Commit Graph

1285 Commits

Author SHA1 Message Date
Bob Moore
796ca77858 ACPICA: Update version to 20140724.
Version 20140724.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:25 +02:00
Bob Moore
67a3d6203c ACPICA: ACPI 5.1: Update for PCCT table changes.
One new subtable.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:24 +02:00
Tomasz Nowicki
54ea4247d3 ACPICA/ARM: ACPI 5.1: Update for GTDT table changes.
New fields and new subtables. Tomasz Nowicki.

Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:24 +02:00
Tomasz Nowicki
d0c383e48d ACPICA/ARM: ACPI 5.1: Update for MADT changes.
New subtables and changes to other subtables. Tomasz Nowicki.

Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:24 +02:00
Graeme Gregory
9eb1105bab ACPICA/ARM: ACPI 5.1: Update for FADT changes.
Adds ARM flags and FADT minor revision. Graeme Gregory.

Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:24 +02:00
Bob Moore
b3cc1356a6 ACPICA: ACPI 5.1: New notify value for System Affinity Update.
New value for the Notify() operator.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:24 +02:00
David E. Box
a9f65e01aa ACPICA: ACPI 5.1: Support for the _DSD predefined name.
Adds full support for _DSD. David Box.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:23 +02:00
Bob Moore
83118b0de3 ACPICA: Tables: Update for DMAR table changes.
Update table compiler and disassembler for new DMAR fields introduced
in Sept. 2013.

Note that Linux DMAR users need to be updated after applying this change.

[zetalog: changing drivers/iommu/dmar.c accordingly]

Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:23 +02:00
Bob Moore
90da690bc4 ACPICA: Disassembler: Add support for the ToUUID opererator (macro).
This change adds support to disassemble a UUID back to the original
ToUUID operator. It will detect a UUID within a standard AML Buffer.
Also, a description of the UUID is emitted for "known" UUIDs, defined
as UUIDs that are defined in the ACPI specification.

Since this is a change for disassembler which is not shipped in the
Linux kernel, the Linux kernel is not affected.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:22 +02:00
Bob Moore
9b62da7332 ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro.
It is already casted to acpi_size by ACPI_PTR_DIFF() macro.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-31 00:50:22 +02:00
Rafael J. Wysocki
e5e0243e36 Merge branches 'acpi-video' and 'acpi-hotplug'
* acpi-video:
  ACPI: move models with win8 brightness problems from win8 blacklist to use_native_backlight
  ACPI / video: Fix backlight taking 2 steps on a brightness up/down keypress

* acpi-hotplug:
  ACPI / hotplug / PCI: Fix sparse non static symbol warning
  ACPI / hotplug: Simplify acpi_set_hp_context()
  ACPI / hotplug / PCI: Eliminate acpiphp_dev_to_bridge()
2014-07-27 23:55:54 +02:00
Rafael J. Wysocki
91af125c33 Merge branches 'acpi-pnp' and 'acpi-pci'
* acpi-pnp:
  ACPI / PNP: Use ACPI_COMPANION() instead of ACPI_HANDLE()
  ACPI / PNP: do ACPI binding directly

* acpi-pci:
  ACPI / PCI: Use ACPI_COMPANION() instead of ACPI_HANDLE()
2014-07-27 23:55:35 +02:00
Rafael J. Wysocki
805c528158 Merge branches 'acpi-pm', 'acpi-sleep' and 'acpi-button'
* acpi-pm:
  ACPI / PM: Use ACPI_COMPANION() instead of ACPI_HANDLE()
  ACPI / PM: Always enable wakeup GPEs when enabling device wakeup
  ACPI / PM: Revork the handling of ACPI device wakeup notifications
  PM: Create PM workqueue if runtime PM is not configured too

* acpi-sleep:
  ACPI / sleep: Do not save NVS for new machines to accelerate S3

* acpi-button:
  ACPI / button: Do not propagate wakeup-from-suspend events
2014-07-27 23:55:19 +02:00
Rafael J. Wysocki
7e1c1a82f5 Merge branch 'acpi-headers'
* acpi-headers:
  ACPI: Add support to force header inclusion rules for <acpi/acpi.h>.
  ACPI / SFI: Fix wrong <acpi/acpi.h> inclusion in SFI/ACPI wrapper - table definitions.
  ACPICA: Linux: Allow ACPICA inclusion for CONFIG_ACPI=n builds.
  ACPICA: Linux: Add support to exclude <asm/acenv.h> inclusion.
  ACPICA: Linux: Add stub implementation of ACPICA 64-bit mathematics.
  ACPICA: Linux: Add stub support for Linux specific variables and functions.
2014-07-27 23:52:05 +02:00
Rafael J. Wysocki
92a18409ba Merge branch 'acpica'
* acpica: (30 commits)
  ACPICA: Add new GPE public interface - acpi_mark_gpe_for_wake.
  ACPICA: GPEs: Do not allow enable for GPEs that have no handler(s).
  ACPICA: Fix a regression for deletion of Alias() objects.
  ACPICA: Update version to 20140627
  ACPICA: Tables: Merge DMAR table structure updates
  ACPICA: Hardware: back port of a recursive locking fix
  ACPICA: utprint/oslibcfs: cleanup - no functional change
  ACPICA: Executer: Fix trivial issues in acpi_get_serial_access_bytes()
  ACPICA: OSL: Update acpidump to reduce source code differences
  ACPICA: acpidump: Reduce freopen() invocations to improve portability
  ACPICA: acpidump: Replace file IOs with new APIs to improve portability
  ACPICA: acpidump: Remove exit() from generic layer to improve portability
  ACPICA: acpidump: Add memory/string OSL usage to improve portability
  ACPICA: Common: Enhance acpi_getopt() to improve portability
  ACPICA: Common: Enhance cm_get_file_size() to improve portability
  ACPICA: Application: Enhance ACPI_USAGE_xxx/ACPI_OPTION with acpi_os_printf() to improve portability
  ACPICA: Utilities: Introduce acpi_log_error() to improve portability
  ACPICA: Utilities: Add formatted printing APIs
  ACPICA: OSL: Add portable file IO to improve portability
  ACPICA: OSL: Clean up acpi_os_printf()/acpi_os_vprintf() stubs
  ...
2014-07-27 23:51:45 +02:00
Rafael J. Wysocki
c12f07d17c ACPICA: Add new GPE public interface - acpi_mark_gpe_for_wake.
ACPICA commit c49dbfed2bc069d0038ea7e1294409bfde7c2c8c

Some potential callers of acpi_setup_gpe_for_wake may know in advance that
there won't be any notify handlers installed for device wake notifications
from the given GPE (one example is a button GPE in Linux). For these cases,
acpi_mark_gpe_for_wake should be used instead of acpi_setup_gpe_for_wake.
This will set the ACPI_GPE_CAN_WAKE flag for the GPE without trying to
setup implicit wake notification for it (since there's no handler method).
Rafael Wysocki.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
2014-07-23 23:12:33 +02:00
Lv Zheng
417b4a73b6 ACPI: Add support to force header inclusion rules for <acpi/acpi.h>.
As there is only CONFIG_ACPI=n processing in the <linux/acpi.h>, it is not
safe to include <acpi/acpi.h> directly for source out of Linux ACPI
subsystems.

This patch adds error messaging to warn developers of such wrong
inclusions.

In order not to be bisected and reverted as a wrong commit, warning
messages are carefully split into a seperate patch other than the wrong
inclusion cleanups.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-23 01:10:45 +02:00
Lv Zheng
d334c823b2 ACPICA: Linux: Add support to exclude <asm/acenv.h> inclusion.
The forthcoming patch will make <acpi/acpi.h> to be visible to all kernel
source code. Thus for the architectures that do not support ACPI and
haven't implemented <asm/acenv.h>, we need to make it excluded.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-23 01:10:44 +02:00
Lv Zheng
daba25d6e0 ACPICA: Linux: Add stub implementation of ACPICA 64-bit mathematics.
This patch adds default 64-bit mathematics in aclinux.h using do_div(). As
do_div() can be used for all Linux architectures, this can also be used as
stub macros for ACPICA 64-bit mathematics.

These macros are required by drivers/acpi/utmath.c when ACPI_USE_NATIVE_DIVIDE
is not defined.  It is used by ACPICA, so currently this is only meaningful to
CONFIG_ACPI builds.  So the kernel will not use these macros unless CONFIG_ACPI
is defined and ACPI_USE_DIVIDE is not defined.

For 64-bit kernels:
In include/acpi/actypes.h, for ACPI_MACHINE_WIDTH=64,
ACPI_USE_NATIVE_DIVIDE will be defined, thus these macros are not used.
In include/acpi/platform/aclinux.h, for __KERNEL__ surrounded code,
ACPI_MACHINE_WIDTH is defined to be BITS_PER_LONG.
So all 64-bit kernels do not use these macros.

For 32-bit kernels:
As mentioned above, these macros will be used when BITS_PER_LONG is 32.
Thus currently the i328 kernels are the only users for these macros.
But they won't use this default implementation provided by this patch,
because in arch/x86/include/asm/acenv.h, there are already overrides
implemented.  So these default macros are not used by 32-bit x86 (i386)
kernels.

These macros will only be used by future non x86 32-bit architectures
that try to support ACPI in Linux kernel.

During the period they do not have arch specific implementations of such
macros, we can avoid build errors for them.

