acerhdf: convert to dev_pm_ops acerhdf: fix fan control for AOA150 model thermal: add missing Kconfig dependency acpi: switch /proc/acpi/{debug_layer,debug_level} to seq_file hp-wmi: fix rfkill memory leak on unload ACPI: remove unnecessary #ifdef CONFIG_DMI ACPI: linux/acpi.h should not include linux/dmi.h hwmon driver for ACPI 4.0 power meters topstar-laptop: add new driver for hotkeys support on Topstar N01 thinkpad_acpi: fix rfkill memory leak on unload thinkpad-acpi: report brightness events when required thinkpad-acpi: don't poll by default any of the reserved hotkeys thinkpad-acpi: Fix procfs hotkey reset command thinkpad-acpi: deprecate hotkey_bios_mask thinkpad-acpi: hotkey poll fixes thinkpad-acpi: be more strict when detecting a ThinkPad ...
2009-09-20x86: Trivial whitespace cleanupsFelipe Contreras
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Cc: Vegard Nossum <vegardno@ifi.uio.no> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alok N Kataria <akataria@vmware.com> Cc: "Tan Wei Chong" <wei.chong.tan@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Bob Moore <robert.moore@intel.com> LKML-Reference: <1253137123-18047-2-git-send-email-felipe.contreras@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19Merge branch 'bugzilla-13620' into releaseLen Brown
2009-09-19Merge branch 'acpica' into releaseLen Brown
2009-09-15Merge branch 'x86-txt-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-txt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, intel_txt: clean up the impact on generic code, unbreak non-x86 x86, intel_txt: Handle ACPI_SLEEP without X86_TRAMPOLINE x86, intel_txt: Fix typos in Kconfig help x86, intel_txt: Factor out the code for S3 setup x86, intel_txt: tboot.c needs <asm/fixmap.h> intel_txt: Force IOMMU on for Intel TXT launch x86, intel_txt: Intel TXT Sx shutdown support x86, intel_txt: Intel TXT reboot/halt shutdown support x86, intel_txt: Intel TXT boot support
2009-09-08ACPICA: Windows compatibility: autoexecute root _INI methodBob Moore
Add support for execution of an _INI method at the namespace root. Although not defined in the ACPI specification, this support was added to Windows around the Vista timeframe. It is added here for Windows compatibility. 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>
2009-09-08ACPICA: Update _OSI with new Windows OS stringsBob Moore
Added strings for Windows server 2008, Windows Vista SP1, Windows 7, and Windows server 2008 R2. 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>
2009-09-08ACPICA: Fix memory leak for ill-formed Package objectsBob Moore
Fixes a possible memory leak in the interpreter for package objects if the package initializer list is longer than the defined size of the package. This apparently can only happen if the BIOS changes the package size on the fly (seen in a _PSS object), as both iASL and the other compiler do not allow this. The interpreter will truncate the package to the defined size (and issue an error message), but can leave the extra objects undeleted if they have been pre-created during the argument processing (such is the case if the package consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. http://www.acpica.org/bugzilla/show_bug.cgi?id=805 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>
2009-09-08ACPICA: Remove error message for Store(Localx,Localx)Bob Moore
We silently ignore this construct for Windows compatibility ACPICA BZ 785. http://www.acpica.org/bugzilla/show_bug.cgi?id=785 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>
2009-09-08ACPICA: Fix extraneous warning if _DSM returns a packageBob Moore
_DSM can return any type of object, so validation on the return type cannot be performed. ACPICA BZ 802. http://www.acpica.org/bugzilla/show_bug.cgi?id=802 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>
2009-09-02Merge commit 'v2.6.31-rc8' into x86/txtIngo Molnar
Conflicts: arch/x86/kernel/reboot.c security/Kconfig Merge reason: resolve the conflicts, bump up from rc3 to rc8. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-01x86, intel_txt: clean up the impact on generic code, unbreak non-x86Shane Wang
Move tboot.h from asm to linux to fix the build errors of intel_txt patch on non-X86 platforms. Remove the tboot code from generic code init/main.c and kernel/cpu.c. Signed-off-by: Shane Wang <shane.wang@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-08-28ACPICA: acpi_reset: Bypass port validation mechanismBob Moore
Allow writes to reserved ports. This change may eventually be driven down in to acpi_write and acpi_read. 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>
2009-08-28ACPICA: Add support for module-level executable AML codeLin Ming
Add limited support for executable AML code that exists outside of any control method. This type of code has been illegal since ACPI 2.0. The code must exist in an If/Else/While block. All AML tables are supported, including tables that are dynamically loaded. ACPICA BZ 762. http://acpica.org/bugzilla/show_bug.cgi?id=762 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: ACPI 4: Add validation for new predefined names.Bob Moore
Added 31 new names for ACPI 4.0. 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>
2009-08-28ACPICA: reformat predefined method table, no functional changeLin Ming
Reformatted the methods that return package objects. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-28ACPICA: Fix fault if acpi_terminate is called twiceBob Moore
