linux-toradex.git/drivers/acpi/acpi_extlog.c, branch v4.19-rc3

ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()

2017-06-07T10:20:49+00:00

acpi_evaluate_dsm() and friends take a pointer to a raw buffer of 16
bytes. Instead we convert them to use guid_t type. At the same time we
convert current users.

acpi_str_to_uuid() becomes useless after the conversion and it's safe to
get rid of it.

Acked-by: Rafael J. Wysocki 
Cc: Borislav Petkov 
Acked-by: Dan Williams 
Cc: Amir Goldstein 
Reviewed-by: Jarkko Sakkinen 
Reviewed-by: Jani Nikula 
Acked-by: Jani Nikula 
Cc: Ben Skeggs 
Acked-by: Benjamin Tissoires 
Acked-by: Joerg Roedel 
Acked-by: Adrian Hunter 
Cc: Yisen Zhuang 
Acked-by: Bjorn Helgaas 
Acked-by: Felipe Balbi 
Acked-by: Mathias Nyman 
Reviewed-by: Heikki Krogerus 
Acked-by: Mark Brown 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Christoph Hellwig

ACPI / extlog: Switch to use new generic UUID API

2017-06-05T17:42:02+00:00

There are new types and helpers that are supposed to be used in new code.

As a preparation to get rid of legacy types and API functions do
the conversion here.

Cc: Borislav Petkov 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Christoph Hellwig

EDAC: Rename report status accessors

2017-04-10T15:15:02+00:00

Change them to have the edac_ prefix.

No functionality change.

Signed-off-by: Borislav Petkov

x86/ras, EDAC, acpi: Assign MCE notifier handlers a priority

2017-01-24T08:14:57+00:00

Assign all notifiers on the MCE decode chain a priority so that they get
called in the correct order.

Suggested-by: Thomas Gleixner 
Signed-off-by: Borislav Petkov 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Tony Luck 
Cc: Yazen Ghannam 
Cc: linux-edac 
Link: http://lkml.kernel.org/r/20170123183514.13356-10-bp@alien8.de
Signed-off-by: Ingo Molnar

Merge tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2014-08-07T03:34:19+00:00

Pull ACPI and power management updates from Rafael Wysocki:
"Again, ACPICA leads the pack (47 commits), followed by cpufreq (18
commits) and system suspend/hibernation (9 commits).

From the new code perspective, the ACPICA update brings ACPI 5.1 to
the table, including a new device configuration object called _DSD
(Device Specific Data) that will hopefully help us to operate device
properties like Device Trees do (at least to some extent) and changes
related to supporting ACPI on ARM.

Apart from that we have hibernation changes making it use radix trees
to store memory bitmaps which should speed up some operations carried
out by it quite significantly. We also have some power management
changes related to suspend-to-idle (the "freeze" sleep state) support
and more preliminary changes needed to support ACPI on ARM (outside of
ACPICA).

The rest is fixes and cleanups pretty much everywhere.

Specifics:

- ACPICA update to upstream version 20140724. That includes ACPI 5.1
material (support for the _CCA and _DSD predefined names, changes
related to the DMAR and PCCT tables and ARM support among other
things) and cleanups related to using ACPICA's header files. A
major part of it is related to acpidump and the core code used by
that utility. Changes from Bob Moore, David E Box, Lv Zheng,
Sascha Wildner, Tomasz Nowicki, Hanjun Guo.

- Radix trees for memory bitmaps used by the hibernation core from
Joerg Roedel.

- Support for waking up the system from suspend-to-idle (also known
as the "freeze" sleep state) using ACPI-based PCI wakeup signaling
(Rafael J Wysocki).

- Fixes for issues related to ACPI button events (Rafael J Wysocki).

- New device ID for an ACPI-enumerated device included into the
Wildcat Point PCH from Jie Yang.

- ACPI video updates related to backlight handling from Hans de Goede
and Linus Torvalds.

- Preliminary changes needed to support ACPI on ARM from Hanjun Guo
and Graeme Gregory.

- ACPI PNP core cleanups from Arjun Sreedharan and Zhang Rui.

- Cleanups related to ACPI_COMPANION() and ACPI_HANDLE() macros
(Rafael J Wysocki).

- ACPI-based device hotplug cleanups from Wei Yongjun and Rafael J
Wysocki.

- Cleanups and improvements related to system suspend from Lan
Tianyu, Randy Dunlap and Rafael J Wysocki.

- ACPI battery cleanup from Wei Yongjun.

- cpufreq core fixes from Viresh Kumar.

- Elimination of a deadband effect from the cpufreq ondemand governor
and intel_pstate driver cleanups from Stratos Karafotis.

- 350MHz CPU support for the powernow-k6 cpufreq driver from Mikulas
Patocka.

- Fix for the imx6 cpufreq driver from Anson Huang.

- cpuidle core and governor cleanups from Daniel Lezcano, Sandeep
Tripathy and Mohammad Merajul Islam Molla.

- Build fix for the big_little cpuidle driver from Sachin Kamat.

- Configuration fix for the Operation Performance Points (OPP)
framework from Mark Brown.

- APM cleanup from Jean Delvare.