And since they can see ACPICA functioning without implementing any arch
specific environment tunings, we  can also avoid function errors for
them.

As this implementation is not performance friendly, those architectures
still need to implement real support in the end.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-23 01:07:31 +02:00
Rafael J. Wysocki
f35cec2555 ACPI / PM: Always enable wakeup GPEs when enabling device wakeup
Wakeup GPEs are currently only enabled when setting up devices for
remote wakeup at run time.  During system-wide transitions they are
enabled by ACPICA at the very last stage of suspend (before asking
the BIOS to take over).  Of course, that only works for system
sleep states supported by ACPI, so in particular it doesn't work
for the "freeze" sleep state.

For this reason, modify the ACPI core device PM code to enable wakeup
GPEs for devices when setting them up for wakeup regardless of whether
that is remote wakeup at runtime or system wakeup.  That allows the
same device wakeup setup routine to be used for both runtime PM and
system-wide PM and makes it possible to reduce code size quite a bit.

This make ACPI-based PCI Wake-on-LAN work with the "freeze" sleep
state on my venerable Toshiba Portege R500 and should help other
systems too.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-23 01:00:53 +02:00
Rafael J. Wysocki
c072530f39 ACPI / PM: Revork the handling of ACPI device wakeup notifications
Since ACPI wakeup GPEs are going to be enabled during system suspend
as well as for runtime wakeup by a subsequent patch and the same
notify handlers will be used in both cases, rework the ACPI device
wakeup notification framework so that the part specific to physical
devices is always run asynchronously from the PM workqueue.  This
prevents runtime resume callbacks for those devices from being
run during system suspend and resume which may not be appropriate,
among other things.

Also make ACPI device wakeup notification handling a bit more robust
agaist subsequent removal of ACPI device objects, whould that ever
happen, and create a wakeup source object for each ACPI device
configured for wakeup so that wakeup notifications for those
devices can wake up the system from the "freeze" sleep state.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-23 01:00:45 +02:00
Tomasz Nowicki
594c7255dc acpi, apei, ghes: Factor out ioremap virtual memory for IRQ and NMI context.
GHES currently maps two pages with atomic_ioremap.  From now
on, NMI is architectural depended so there is no need to allocate
an NMI page for platforms without NMI support.

To make it possible to not use a second page, swap the existing
page order so that the IRQ context page is first, and the optional
NMI context page is second.  Then, use HAVE_ACPI_APEI_NMI to decide
how many pages are to be allocated.

Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2014-07-22 15:05:06 -07:00
Tomasz Nowicki
9dae3d0d9e apei, mce: Factor out APEI architecture specific MCE calls.
This commit abstracts MCE calls and provides weak corresponding default
implementation for those architectures which do not need arch specific
actions. Each platform willing to do additional architectural actions
should provides desired function definition. It allows us to avoid wrap
code into #ifdef in generic code and prevent new platform from introducing
dummy stub function too.

Initially, there are two APEI arch-specific calls:
- arch_apei_enable_cmcff()
- arch_apei_report_mem_error()
Both interact with MCE driver for X86 architecture.

Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2014-07-22 15:05:06 -07:00
Lv Zheng
a8278efd84 ACPICA: Linux: Add stub support for Linux specific variables and functions.
There are global variables and functions not upstreamed to the ACPICA code
base.  Such symbols still can be referenced by external users as they are
listed in the acpixf.h.  This patch uses ACPI_GLOBAL and
ACPI_EXTERNAL_RETURN_STATUS mechanism to add stub support for such symbols.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-20 01:34:57 +02:00
Rafael J. Wysocki
ba574dc856 ACPI / hotplug: Simplify acpi_set_hp_context()
Since all of the acpi_set_hp_context() callers pass at least one NULL
function pointer and one caller passes NULL function pointers only
to it, drop function pointer arguments from acpi_set_hp_context()
and make the callers initialize the function pointers in struct
acpi_hotplug_context by themselves before passing it to
acpi_set_hp_context().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2014-07-16 01:45:40 +02:00
Bob Moore
587fc727ad ACPICA: Update version to 20140627
Version 20140627.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:28 +02:00
Lv Zheng
1538ac64f5 ACPICA: Tables: Merge DMAR table structure updates
This patch is a back port result of the following Linux commit:
  Author: David Woodhouse <David.Woodhouse@intel.com>
  Subject: iommu/vt-d: Add ACPI namespace device reporting structures

ACPICA need to handle old compilers where u8 object_name[] is only allowed
for an initialized variable. This patch reduces back port source code
differences between Linux and ACPICA upstream.

Cc: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:28 +02:00
Lv Zheng
fbee6b21a3 ACPICA: acpidump: Add memory/string OSL usage to improve portability
This patch adds code to use generic OSL for acpidump to improve the
portability of this tool. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:27 +02:00
Lv Zheng
a92e95773d ACPICA: Common: Enhance acpi_getopt() to improve portability
This patch enhances acpi_getopt() by converting the standard C library
invocations into portable ACPI string APIs and acpi_log_error() to improve
portability. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:26 +02:00
Lv Zheng
2e70da4c51 ACPICA: Utilities: Introduce acpi_log_error() to improve portability
Invocations like fprintf(stderr) and perror() are not portable, this patch
introduces acpi_log_error() as a replacement, it is implemented using new
portable API - acpi_ut_file_vprintf().

Note that though acpi_os_initialize() need to be invoked prior than using
this new API, since no users are introduced in this patch, such invocations
are not added for applications that link utprint.c in this patch. Futher
patches that introduce users of acpi_log_error() should take care of this.

This patch is only useful for ACPICA applications, most of which are not
shipped in the Linux kernel.

Note that follow-up commits will update acpidump to use this new API to
improve portability. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:26 +02:00
Lv Zheng
80a648c12e ACPICA: Utilities: Add formatted printing APIs
This patch introduces formatted printing APIs to handle ACPICA specific
formatted print requirements. Currently only specific OSPMs will use this
customized printing support, Linux kernel doesn't use these APIs at this
time. It will be enabled for Linux kernel resident ACPICA after being well
tested. So currently this patch is a no-op.

The specific formatted printing APIs are useful to ACPICA as:
 1. Some portable applications do not link standard C library, so they
    cannot use standard formatted print APIs directly.
 2. Platform specific printing format may differ and thus not portable, for
    example, u64 is %ull for Linux kernel and is %uI64 for some MSVC
    versions.
 3. Platform specific printing format may conflict with ACPICA's usages
    while it is not possible for ACPICA developers to test their code for
    all platforms. For example, developers may generate %pRxxx while Linux
    kernel treats %pR as structured resource printing and decodes variable
    argument as a "struct resource" pointer.
This patch solves above issues by introducing the new APIs.

Note that users of such APIs are not introduced in this patch. Users of
acpi_os_file_vprintf()/acpi_ut_file_printf() need to invoke acpi_os_initialize(),
this should be taken care by the further patches where such users are
introduced. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:25 +02:00
Lv Zheng
7824f44ecf ACPICA: OSL: Add portable file IO to improve portability
This patch adds portable file IO to generic OSL to improve the portability
of the applications.

A portable application may use different file IO interfaces than the
standard C library ones. This patch thus introduces an abstract file IO
layer into the generic OSL.

Note that this patch does not introduce users of such interfaces, further
patches should introduce users one by one carefully with build tests
performed. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:25 +02:00
Lv Zheng
afbdc6aece ACPICA: OSL: Update environments to improve portability
This patch contains some environment updates that will be used by acpidump
because:
 1. The follow-up commits will release osunixxf.c to the Linux kernel for
    acpidump to link, and
 2. Such environment settings will be used to avoid linkage issues.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:25 +02:00
Aaron Lu
0b9f7d93ca ACPI / i915: ignore firmware requests for backlight change
Some Thinkpad laptops' firmware will initiate a backlight level change
request through operation region on the events of AC plug/unplug, but
since we are not using firmware's interface to do the backlight setting
on these affected laptops, we do not want the firmware to use some
arbitrary value from its ASL variable to set the backlight level on
AC plug/unplug either.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=76491
Link: https://bugzilla.kernel.org/show_bug.cgi?id=77091
Reported-and-tested-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Reported-and-tested-by: Anton Gubarkov <anton.gubarkov@gmail.com>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-07 23:38:05 +02:00
Zhang Rui
f1b1dc845c ACPI / PNP: do ACPI binding directly
PNPACPI uses acpi_bus_type to do ACPI binding for the PNPACPI devices.

This is overkill because PNPACPI code already knows which ACPI
device object to bind during PNPACPI device enumeration.

This patch removes acpi_pnp_bus and does the binding by invoking
acpi_bind_one() directly after device enumerated.

This also fixes a bug in the previous code that some PNPACPI devices failed
to be bound because
 1. the ACPI device _HID is not pnpid, e.g. "MSFT0001", but its _CID is,
    e.g. "PNP0303", thus ACPI _CID is used as the pnp device device id.
 2. device is bound only if the pnp device id matches the ACPI device _HID.