Fixes a problem with the mechanism that prevents problems if the acpi_terminate interface is inadvertently called more than once before the ACPICA code is re-initialized. ACPICA BZ 795. http://acpica.org/bugzilla/show_bug.cgi?id=795 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>
2009-08-28ACPICA: ACPI 4.0 : Add new return package type, restructure module.Bob Moore
Added one new package type, a package that contains a revision number and a variable number of sub-packages. Restructured the module to put the sub-package list traversal in a separate 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>
2009-08-28ACPICA: Add repair for predefined methods that return nested packagesBob Moore
Fixes a problem where a predefined method is defined to return a variable-length Package of sub-packages. If the length is one, the BIOS code occasionally creates a simple single package with no sub-packages. This code attempts to fix the problem by wrapping a new package object around the existing package. ACPICA BZ 790. http://acpica.org/bugzilla/show_bug.cgi?id=790 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>
2009-08-28ACPICA: Move predefined repair code to new file, no functional changeBob Moore
New file is nsrepair.c. This is in preparation for additional errror correcting code. 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>
2009-08-28ACPICA: Windows compatibility fix: same buffer/string storeLin Ming
Fix a compatibility issue when the same buffer or string is stored to itself. This has been seen in the field. Previously, ACPICA would zero out the buffer/string. Now, the operation is treated as a NOP. http://bugzilla.acpica.org/show_bug.cgi?id=803 Reported-by: Rezwanul Kabir <Rezwanul_Kabir@Dell.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: fix leak of acpi_os_validate_addressLin Ming
http://bugzilla.kernel.org/show_bug.cgi?id=13620 If the dynamic region is created and added to resource list over and over again, it has the potential to be a memory leak by growing the list every time. This patch fixes the memory leak, as below 1) add a new field "count" to struct acpi_res_list. When inserting, if the region(addr, len) is already in the resource list, we just increase "count", otherwise, the region is inserted with count=1. When deleting, the "count" is decreased, if it's decreased to 0, the region is deleted from the resource list. With "count", the region with same address and length can only be inserted to the resource list once, so prevent potential memory leak. 2) add a new function acpi_os_invalidate_address, which is called when region is deleted. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: Clarify common suffix for error/warning messagesBob Moore
Added parens around the acpica version/modulename/linenumber to clearly differentiate this group from the rest of the message. 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>
2009-08-27ACPICA: Fix: Predefined object repair executed only onceBob Moore
This fixes a problem where the code that attempts to repair/convert an object of incorrect type is only executed on the first time the predefined method is called. The mechanism that disables warnings on subsequent calls was interfering with the repair mechanism. ACPICA BZ 781. http://acpica.org/bugzilla/show_bug.cgi?id=781 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>
2009-08-27ACPICA: Dump table header - suppress output of non-printable charactersBob Moore
Function acpi_tb_print_table_header. Some ACPI tables contain non-printable characters in one of the string fields of the the header - Signature, OemId, OemTableId, or CompilerId. Invalid characters are replaced by '?'. ACPICA BZ 788. http://acpica.org/bugzilla/show_bug.cgi?id=788 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>
2009-08-27ACPICA: Fix several acpi_attach_data problemsBob Moore
Handler was never invoked. Now invoked if/when host node is deleted. Data object was not automatically deleted when host node was deleted. Interface to handler had an unused parameter, removed it. ACPICA BZ 778. http://acpica.org/bugzilla/show_bug.cgi?id=778 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>
2009-08-27ACPICA: ACPI 4.0: Interpreter support for IPMI.Lin Ming
Adds support for IPMI which is similar to SMBus and uses a bi-directional data buffer. ACPICA BZ 773. http://acpica.org/bugzilla/show_bug.cgi?id=773 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: ACPI 4.0: iASL/Disassembler - IPMI keyword support.Lin Ming
Adds support for the new IPMI operation region keyword. ACPICA BZ 771, 772. http://acpica.org/bugzilla/show_bug.cgi?id=771 http://acpica.org/bugzilla/show_bug.cgi?id=772 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-08-27ACPICA: Fix possible memory leak in nspredefBob Moore
Fixed a possible leak when an attempt is made to repair a return object. The only current repair is an automatic buffer to string conversion. 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>
2009-08-27ACPICA: Major update for acpi_get_object_info external interfaceBob Moore
Completed a major update for the acpi_get_object_info external interface. Changes include: - Support for variable, unlimited length HID, UID, and CID strings - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) - Call the _SxW power methods on behalf of a device object - Determine if a device is a PCI root bridge - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. These changes will require an update to all callers of this interface. See the ACPICA Programmer Reference for details. Also, update all invocations of acpi_get_object_info interface 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>