- cpupower utility fixes and cleanups from Peter Senna Tschudin,
Andrey Utkin, Himangi Saraogi, Rickard Strandqvist, Thomas
Renninger"

* tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (118 commits)
ACPI / LPSS: add LPSS device for Wildcat Point PCH
ACPI / PNP: Replace faulty is_hex_digit() by isxdigit()
ACPICA: Update version to 20140724.
ACPICA: ACPI 5.1: Update for PCCT table changes.
ACPICA/ARM: ACPI 5.1: Update for GTDT table changes.
ACPICA/ARM: ACPI 5.1: Update for MADT changes.
ACPICA/ARM: ACPI 5.1: Update for FADT changes.
ACPICA: ACPI 5.1: Support for the _CCA predifined name.
ACPICA: ACPI 5.1: New notify value for System Affinity Update.
ACPICA: ACPI 5.1: Support for the _DSD predefined name.
ACPICA: Debug object: Add current value of Timer() to debug line prefix.
ACPICA: acpihelp: Add UUID support, restructure some existing files.
ACPICA: Utilities: Fix local printf issue.
ACPICA: Tables: Update for DMAR table changes.
ACPICA: Remove some extraneous printf arguments.
ACPICA: Update for comments/formatting. No functional changes.
ACPICA: Disassembler: Add support for the ToUUID opererator (macro).
ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro.
ACPICA: Work around an ancient GCC bug.
ACPI / processor: Make it possible to get local x2apic id via _MAT
...

RAS, extlog: Adjust init flow

2014-06-25T20:27:26+00:00

Unless the platform has eMCA related capability, don't
need to check if there is conflict with EDAC driver.

Signed-off-by: Chen, Gong 
Acked-by: Borislav Petkov 
Signed-off-by: Tony Luck

trace, eMCA: Add a knob to adjust where to save event log

2014-06-25T20:27:12+00:00

To avoid saving two copies for one H/W event, add a new
file under debugfs to control how to save event log.
Once this file is opened, the perf/trace will be used,
in the meanwhile, kernel will stop printing event log
to the console. On the other hand, if this file is closed,
kernel will print event log to the console again.

Signed-off-by: Chen, Gong 
Acked-by: Borislav Petkov 
Signed-off-by: Tony Luck

trace, RAS: Add eMCA trace event interface

2014-06-25T20:26:47+00:00

Add trace interface to elaborate all H/W error related information.

Signed-off-by: Chen, Gong 
Acked-by: Borislav Petkov 
Signed-off-by: Tony Luck

ACPICA: Restore error table definitions to reduce code differences between Linux and ACPICA upstream.

2014-06-16T20:33:50+00:00

The following commit has changed ACPICA table header definitions:

 Commit: 88f074f4871a8c212b212b725e4dcdcdb09613c1
 Subject: ACPI, CPER: Update cper info

While such definitions are currently maintained in ACPICA. As the
modifications applying to the table definitions affect other OSPMs'
drivers, it is very difficult for ACPICA to initiate a process to
complete the merge. Thus this commit finally only leaves us divergences.

Revert such naming modifications to reduce the source code differecnes
between Linux and ACPICA upstream. No functional changes.

Signed-off-by: Lv Zheng 
Cc: Bob Moore 
Cc: Chen, Gong 
Cc: Tony Luck 
Cc: Borislav Petkov 
Signed-off-by: Rafael J. Wysocki

ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.

2014-05-27T16:13:08+00:00

ACPICA doesn't include protections around address space checking, Linux
build tests always complain increased sparse warnings around ACPICA
internal acpi_os_map/unmap_memory() invocations.  This patch tries to fix
this issue permanently.

There are 2 choices left for us to solve this issue:
 1. Add __iomem address space awareness into ACPICA.
 2. Remove sparse checker of __iomem from ACPICA source code.

This patch chooses solution 2, because:
 1.  Most of the acpi_os_map/unmap_memory() invocations are used for ACPICA.
     table mappings, which in fact are not IO addresses.
 2.  The only IO addresses usage is for "system memory space" mapping code in:
      drivers/acpi/acpica/exregion.c
      drivers/acpi/acpica/evrgnini.c
      drivers/acpi/acpica/exregion.c
    The mapped address is accessed in the handler of "system memory space"
    - acpi_ex_system_memory_space_handler().  This function in fact can be
    changed to invoke acpi_os_read/write_memory() so that __iomem can
    always be type-casted in the OSL layer.

According to the above investigation, we drew the following conclusion:
It is not a good idea to introduce __iomem address space awareness into
ACPICA mostly in order to protect non-IO addresses.

We can simply remove __iomem for acpi_os_map/unmap_memory() to remove
__iomem checker for ACPICA code. Then we need to enforce external usages
to invoke other APIs that are aware of __iomem address space.
The external usages are:
 drivers/acpi/apei/einj.c
 drivers/acpi/acpi_extlog.c
 drivers/char/tpm/tpm_acpi.c
 drivers/acpi/nvs.c

This patch thus performs cleanups in this way:
 1. Add acpi_os_map/unmap_iomem() to be invoked by non-ACPICA code.
 2. Remove __iomem from acpi_os_map/unmap_memory().

Signed-off-by: Lv Zheng 
Signed-off-by: Rafael J. Wysocki