Tested-by: Prigent Christophe <christophe.prigent@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-07 14:07:38 +02:00
Fabian Frederick
92c4d2ad3c ACPI / processor replace __attribute__((packed)) by __packed
This patch fixes checkpatch warnings:

"WARNING: __packed is preferred over __attribute__((packed))"

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-06-17 14:00:15 +02:00
Lv Zheng
0a00fd5e20 ACPICA: Restore error table definitions to reduce code differences between Linux and ACPICA upstream.
The following commit has changed ACPICA table header definitions:

 Commit: 88f074f487
 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 <lv.zheng@intel.com>
Cc: Bob Moore <robert.moore@intel.com>
Cc: Chen, Gong <gong.chen@linux.intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-06-16 22:33:50 +02:00
Rafael J. Wysocki
d9bd44933c Merge branch 'acpi-video'
* acpi-video:
  ACPI / video: Add 4 new models to the use_native_backlight DMI list
  ACPI / video: Add use native backlight quirk for the ThinkPad W530
  ACPI / video: Unregister the backlight device if a raw one shows up later
  backlight: Add backlight device (un)registration notification
  nouveau: Don't check acpi_video_backlight_support() before registering backlight
  acer-wmi: Add Aspire 5741 to video_vendor_dmi_table
  acer-wmi: Switch to acpi_video_unregister_backlight
  ACPI / video: Add an acpi_video_unregister_backlight function
  ACPI / video: Don't register acpi_video_resume notifier without backlight devices
  ACPI / video: change acpi-video brightness_switch_enabled default to 0
2014-06-03 23:12:37 +02:00
Rafael J. Wysocki
0e36d43c9c Merge branch 'acpica'
* acpica: (63 commits)
  ACPICA: Namespace: Remove _PRP method support.
  ACPI: Fix x86 regression related to early mapping size limitation
  ACPICA: Tables: Add mechanism to control early table checksum verification.
  ACPICA: acpidump: Fix repetitive table dump in -n mode.
  ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.
  ACPICA: Clean up redudant definitions already defined elsewhere
  ACPICA: Linux headers: Add <asm/acenv.h> to remove mis-ordered inclusion of <asm/acpi.h>
  ACPICA: Linux headers: Add <acpi/platform/aclinuxex.h>
  ACPICA: Linux headers: Remove ACPI_PREEMPTION_POINT() due to no usages.
  ACPICA: Update version to 20140424.
  ACPICA: Comment/format update, no functional change.
  ACPICA: Events: Update GPE handling and initialization code.
  ACPICA: Remove extraneous error message for large number of GPEs.
  ACPICA: Tables: Remove old mechanism to validate if XSDT contains NULL entries.
  ACPICA: Tables: Add new mechanism to skip NULL entries in RSDT and XSDT.
  ACPICA: acpidump: Add support to force using RSDT.
  ACPICA: Back port of improvements on exception code.
  ACPICA: Back port of _PRP update.
  ACPICA: acpidump: Fix truncated RSDP signature validation.
  ACPICA: Linux header: Add support for stubbed externals.
  ...
2014-06-03 23:12:27 +02:00
Rafael J. Wysocki
b04c58b1ed Merge branch 'acpi-enumeration'
* acpi-enumeration:
  ACPI / scan: use platform bus type by default for _HID enumeration
  ACPI / scan: always register ACPI LPSS scan handler
  ACPI / scan: always register memory hotplug scan handler
  ACPI / scan: always register container scan handler
  ACPI / scan: Change the meaning of missing .attach() in scan handlers
  ACPI / scan: introduce platform_id device PNP type flag
  ACPI / scan: drop unsupported serial IDs from PNP ACPI scan handler ID list
  ACPI / scan: drop IDs that do not comply with the ACPI PNP ID rule
  ACPI / PNP: use device ID list for PNPACPI device enumeration
  ACPI / scan: .match() callback for ACPI scan handlers
2014-06-03 23:12:20 +02:00
Rafael J. Wysocki
a392f7d4af Merge branch 'acpi-pm'
* acpi-pm:
  ACPI / PM: Export rest of the subsys PM callbacks
  ACPI / PM: Avoid resuming devices in ACPI PM domain during system suspend
  ACPI / PM: Hold ACPI scan lock over the "freeze" sleep state
  ACPI / PM: Export acpi_target_system_state() to modules
2014-06-03 23:11:42 +02:00
Rafael J. Wysocki
91ab377ba3 Merge branches 'acpi-tables' and 'acpi-general'
* acpi-tables:
  ACPI: Fix conflict between customized DSDT and DSDT local copy

* acpi-general:
  ACPI: Add acpi_bus_attach_private_data() to attach data to ACPI handle
2014-06-03 23:10:06 +02:00
Lv Zheng
729ddb657f ACPICA: Namespace: Remove _PRP method support.
The _PRP method is not going to be a part of the ACPI standard. This patch
removes its support code introduced by the following commits:
 1. ACPICA: Predefined names: Add support for the _PRP method.
 2. ACPICA: Update for _PRP predefined name.
 3. ACPICA: Add support for _LPD and _PRP methods.
 4. ACPICA: Back port of _PRP update.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-06-03 14:53:35 +02:00
Lv Zheng
47d68c7f68 ACPICA: Tables: Add mechanism to control early table checksum verification.
It is reported that Linux x86 kernel cannot map large tables. The following
large SSDT table on such platform fails to pass checksum verification and
cannot be installed:
 ACPI: SSDT 0x00000000B9638018 07A0C4 (v02 INTEL  S2600CP  00004000 INTL 20100331)

It sounds strange that in the 64-bit virtual memory address space, we
cannot map a single ACPI table to do checksum verification. The root cause
is:
 1. ACPICA doesn't split IO memory mapping and table mapping;
 2. Linux x86 OSL implements acpi_os_map_memory() using a size limited fix-map
    mechanism during early boot stage, which is more suitable for only IO
    mappings.

ACPICA originally only mapped table header for signature validation, and
this header mapping is required by OSL override mechanism. There was no
checksum verification because we could not map the whole table using this
OSL. While the following ACPICA commit enforces checksum verification by
mapping the whole table during Linux boot stage and it finally triggers
this issue on some platforms:
 Commit: 86dfc6f339
 Subject: ACPICA: Tables: Fix table checksums verification before installation.

Before doing further cleanups for the OSL table mapping and override
implementation, this patch introduces an option for such OSPMs to
temporarily discard the checksum verification feature. It then can be
re-enabled easily when the ACPICA and the underlying OSL is ready.

This patch also deletes a comment around the limitation of mappings because
it is not correct. The limitation is not how many times we can map in the
early stage, but the OSL mapping facility may not be suitable for mapping
the ACPI tables and thus may complain us the size limitation.

The acpi_tb_verify_table() is renamed to acpi_tb_verify_temp_table() due to the
work around added, it now only applies to the table descriptor that hasn't
been installed and cannot be used in other cases. Lv Zheng.

Tested-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-06-01 00:18:52 +02:00
Rafael J. Wysocki
549e68455c ACPI / scan: introduce platform_id device PNP type flag
Only certain types of ACPI device objects can be enumerated as
platform devices, so in order to distinguish them from the others
introduce a new ACPI device PNP type flag, platform_id, and set it
for devices with a valid _HID to start with.

This change is based on a Zhang Rui's prototype.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2014-05-30 16:04:36 +02:00
Rafael J. Wysocki
aca0a4eb4e ACPI / scan: .match() callback for ACPI scan handlers
Introduce a .match() callback for ACPI scan handlers to allow them to
use more elaborate matching algorithms if necessary.  That is needed
for the upcoming PNP scan handler in particular.

This change is based on a Zhang Rui's prototype.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2014-05-30 16:04:35 +02:00
Lv Zheng
a238317ce8 ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.
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 <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 18:13:08 +02:00
Lv Zheng
92985ef1db ACPICA: Clean up redudant definitions already defined elsewhere
Since mis-order issues have been solved, we can cleanup redundant
definitions that already have defaults in <acpi/platform/acenv.h>.

This patch removes redudant environments for __KERNEL__ surrounded code.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 18:13:08 +02:00
Lv Zheng
07d8391433 ACPICA: Linux headers: Add <asm/acenv.h> to remove mis-ordered inclusion of <asm/acpi.h>
There is a mis-order inclusion for <asm/acpi.h>.

As we will enforce including <linux/acpi.h> for all Linux ACPI users, we
can find the inclusion order is as follows:

<linux/acpi.h>
  <acpi/acpi.h>
   <acpi/platform/acenv.h>
    (acenv.h before including aclinux.h)
    <acpi/platform/aclinux.h>
...........................................................................
     (aclinux.h before including asm/acpi.h)
     <asm/acpi.h>                             @Redundant@
      (ACPICA specific stuff)
...........................................................................
...........................................................................
      (Linux ACPI specific stuff) ? - - - - - - - - - - - - +
     (aclinux.h after including asm/acpi.h)   @Invisible@   |
    (acenv.h after including aclinux.h)       @Invisible@   |
   other ACPICA headers                       @Invisible@   |
............................................................|..............
  <acpi/acpi_bus.h>                                         |
  <acpi/acpi_drivers.h>                                     |
  <asm/acpi.h> (Excluded)                                   |
   (Linux ACPI specific stuff) ! <- - - - - - - - - - - - - +

NOTE that, in ACPICA, <acpi/platform/acenv.h> is more like Kconfig
generated <generated/autoconf.h> for Linux, it is meant to be included
before including any ACPICA code.