2009-08-27ACPICA: Remove duplicate prototypes from headerBob Moore
Two duplicates in acdebug.h. 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>
2009-08-27ACPICA: Add 64-bit support to acpi_read and acpi_writeBob Moore
Needed by drivers for new ACPi tables. Internal versions of these functions still use 32-bit max transfers, in order to minimize disruption and stack use for the standard ACPI registers (FADT-based). 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>
2009-08-27ACPICA: Remove duplicate extern declarations for public globalsBob Moore
Some were defined twice, causes a warning with gcc -Wredundant-decls. 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>
2009-08-27ACPICA: Fix several pointer casts to avoid possible compile warningsBob Moore
Fixes warnings with gcc -Wcast-qual flag. 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>
2009-07-27Revert "ACPICA: Remove obsolete acpi_os_validate_address interface"Len Brown
This reverts commit f9ca058430333c9a24c5ca926aa445125f88df18. which caused a regression: http://bugzilla.kernel.org/show_bug.cgi?id=13620 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-07-21x86, intel_txt: Intel TXT Sx shutdown supportJoseph Cihula
Support for graceful handling of sleep states (S3/S4/S5) after an Intel(R) TXT launch. Without this patch, attempting to place the system in one of the ACPI sleep states (S3/S4/S5) will cause the TXT hardware to treat this as an attack and will cause a system reset, with memory locked. Not only may the subsequent memory scrub take some time, but the platform will be unable to enter the requested power state. This patch calls back into the tboot so that it may properly and securely clean up system state and clear the secrets-in-memory flag, after which it will place the system into the requested sleep state using ACPI information passed by the kernel. arch/x86/kernel/smpboot.c | 2 ++ drivers/acpi/acpica/hwsleep.c | 3 +++ kernel/cpu.c | 7 ++++++- 3 files changed, 11 insertions(+), 1 deletion(-) Signed-off-by: Joseph Cihula <joseph.cihula@intel.com> Signed-off-by: Shane Wang <shane.wang@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-05-27ACPICA: Disable preservation of SCI enable bit (SCI_EN)Bob Moore
Preserving this bit breaks some machines. Not preserving this bit seems to work OK in all cases, even though this goes against the ACPI spec. http://bugzilla.kernel.org/show_bug.cgi?id=13289 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>
2009-05-27ACPICA: Region deletion: Ensure region object is removed from handler listLin Ming
Prevents a possible fault when a dynamic operation region is deleted. ACPICA BZ 507. http://acpica.org/bugzilla/show_bug.cgi?id=507 Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-27ACPICA: Eliminate extra call to NsGetParentNodeAlex Chiang
Was called twice in the same function with the same parameter. Alex Chiang. Signed-off-by: Alex Chiang <achiang@hp.com> 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>
2009-05-27ACPICA: Simplify internal operation region interfaceBob Moore
Changed address parameter to a simple offset. This removes the need for the caller to access the region object to obtain the physical address. 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>
2009-05-27ACPICA: Update Load() to use operation region interfacesBob Moore
Replace memory mapping with region access calls. Now, all region accesses go through the region handler as they should. 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>
2009-05-27ACPICA: New: AcpiInstallMethod - install a single control methodLin Ming
This interface enables the override or creation of a single control method. Useful to repair a bug or install a missing method. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-27ACPICA: Invalidate DdbHandle after table unloadLin Ming
Mark the DdbHandle as invalid after the table it refers to is unloaded. This is needed because the handle itself may not be deleted after the table unload, depending on whether it has been stored in a named object by the caller. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-27ACPICA: Fix reference count issues for DdbHandle objectLin Ming
Fix a problem where the DdbHandle could be prematurely deleted, possibly causing a fault. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-27ACPICA: Simplify and optimize NsGetNextNode functionBob Moore
Reduced parameter count and reduced code for this frequently used 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>
2009-05-27ACPICA: Additional validation of _PRT packages (resource mgr)Bob Moore
Fixes a possible fault when parsing an ill-formed _PRT package. 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>
2009-05-27ACPICA: Fix DebugObject output for DdbHandle objectsBob Moore
Was putting several extra spaces on the next line. 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>
2009-05-27ACPICA: Fix allowable release order for ASL mutex objectsBob Moore
The ACPI 4.0 specification has been changed to make the SyncLevel for mutex objects more useful. When releasing a mutex, the synclevel of the mutex must now be the same as the current sync level. This makes more sense. This change updates the code to match the spec. 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>
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