In the above figure, there is a question mark for "Linux ACPI specific
stuff" in <asm/acpi.h> which should be included after including all other
ACPICA header files.  Thus they really need to be moved to the position
marked with exclaimation mark or the definitions in the blocks marked with
"@Invisible@" will be invisible to such architecture specific "Linux ACPI
specific stuff" header blocks.  This leaves 2 issues:
1. All environmental definitions in these blocks should have a copy in the
   area marked with "@Redundant@" if they are required by the "Linux ACPI
   specific stuff".
2. We cannot use any ACPICA defined types in <asm/acpi.h>.

This patch splits architecture specific ACPICA stuff from <asm/acpi.h> to
fix this issue.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 18:13:07 +02:00
Lv Zheng
d13bd5a602 ACPICA: Linux headers: Add <acpi/platform/aclinuxex.h>
From ACPICA's perspective, <acpi/actypes.h> should be included after
inclusion of <acpi/platform/acenv.h>.  But currently in Linux,
<acpi/platform/aclinux.h> included by <acpi/platform/acenv.h> has
included <acpi/actypes.h> to find ACPICA types for inline functions.

This causes the following problem:
1. Redundant code in <asm/acpi.h> and <acpi/platform/aclinux.h>:
   Linux must be careful to keep conditions for <acpi/actypes.h> inclusion
   consistent with the conditions for <acpi/platform/aclinux.h> inclusion.
   Which finally leads to the issue that we have to keep many useless macro
   definitions in <acpi/platform/aclinux.h> or <asm/acpi.h>.
   Such conditions include:
     COMPILER_DEPENDENT_UINT64
     COMPILER_DEPENDENT_INT64
     ACPI_INLINE
     ACPI_SYSTEM_XFACE
     ACPI_EXTERNAL_XFACE
     ACPI_INTERNAL_XFACE
     ACPI_INTERNAL_VAR_XFACE
     ACPI_MUTEX_TYPE
     DEBUGGER_THREADING
     ACPI_ACQUIRE_GLOBAL_LOCK
     ACPI_RELEASE_GLOBAL_LOCK
     ACPI_FLUSH_CPU_CACHE
   They have default implementations in <include/acpi/platform/acenv.h>
   while Linux need to keep a copy in <asm/acpi.h> to avoid build errors.

This patch introduces <acpi/platform/aclinuxex.h> to fix this issue by
splitting conditions and declarations (most of them are inline functions)
into 2 header files so that the wrong inclusion of <acpi/actypes.h> can be
removed from <acpi/platform/aclinux.h>.

This patch also removes old ACPI_NATIVE_INTERFACE_HEADER mechanism which is
not preferred by Linux and adds the platform/acenvex.h to be the solution
to solve this issue.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 18:13:07 +02:00
Lv Zheng
636fcfefa2 ACPICA: Linux headers: Remove ACPI_PREEMPTION_POINT() due to no usages.
This patch deletes deprecated ACPI_PREEMPTION_POINT(), there is no user
for it in Linux kernel now.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 18:13:07 +02:00
Rafael J. Wysocki
c9b77a4070 Merge back earlier ACPICA material.
Conflicts:
	drivers/acpi/acpica/acglobal.h
2014-05-27 18:11:38 +02:00
Lan Tianyu
72013795a7 ACPI: Add acpi_bus_attach_private_data() to attach data to ACPI handle
There is already acpi_bus_get_private_data() to get ACPI handle data
which is associated with acpi_bus_private_data_handler(). This patch
is to add acpi_bus_attach_private_data() to make a pair and facilitate
to attach and get data to/from ACPI handle.

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-27 01:19:54 +02:00
Hans de Goede
1b7f37e127 ACPI / video: Add an acpi_video_unregister_backlight function
Add an acpi_video_unregister_backlight function, which only unregisters
the backlight device, and leaves the acpi_notifier in place. Some acpi_vendor
driver need this as they don't want the acpi_video# backlight device, but do
need the acpi-video driver for hotkey handling.

Chances are that this new acpi_video_unregister_backlight() is actually
what existing acpi_vendor drivers have wanted all along. Currently acpi_vendor
drivers which want to disable the acpi_video# backlight device, make 2 calls:

acpi_video_dmi_promote_vendor();
acpi_video_unregister();

The intention here is to make things independent of when acpi_video_register()
gets called. As acpi_video_register() will get called on acpi-video load time
on non intel gfx machines, while it gets called on i915 load time on intel
gfx machines.

This leads to the following 2 interesting scenarios:

 a) intel gfx:
  1) acpi-video module gets loaded (as it is a dependency of acpi_vendor
     and i915)
  2) acpi-video does NOT call acpi_video_register()
  3) acpi_vendor loads (lets assume it loads before i915), calls
     acpi_video_dmi_promote_vendor(); which sets
     ACPI_VIDEO_BACKLIGHT_DMI_VENDOR
  4) calls acpi_video_unregister -> not registered, nop
  5) i915 loads, calls acpi_video_register
  6) acpi_video_register registers the acpi_notifier for the hotkeys,
     does NOT register a backlight device because of
     ACPI_VIDEO_BACKLIGHT_DMI_VENDOR

 b) non intel gfx
  1) acpi-video module gets loaded (as it is a dependency acpi_vendor)
  2) acpi-video calls acpi_video_register()
  3) acpi_video_register registers the acpi_notifier for the hotkeys,
     and a backlight device
  4) acpi_vendor loads, calls acpi_video_dmi_promote_vendor()
  5) calls acpi_video_unregister, this unregisters BOTH the acpi_notifier
     for the hotkeys AND the backlight device

So here we have possibly the same acpi_vendor module, making the same calls,
but with different results, in one cases acpi-video does handle hotkeys,
in the other it does not.

Note that the a) scenario turns into b) if we assume the i915 module loads
before the vendor_acpi module, so we also have different behavior depending
on module loading order!

So as said I believe that quite a few existing acpi_vendor modules really
always want the behavior of a), hence this patch adds a new
acpi_video_unregister_backlight() which gives the behavior of a) independent
of module loading order.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-20 13:41:42 +02:00
Rafael J. Wysocki
f25c0ae2b4 ACPI / PM: Avoid resuming devices in ACPI PM domain during system suspend
Rework the ACPI PM domain's PM callbacks to avoid resuming devices
during system suspend (in order to modify their wakeup settings etc.)
if that isn't necessary.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-20 13:22:48 +02:00
Hanjun Guo
6b90f55f63 ACPI / PCI: Stub out pci_acpi_crs_quirks() and make it x86 specific
For pci_acpi_crs_quirks(), ia64 already doesn't use it, and we can
not foresee it should be used in ARM64, so stub out pci_acpi_crs_quirks()
to avoid introducing platform specific dummy stub function.

Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 01:09:47 +02:00
Bob Moore
bc381eebd4 ACPICA: Update version to 20140424.
Version 20140424.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:02 +02:00
Bob Moore
1011080dd2 ACPICA: Comment/format update, no functional change.
Add some additional commenting the the public acpixf.h file.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:02 +02:00
Bob Moore
fea79bc01c ACPICA: Back port of improvements on exception code.
This is the linuxize result of the following commit:
  Subject: ACPICA: Improve handling of exception code blocks.
  Split exception codes into three distinct blocks; for the main
  ASL compiler, Table compiler, and the preprocessor. This allows
  easy addition of new codes into each block without disturbing
  the others. Adds one new file, aslmessages.c

The iASL changes are not in this patch as iASL currently is not
shipped in the kernel.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:01 +02:00
Bob Moore
e57db4093d ACPICA: Back port of _PRP update.
This patch is the linuxize result of the following commit:
  Subject: ACPICA: Add check for _PRP/_HID dependency, with error message.
  _PRP requires that a _HID appears in the same scope.

The iASL changes are not in this patch as iASL currently is not
shipped in the kernel.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:01 +02:00
Lv Zheng
42873a84a2 ACPICA: Linux header: Add support for stubbed externals.
Linux wants to include all header files but leave empty inline
stub variables for a feature that is not configured during build.

This patch configures ACPICA external globals/macros/functions out and
defines them into no-op when CONFIG_ACPI is not enabled.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:01 +02:00
Lv Zheng
8b9c1152a0 ACPICA: OSL: Add configurability for generic external functions.
OSPMs like Linux trend to include all header files but leave empty inline
stub functions for a feature that is not configured during build.
This patch adds wrappers mechanism to be used around ACPICA external
interfaces to facilitate OSPM with such configurability.

This patch doesn't include code for Linux to use this new mechanism, thus
no functional change.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:01 +02:00
Lv Zheng
0dedb3c43c ACPICA: OSL: Add section to collect the divergence in acpixf.h.
This patch re-orders the interface prototypes defined in acpixf.h, moving
those having not back ported to ACPICA into a seperate section to reduce
the source code differences between Linux and ACPICA.

This can help to reduce the cost of linuxizing the follow up commits.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:01 +02:00
Lv Zheng
1ce28c32d8 ACPICA: OSL: Add configurability for debug output functions.
This patch extends ACPI_HW_DEPENDENT_x mechanism to all debugging output
related functions so that the OSPMs can have full control to configure
them into stub functions.

This patch doesn't include code for Linux to use this new mechanism, thus
no functional change.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:01 +02:00
Lv Zheng
407e22afcf ACPICA: OSL: Add configurability for error message functions.
This patch extends ACPI_HW_DEPENDENT_x mechanism to all error message
related functions so that the OSPMs can have full control to configure them
into stub functions.

This patch doesn't include code for Linux to use this new mechanism, thus
no functional change.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:01 +02:00
Lv Zheng
d5caf1cdc4 ACPICA: OSL: Add configurability for memory allocation macros.
OSPMs like Linux trend to include all header files but leave empty stub
macros for a feature that is not configured during build.

For macros defined without other symbols referencesd it is safe to leave
them without protections.

By investigation, there are only the following internal/external
symbols referenced by the ACPICA macros:
1. C library symbols, including string, ctype, stdarg APIs.  Since such
   symbols are always accessbile in the kernel source tree, it is safe to
   leave macros referencing them without protected for Linux.
2. ACPICA OSL symbols, such symbols are designed to be used only by ACPICA
   internal APIs.  And there are macros directly referencing mutex and
   memory allocation OSL symbols.  We need to examine the external usages
   of such macros.
   For macros referencing the mutex OSL symbols, fortunately, there is no
   external user directly invoking such macros.
   ========================================================================
   !! IMPORTANT !!
   ========================================================================
   For macros referencing memory allocation OSL symbols -
    1. 'free' - ACPI_FREE
    2. 'alloc' - ACPI_ALLOCATE, ACPI_ALLOCATE_ZEROED, ACPI_ALLOCATE_BUFFER,
                 ACPI_ALLOCATE_LOCAL_BUFFER
   there are external users directly invoking 'alloc' macros.  And the more
   complicated situation is the reversals of such macros are not ACPI_FREE
   but acpi_os_free (or kfree) in Linux.  Though we can define such macros
   into no-op, we in fact cannot define their reversals into no-op.
   This patch adds mechanism to protect ACPICA memory allocation APIs for
   Linux so that acpi_os_free (or kfree) invoked in Linux can have a zero
   address returned by 'alloc' macros to free.  In this
   way, acpi_os_free (or kfree) can be converted into no-op.
   ========================================================================
3. ACPI_OFFSET and other macros that would access structure members, we
   need to check if such structure members are not accessible under a
   specific configuration.  Fortunately, currently Linux doesn't use such
   structure members when CONFIG_ACPI is disabled.

This patch thus only adds mechanism useful for implementing stubs for
ACPICA provided macros - the configurability of memory allocation APIs.

This patch doesn't include code for Linux to use this new mechanism, thus
no functional changes.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:00 +02:00
Lv Zheng
3a2f3a3383 ACPICA: OSL: Move external globals from utglobal.c to acpixf.h using ACPI_INIT_GLOBAL/ACPI_GLOBAL.
OSPMs like Linux trend to include all header files but leave empty stub
macros for a feature that is not configured during build.

This patch cleans up global variables that are defined in utglobal.c using
ACPI_INIT_GLOBAL mechanism.  In Linux, such global variables are used by
the subsystems external to ACPICA.
This patch also cleans up global variables that are defined in utglobal.c
using ACPI_GLOBAL mechanism.  In Linux, such global variables are not used
or should not be used by the subsystems external to ACPICA.

External global variables can be redefined by OSPMs using
ACPI_INIT_GLOBAL/ACPI_GLOBAL macros.  Thus the ACPI_GLOBAL/ACPI_INIT_GLOBAL
mechanisms can be used by OSPM to implement stubs for such external
globals.

This patch doesn't include code for Linux to use this new mechanism, thus
no functional changes.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:00 +02:00
Bob Moore
1a49b72c4e ACPICA: Comment updates - no functional change.
Change all instances of "sub-table" to "subtable" for
consistency.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:00 +02:00
Bob Moore
d36d4e30bd ACPICA: Add support for LPIT table.
Adds header, disassembler, table compiler, and template support
for the Low Power Idle Table (LPIT).

Note that the disassembler and table compiler are not shipped in
the kernel.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:55:00 +02:00
Lv Zheng
3035ff70e6 ACPICA: Update global variable definitions. No functional change.
Move all of the public globals to acpixf.h for the convenience
of users. Also:

Adds #ifndef/#endif conditions arround ACPI_GLOBAL and
ACPI_INIT_GLOBAL definition so that OSPMs might be able to:
1. Redefine ACPI_GLOBAL/ACPI_INIT_GLOBAL into no-op, and
2. Redefine external global variables into immediates to implement stubs
   for them.
Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-07 00:54:59 +02:00
Bob Moore
35476c75ef ACPICA: Update version to 20140325.
Version 20140325.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:40 +02:00
Bob Moore
ed6f1d44da ACPICA: Table Manager: Misc cleanup and renames, no functional change.
Some various cleanups and renames.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:39 +02:00
Lv Zheng
caf4a15c5f ACPICA: Tables: Add acpi_install_table() API for early table installation.
This patch adds a new API - acpi_install_table(). OSPMs can use this API
to install tables during early boot stage.  Lv Zheng.

References: https://lkml.org/lkml/2014/2/28/372
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:39 +02:00
Lv Zheng
a94e88cdd8 ACPICA: Tables: Avoid SSDT installation with acpi_gbl_disable_ssdt_table_load.
It is reported that when acpi_gbl_disable_ssdt_table_load is specified, user
still can see it installed into /sys/firmware/acpi/tables on Linux boxes.
This is because the option only stops table "loading", but doesn't stop
table "installing", thus it is still in the acpi_gbl_root_table_list. With
previous cleanups, it is possible to prevent SSDT installations to make
it not such confusing.  The global variable is also renamed.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:39 +02:00
Lv Zheng
8a216d7f6a ACPICA: Tables: Cleanup ACPI_TABLE_ORIGIN_xxx flags.
This patch refines ACPI_TABLE_ORIGIN_xxx flags.  No functional changes.

The previous commits have introduced the following internal APIs:
1. acpi_tb_acquire_table: Acquire struct acpi_table_header according to
                       ACPI_TABLE_ORIGIN_xxx flags.
2. acpi_tb_release_table: Release struct acpi_table_header according to
                       ACPI_TABLE_ORIGIN_xxx flags.
3. acpi_tb_install_table: Make struct acpi_table_desc.Address not NULL according to
                       ACPI_TABLE_ORIGIN_xxx flags.
4. acpi_tb_uninstall_table: Make struct acpi_table_desc.Address NULL according to
                         ACPI_TABLE_ORIGIN_xxx flags.
5. acpi_tb_validate_table: Make struct acpi_table_desc.Pointer not NULL according to
                        ACPI_TABLE_ORIGIN_xxx flags.
6. acpi_tb_invalidate_table: Make struct acpi_table_desc.Pointer NULL according to
                          ACPI_TABLE_ORIGIN_xxx flags.
It thus detects that the ACPI_TABLE_ORIGIN_UNKNOWN is redundant to
ACPI_TABLE_ORIGIN_OVERRIDE.

The ACPI_TABLE_ORIGIN_xxTERN_VIRTUAL flags are named as VIRTUAL in order
not to confuse with x86 logical address, this patch also renames all
"logical override" into "virtual override".

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:39 +02:00
Colin Ian King
72bdad9692 ACPICA: Linux-specific header: Add support for PPC64 compilation.
Adds PPC64 as a 64-bit architecture. Colin Ian King.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:38 +02:00
Lv Zheng
a3a80da3ef ACPICA: Clean up comment divergences in aclinux.h
When the following commmit is back ported to ACPICA, comments have been
updated:
  Subject: ACPICA: Linux-specific header: Update support for Linux/acpi
           applications.

This patch back ports the differences between the ACPICA upstream and
Linux.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
[rjw: Subject]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:37 +02:00
Bob Moore
7ed8232648 ACPICA: gcc-specific: Fix possible issue with the strchr function.
Some versions of gcc implement strchr via a macro, which either
contains bugs or can provoke a bug in the compiler. This change
fixes a possible compile-time error when using this function.
The problem is usually seen when compiling the getopt.c module.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-04-20 22:59:37 +02:00
Linus Torvalds
3f583bc219 IOMMU Upates for Linux v3.15
This time a few more updates queued up.
 
 	* Rework VT-d code to support ACPI devices
 
 	* Improvements for memory and PCI hotplug support
 	  in the VT-d driver
 
 	* Device-tree support for OMAP IOMMU
 
 	* Convert OMAP IOMMU to use devm_* interfaces
 
 	* Fixed PASID support for AMD IOMMU
 
 	* Other random cleanups and fixes for OMAP, ARM-SMMU
 	  and SHMOBILE IOMMU
 
 Most of the changes are in the VT-d driver because some rework was
 necessary for better hotplug and ACPI device support.
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Merge tag 'iommu-updates-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU upates from Joerg Roedel:
 "This time a few more updates queued up.

   - Rework VT-d code to support ACPI devices

   - Improvements for memory and PCI hotplug support in the VT-d driver

   - Device-tree support for OMAP IOMMU

   - Convert OMAP IOMMU to use devm_* interfaces

   - Fixed PASID support for AMD IOMMU

   - Other random cleanups and fixes for OMAP, ARM-SMMU and SHMOBILE
     IOMMU

  Most of the changes are in the VT-d driver because some rework was
  necessary for better hotplug and ACPI device support"

* tag 'iommu-updates-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (75 commits)
  iommu/vt-d: Fix error handling in ANDD processing
  iommu/vt-d: returning free pointer in get_domain_for_dev()
  iommu/vt-d: Only call dmar_acpi_dev_scope_init() if DRHD units present
  iommu/vt-d: Check for NULL pointer in dmar_acpi_dev_scope_init()
  iommu/amd: Fix logic to determine and checking max PASID
  iommu/vt-d: Include ACPI devices in iommu=pt
  iommu/vt-d: Finally enable translation for non-PCI devices
  iommu/vt-d: Remove to_pci_dev() in intel_map_page()
  iommu/vt-d: Remove pdev from intel_iommu_attach_device()
  iommu/vt-d: Remove pdev from iommu_no_mapping()
  iommu/vt-d: Make domain_add_dev_info() take struct device
  iommu/vt-d: Make domain_remove_one_dev_info() take struct device
  iommu/vt-d: Rename 'hwdev' variables to 'dev' now that that's the norm
  iommu/vt-d: Remove some pointless to_pci_dev() calls
  iommu/vt-d: Make get_valid_domain_for_dev() take struct device
  iommu/vt-d: Make iommu_should_identity_map() take struct device
  iommu/vt-d: Handle RMRRs for non-PCI devices
  iommu/vt-d: Make get_domain_for_dev() take struct device
  iommu/vt-d: Make domain_context_mapp{ed,ing}() take struct device
  iommu/vt-d: Make device_to_iommu() cope with non-PCI devices
  ...
2014-04-05 18:46:26 -07:00
Linus Torvalds
70f6c08757 More ACPI and power management updates for 3.15-rc1
- Remaining changes from upstream ACPICA release 20140214 that introduce
    code to automatically serialize the execution of methods creating any
    named objects which really cannot be executed in parallel with each
    other anyway (previously ACPICA attempted to address that by aborting
    methods upon conflict detection, but that wasn't reliable enough and
    led to other issues).  From Bob Moore and Lv Zheng.
 
  - intel_pstate fix to use del_timer_sync() instead of del_timer() in
    the exit path before freeing the timer structure from Dirk Brandewie
    (original patch from Thomas Gleixner).
 
  - cpufreq fix related to system resume from Viresh Kumar.
 
  - Serialization of frequency transitions in cpufreq that involve
    PRECHANGE and POSTCHANGE notifications to avoid ordering issues
    resulting from race conditions.  From Srivatsa S Bhat and Viresh Kumar.
 
  - Revert of an ACPI processor driver change that was based on a specific
    interpretation of the ACPI spec which may not be correct (the relevant
    part of the spec appears to be incomplete).  From Hanjun Guo.
 
  - Runtime PM core cleanups and documentation updates from Geert Uytterhoeven.
 
  - PNP core cleanup from Michael Opdenacker.
 
 /
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Merge tag 'pm+acpi-3.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI and power management updates from Rafael Wysocki:
 "These are commits that were not quite ready when I sent the original
  pull request for 3.15-rc1 several days ago, but they have spent some
  time in linux-next since then and appear to be good to go.  All of
  them are fixes and cleanups.

  Specifics:

   - Remaining changes from upstream ACPICA release 20140214 that
     introduce code to automatically serialize the execution of methods
     creating any named objects which really cannot be executed in
     parallel with each other anyway (previously ACPICA attempted to
     address that by aborting methods upon conflict detection, but that
     wasn't reliable enough and led to other issues).  From Bob Moore
     and Lv Zheng.

   - intel_pstate fix to use del_timer_sync() instead of del_timer() in
     the exit path before freeing the timer structure from Dirk
     Brandewie (original patch from Thomas Gleixner).

   - cpufreq fix related to system resume from Viresh Kumar.

   - Serialization of frequency transitions in cpufreq that involve
     PRECHANGE and POSTCHANGE notifications to avoid ordering issues
     resulting from race conditions.  From Srivatsa S Bhat and Viresh
     Kumar.

   - Revert of an ACPI processor driver change that was based on a
     specific interpretation of the ACPI spec which may not be correct
     (the relevant part of the spec appears to be incomplete).  From
     Hanjun Guo.

   - Runtime PM core cleanups and documentation updates from Geert
     Uytterhoeven.

   - PNP core cleanup from Michael Opdenacker"

* tag 'pm+acpi-3.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: Make cpufreq_notify_transition & cpufreq_notify_post_transition static
  cpufreq: Convert existing drivers to use cpufreq_freq_transition_{begin|end}
  cpufreq: Make sure frequency transitions are serialized
  intel_pstate: Use del_timer_sync in intel_pstate_cpu_stop
  cpufreq: resume drivers before enabling governors
  PM / Runtime: Spelling s/competing/completing/
  PM / Runtime: s/foo_process_requests/foo_process_next_request/
  PM / Runtime: GENERIC_SUBSYS_PM_OPS is gone
  PM / Runtime: Correct documented return values for generic PM callbacks
  PM / Runtime: Split line longer than 80 characters
  PM / Runtime: dev_pm_info.runtime_error is signed
  Revert "ACPI / processor: Make it possible to get APIC ID via GIC"
  ACPICA: Enable auto-serialization as a default kernel behavior.
  ACPICA: Ignore sync_level for methods that have been auto-serialized.
  ACPICA: Add additional named objects for the auto-serialize method scan.
  ACPICA: Add auto-serialization support for ill-behaved control methods.
  ACPICA: Remove global option to serialize all control methods.
  PNP: remove deprecated IRQF_DISABLED
2014-04-02 14:10:21 -07:00
Linus Torvalds
4b1779c2cf PCI changes for the v3.15 merge window:
Enumeration
     - Increment max correctly in pci_scan_bridge() (Andreas Noever)
     - Clarify the "scan anyway" comment in pci_scan_bridge() (Andreas Noever)
     - Assign CardBus bus number only during the second pass (Andreas Noever)
     - Use request_resource_conflict() instead of insert_ for bus numbers (Andreas Noever)
     - Make sure bus number resources stay within their parents bounds (Andreas Noever)
     - Remove pci_fixup_parent_subordinate_busnr() (Andreas Noever)
     - Check for child busses which use more bus numbers than allocated (Andreas Noever)
     - Don't scan random busses in pci_scan_bridge() (Andreas Noever)
     - x86: Drop pcibios_scan_root() check for bus already scanned (Bjorn Helgaas)
     - x86: Use pcibios_scan_root() instead of pci_scan_bus_with_sysdata() (Bjorn Helgaas)
     - x86: Use pcibios_scan_root() instead of pci_scan_bus_on_node() (Bjorn Helgaas)
     - x86: Merge pci_scan_bus_on_node() into pcibios_scan_root() (Bjorn Helgaas)
     - x86: Drop return value of pcibios_scan_root() (Bjorn Helgaas)
 
   NUMA
     - x86: Add x86_pci_root_bus_node() to look up NUMA node from PCI bus (Bjorn Helgaas)
     - x86: Use x86_pci_root_bus_node() instead of get_mp_bus_to_node() (Bjorn Helgaas)
     - x86: Remove mp_bus_to_node[], set_mp_bus_to_node(), get_mp_bus_to_node() (Bjorn Helgaas)
     - x86: Use NUMA_NO_NODE, not -1, for unknown node (Bjorn Helgaas)
     - x86: Remove acpi_get_pxm() usage (Bjorn Helgaas)
     - ia64: Use NUMA_NO_NODE, not MAX_NUMNODES, for unknown node (Bjorn Helgaas)
     - ia64: Remove acpi_get_pxm() usage (Bjorn Helgaas)
     - ACPI: Fix acpi_get_node() prototype (Bjorn Helgaas)
 
   Resource management
     - i2o: Fix and refactor PCI space allocation (Bjorn Helgaas)
     - Add resource_contains() (Bjorn Helgaas)
     - Add %pR support for IORESOURCE_UNSET (Bjorn Helgaas)
     - Mark resources as IORESOURCE_UNSET if we can't assign them (Bjorn Helgaas)
     - Don't clear IORESOURCE_UNSET when updating BAR (Bjorn Helgaas)
     - Check IORESOURCE_UNSET before updating BAR (Bjorn Helgaas)
     - Don't try to claim IORESOURCE_UNSET resources (Bjorn Helgaas)
     - Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit (Bjorn Helgaas)
     - Don't enable decoding if BAR hasn't been assigned an address (Bjorn Helgaas)
     - Add "weak" generic pcibios_enable_device() implementation (Bjorn Helgaas)
     - alpha, microblaze, sh, sparc, tile: Use default pcibios_enable_device() (Bjorn Helgaas)
     - s390: Use generic pci_enable_resources() (Bjorn Helgaas)
     - Don't check resource_size() in pci_bus_alloc_resource() (Bjorn Helgaas)
     - Set type in __request_region() (Bjorn Helgaas)
     - Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region() (Bjorn Helgaas)
     - Change pci_bus_alloc_resource() type_mask to unsigned long (Bjorn Helgaas)
     - Log IDE resource quirk in dmesg (Bjorn Helgaas)
     - Revert "[PATCH] Insert GART region into resource map" (Bjorn Helgaas)
 
   PCI device hotplug
     - Make check_link_active() non-static (Rajat Jain)
     - Use link change notifications for hot-plug and removal (Rajat Jain)
     - Enable link state change notifications (Rajat Jain)
     - Don't disable the link permanently during removal (Rajat Jain)
     - Don't check adapter or latch status while disabling (Rajat Jain)
     - Disable link notification across slot reset (Rajat Jain)
     - Ensure very fast hotplug events are also processed (Rajat Jain)
     - Add hotplug_lock to serialize hotplug events (Rajat Jain)
     - Remove a non-existent card, regardless of "surprise" capability (Rajat Jain)
     - Don't turn slot off when hot-added device already exists (Yijing Wang)
 
   MSI
     - Keep pci_enable_msi() documentation (Alexander Gordeev)
     - ahci: Fix broken single MSI fallback (Alexander Gordeev)
     - ahci, vfio: Use pci_enable_msi_range() (Alexander Gordeev)
     - Check kmalloc() return value, fix leak of name (Greg Kroah-Hartman)
     - Fix leak of msi_attrs (Greg Kroah-Hartman)
     - Fix pci_msix_vec_count() htmldocs failure (Masanari Iida)
 
   Virtualization
     - Device-specific ACS support (Alex Williamson)
 
   Freescale i.MX6
     - Wait for retraining (Marek Vasut)
 
   Marvell MVEBU
     - Use Device ID and revision from underlying endpoint (Andrew Lunn)
     - Fix incorrect size for PCI aperture resources (Jason Gunthorpe)
     - Call request_resource() on the apertures (Jason Gunthorpe)
     - Fix potential issue in range parsing (Jean-Jacques Hiblot)
 
   Renesas R-Car
     - Check platform_get_irq() return code (Ben Dooks)
     - Add error interrupt handling (Ben Dooks)
     - Fix bridge logic configuration accesses (Ben Dooks)
     - Register each instance independently (Magnus Damm)
     - Break out window size handling (Magnus Damm)
     - Make the Kconfig dependencies more generic (Magnus Damm)
 
   Synopsys DesignWare
     - Fix RC BAR to be single 64-bit non-prefetchable memory (Mohit Kumar)
 
   Miscellaneous
     - Remove unused SR-IOV VF Migration support (Bjorn Helgaas)
     - Enable INTx if BIOS left them disabled (Bjorn Helgaas)
     - Fix hex vs decimal typo in cpqhpc_probe() (Dan Carpenter)
     - Clean up par-arch object file list (Liviu Dudau)
     - Set IORESOURCE_ROM_SHADOW only for the default VGA device (Sander Eikelenboom)
     - ACPI, ARM, drm, powerpc, pcmcia, PCI: Use list_for_each_entry() for bus traversal (Yijing Wang)
     - Fix pci_bus_b() build failure (Paul Gortmaker)
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Merge tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Enumeration
   - Increment max correctly in pci_scan_bridge() (Andreas Noever)
   - Clarify the "scan anyway" comment in pci_scan_bridge() (Andreas Noever)
   - Assign CardBus bus number only during the second pass (Andreas Noever)
   - Use request_resource_conflict() instead of insert_ for bus numbers (Andreas Noever)
   - Make sure bus number resources stay within their parents bounds (Andreas Noever)
   - Remove pci_fixup_parent_subordinate_busnr() (Andreas Noever)
   - Check for child busses which use more bus numbers than allocated (Andreas Noever)
   - Don't scan random busses in pci_scan_bridge() (Andreas Noever)
   - x86: Drop pcibios_scan_root() check for bus already scanned (Bjorn Helgaas)
   - x86: Use pcibios_scan_root() instead of pci_scan_bus_with_sysdata() (Bjorn Helgaas)
   - x86: Use pcibios_scan_root() instead of pci_scan_bus_on_node() (Bjorn Helgaas)
   - x86: Merge pci_scan_bus_on_node() into pcibios_scan_root() (Bjorn Helgaas)
   - x86: Drop return value of pcibios_scan_root() (Bjorn Helgaas)

  NUMA
   - x86: Add x86_pci_root_bus_node() to look up NUMA node from PCI bus (Bjorn Helgaas)
   - x86: Use x86_pci_root_bus_node() instead of get_mp_bus_to_node() (Bjorn Helgaas)
   - x86: Remove mp_bus_to_node[], set_mp_bus_to_node(), get_mp_bus_to_node() (Bjorn Helgaas)
   - x86: Use NUMA_NO_NODE, not -1, for unknown node (Bjorn Helgaas)
   - x86: Remove acpi_get_pxm() usage (Bjorn Helgaas)
   - ia64: Use NUMA_NO_NODE, not MAX_NUMNODES, for unknown node (Bjorn Helgaas)
   - ia64: Remove acpi_get_pxm() usage (Bjorn Helgaas)
   - ACPI: Fix acpi_get_node() prototype (Bjorn Helgaas)

  Resource management
   - i2o: Fix and refactor PCI space allocation (Bjorn Helgaas)
   - Add resource_contains() (Bjorn Helgaas)
   - Add %pR support for IORESOURCE_UNSET (Bjorn Helgaas)
   - Mark resources as IORESOURCE_UNSET if we can't assign them (Bjorn Helgaas)
   - Don't clear IORESOURCE_UNSET when updating BAR (Bjorn Helgaas)
   - Check IORESOURCE_UNSET before updating BAR (Bjorn Helgaas)
   - Don't try to claim IORESOURCE_UNSET resources (Bjorn Helgaas)
   - Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit (Bjorn Helgaas)
   - Don't enable decoding if BAR hasn't been assigned an address (Bjorn Helgaas)
   - Add "weak" generic pcibios_enable_device() implementation (Bjorn Helgaas)
   - alpha, microblaze, sh, sparc, tile: Use default pcibios_enable_device() (Bjorn Helgaas)
   - s390: Use generic pci_enable_resources() (Bjorn Helgaas)
   - Don't check resource_size() in pci_bus_alloc_resource() (Bjorn Helgaas)
   - Set type in __request_region() (Bjorn Helgaas)
   - Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region() (Bjorn Helgaas)
   - Change pci_bus_alloc_resource() type_mask to unsigned long (Bjorn Helgaas)
   - Log IDE resource quirk in dmesg (Bjorn Helgaas)
   - Revert "[PATCH] Insert GART region into resource map" (Bjorn Helgaas)

  PCI device hotplug
   - Make check_link_active() non-static (Rajat Jain)
   - Use link change notifications for hot-plug and removal (Rajat Jain)
   - Enable link state change notifications (Rajat Jain)
   - Don't disable the link permanently during removal (Rajat Jain)
   - Don't check adapter or latch status while disabling (Rajat Jain)
   - Disable link notification across slot reset (Rajat Jain)
   - Ensure very fast hotplug events are also processed (Rajat Jain)
   - Add hotplug_lock to serialize hotplug events (Rajat Jain)
   - Remove a non-existent card, regardless of "surprise" capability (Rajat Jain)
   - Don't turn slot off when hot-added device already exists (Yijing Wang)

  MSI
   - Keep pci_enable_msi() documentation (Alexander Gordeev)
   - ahci: Fix broken single MSI fallback (Alexander Gordeev)
   - ahci, vfio: Use pci_enable_msi_range() (Alexander Gordeev)
   - Check kmalloc() return value, fix leak of name (Greg Kroah-Hartman)
   - Fix leak of msi_attrs (Greg Kroah-Hartman)
   - Fix pci_msix_vec_count() htmldocs failure (Masanari Iida)

  Virtualization
   - Device-specific ACS support (Alex Williamson)

  Freescale i.MX6
   - Wait for retraining (Marek Vasut)

  Marvell MVEBU
   - Use Device ID and revision from underlying endpoint (Andrew Lunn)
   - Fix incorrect size for PCI aperture resources (Jason Gunthorpe)
   - Call request_resource() on the apertures (Jason Gunthorpe)
   - Fix potential issue in range parsing (Jean-Jacques Hiblot)

  Renesas R-Car
   - Check platform_get_irq() return code (Ben Dooks)
   - Add error interrupt handling (Ben Dooks)
   - Fix bridge logic configuration accesses (Ben Dooks)
   - Register each instance independently (Magnus Damm)
   - Break out window size handling (Magnus Damm)
   - Make the Kconfig dependencies more generic (Magnus Damm)

  Synopsys DesignWare
   - Fix RC BAR to be single 64-bit non-prefetchable memory (Mohit Kumar)

  Miscellaneous
   - Remove unused SR-IOV VF Migration support (Bjorn Helgaas)
   - Enable INTx if BIOS left them disabled (Bjorn Helgaas)
   - Fix hex vs decimal typo in cpqhpc_probe() (Dan Carpenter)
   - Clean up par-arch object file list (Liviu Dudau)
   - Set IORESOURCE_ROM_SHADOW only for the default VGA device (Sander Eikelenboom)
   - ACPI, ARM, drm, powerpc, pcmcia, PCI: Use list_for_each_entry() for bus traversal (Yijing Wang)
   - Fix pci_bus_b() build failure (Paul Gortmaker)"

* tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (108 commits)
  Revert "[PATCH] Insert GART region into resource map"
  PCI: Log IDE resource quirk in dmesg
  PCI: Change pci_bus_alloc_resource() type_mask to unsigned long
  PCI: Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region()
  resources: Set type in __request_region()
  PCI: Don't check resource_size() in pci_bus_alloc_resource()
  s390/PCI: Use generic pci_enable_resources()
  tile PCI RC: Use default pcibios_enable_device()
  sparc/PCI: Use default pcibios_enable_device() (Leon only)
  sh/PCI: Use default pcibios_enable_device()
  microblaze/PCI: Use default pcibios_enable_device()
  alpha/PCI: Use default pcibios_enable_device()
  PCI: Add "weak" generic pcibios_enable_device() implementation
  PCI: Don't enable decoding if BAR hasn't been assigned an address
  PCI: Enable INTx in pci_reenable_device() only when MSI/MSI-X not enabled
  PCI: Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit
  PCI: Don't try to claim IORESOURCE_UNSET resources
  PCI: Check IORESOURCE_UNSET before updating BAR
  PCI: Don't clear IORESOURCE_UNSET when updating BAR
  PCI: Mark resources as IORESOURCE_UNSET if we can't assign them
  ...

Conflicts:
	arch/x86/include/asm/topology.h
	drivers/ata/ahci.c
2014-04-01 15:14:04 -07:00
Rafael J. Wysocki
08476907ab Merge branch 'acpica'
* acpica:
  ACPICA: Enable auto-serialization as a default kernel behavior.
  ACPICA: Ignore sync_level for methods that have been auto-serialized.
  ACPICA: Add additional named objects for the auto-serialize method scan.
  ACPICA: Add auto-serialization support for ill-behaved control methods.
  ACPICA: Remove global option to serialize all control methods.
2014-04-01 22:09:26 +02:00
Bob Moore
22b5afce6a ACPICA: Add auto-serialization support for ill-behaved control methods.
This change adds support to automatically mark a control method as
"serialized" if the method creates any named objects. This will
positively prevent the method from being entered by more than one
thread and thus preventing a possible abort when an attempt is
made to create an object twice.

Implemented by parsing all non-serialize control methods at table
load time.

This feature is disabled by default and this patch also adds a new
Linux kernel parameter "acpi_auto_serialize" to allow this feature
to be turned on for a specific boot.

References: https://bugzilla.kernel.org/show_bug.cgi?id=52191
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-26 16:25:59 +01:00
Lv Zheng
e2b8ddcc6b ACPICA: Remove global option to serialize all control methods.
According to the reports, the "acpi_serialize" mechanism is broken as:

 A. The parallel method calls can still happen when the interpreter lock is
    released under the following conditions:
    1. External callbacks are invoked, for example, by the region handlers,
       the exception handlers, etc.;
    2. Module level execution is performed when Load/LoadTable opcodes are
       executed, and
    3. The _REG control methods are invoked to complete the region
       registrations.
 B. For the following situations, the interpreter lock need to be released
    even for a serialized method while currently, the lock-releasing
    operation is marked as a no-op by
    acpi_ex_relinquish/reacquire_interpreter() when this mechanism is
    enabled:
    1. Wait opcode is executed,
    2. Acquire opcode is executed, and
    3. Sleep opcode is executed.

This patch removes this mechanism and the internal
acpi_ex_relinquish/reacquire_interpreter() APIs.  Lv Zheng.

References: https://bugzilla.kernel.org/show_bug.cgi?id=52191
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-26 16:25:59 +01:00
David Woodhouse
86a54dcce6 iommu/vt-d: Add ACPI namespace device reporting structures
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-20 14:25:06 +00:00
Rafael J. Wysocki
165f5fd04a Merge branches 'pm-qos', 'pm-domains' and 'pm-drivers'
* pm-qos:
  PM / QoS: Add type to dev_pm_qos_add_ancestor_request() arguments
  ACPI / LPSS: Support for device latency tolerance PM QoS
  ACPI / scan: Add bind/unbind callbacks to struct acpi_scan_handler
  PM / QoS: Introcuce latency tolerance device PM QoS type
  PM / QoS: Add no_constraints_value field to struct pm_qos_constraints
  PM / QoS: Rename device resume latency QoS items

* pm-domains:
  PM / domains: Turn latency warning into debug message

* pm-drivers:
  PM: Add pm_runtime_suspend|resume_force functions
  PM / runtime: Fetch runtime PM callbacks using a macro
2014-03-20 13:25:36 +01:00
Rafael J. Wysocki
6ac4a2ab16 Merge branch 'acpica'
* acpica: (29 commits)
  ACPICA: Revert "Headers: Deploy #pragma pack (push) and (pop)."
  ACPICA: Update version to 20140214.
  ACPICA: Prevent infinite loops when traversing corrupted lists.
  ACPICA: Debugger: Add missing objects; Traverse linked lists
  ACPICA: Add text: ACPICA policy for new _OSI strings. No functional change.
  ACPICA: Update for _PRP predefined name.
  ACPICA: Cleanup/improve global variable declarations.
  ACPICA: Comment update - no functional change.
  ACPICA: Do not abort _PRT repair on a single subpackage failure.
  ACPICA: Harden _PRT repair code; check for minimum package length.
  ACPICA: Restore code that repairs NULL package elements in return values.
  ACPICA: Properly handle NULL entries in _PRT return packages.
  ACPICA: Update conditional compilation flags for resource dump functions.
  ACPICA: Predefined names: Add support for the _PRP method.
  ACPICA: Headers: Deploy #pragma pack (push) and (pop).
  ACPICA: Add boot option to disable auto return object repair
  ACPICA: acpidump: Remove integer types translation protection.
  ACPICA: acpidump: Add sparse declarators support.
  ACPICA: Add "Windows 2013" string to _OSI support.
  ACPICA: Update version to 20140114.
  ...
2014-03-20 13:25:02 +01:00
Robert Moore
6e59608483 ACPICA: Revert "Headers: Deploy #pragma pack (push) and (pop)."
This reverts commit aae576e5faefa8ba70647efa320d4747b6375f1e.
Push and Pop are not portable "enough", and caused problems for
some ACPICA customers.

Signed-off-by: Robert Moore <Robert.Moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-18 01:53:45 +01:00
Rafael J. Wysocki
bcef50814c Merge branch 'acpi-config' into acpica
Conflicts:
	include/acpi/platform/aclinux.h
2014-03-18 01:53:28 +01:00
Bob Moore
d2716578e4 ACPICA: Update version to 20140214.
Version 20140214.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-18 01:52:18 +01:00
Rafael J. Wysocki
2eb060975d Merge branch 'acpi-ost'
* acpi-ost:
  ACPI: Drop acpi_evaluate_hotplug_ost() and ACPI_HOTPLUG_OST
  ACPI: use device name LNXSYBUS.xx for ACPI \_SB and \_TZ objects
  ACPI / processor: use acpi_evaluate_ost() to replace open-coded version
  ACPI / PAD / xen: use acpi_evaluate_ost() to replace open-coded version
  ACPI / PAD: use acpi_evaluate_ost() to replace open-coded version
  ACPI: rename acpi_evaluate_hotplug_ost() to acpi_evaluate_ost()
2014-03-17 13:48:18 +01:00
Rafael J. Wysocki
75c44eddcb Merge branch 'acpi-config'
* acpi-config:
  ACPI: Remove Kconfig symbol ACPI_PROCFS
  ACPI / APEI: Remove X86 redundant dependency for APEI GHES.
  ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE_ONLY
2014-03-17 13:47:24 +01:00
Rafael J. Wysocki
1e3bcb596c ACPI / hotplug: Rework deferred execution of acpi_device_hotplug()
Since the only function executed by acpi_hotplug_execute() is
acpi_device_hotplug() and it only is called by the ACPI core,
simplify its definition so that it only takes two arguments, the
ACPI device object pointer and event code, rename it to
acpi_hotplug_schedule() and move its header from acpi_bus.h to
the ACPI core's internal header file internal.h.  Modify the
definition of acpi_device_hotplug() so that its first argument is
an ACPI device object pointer and modify the definition of
struct acpi_hp_work accordingly.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
2014-03-05 01:26:35 +01:00
Bob Moore
4ac4c5fad8 ACPICA: Headers: Deploy #pragma pack (push) and (pop).
Use push and pop to both guarantee that the correct alignment is used,
and to restore the alignment to whatever it was before the header
was included.

It is reported that the #pragma pack(push/pop) directives are not supported
by the specific GCCs, but this patch still doesn't affect kernel build
as there are already #pragma pack([1]) directives used in the old ACPICA
headers, which means there shouldn't be GCCs that are currently used to
compile the ACPI kernels do not support #pragma pack() directives.

References: https://bugs.acpica.org/show_bug.cgi?id=1058
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-27 00:45:59 +01:00
Rafael J. Wysocki
700b8422fb ACPI: Drop acpi_evaluate_hotplug_ost() and ACPI_HOTPLUG_OST
Replace acpi_evaluate_hotplug_ost() with acpi_evaluate_ost()
everywhere and drop the ACPI_HOTPLUG_OST symbol so that hotplug
_OST is supported unconditionally.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
2014-02-22 00:50:49 +01:00
Rafael J. Wysocki
2f16817d87 ACPI / dock: Drop struct acpi_dock_ops and all code related to it
Since struct acpi_dock_ops and the code handling it don't have any
users any more after the previous changes, drop that structure and
the code related to it altogether.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-22 00:48:56 +01:00
Rafael J. Wysocki
5d5132059a ACPI / ATA: Add hotplug contexts to ACPI companions of SATA devices
Modify the SATA subsystem to add hotplug contexts to ACPI companions
of SATA devices and ports instead of registering special ACPI dock
operations using register_hotplug_dock_device().

That change will allow the entire code handling those special ACPI
dock operations to be dropped in the next commit.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
2014-02-22 00:48:31 +01:00
Rafael J. Wysocki
be27b3dcb0 ACPI / dock: Add .uevent() callback to struct acpi_hotplug_context
In order to avoid the need to register special ACPI dock
operations for SATA devices add a .uevent() callback pointer to
struct acpi_hotplug_context and make dock_hotplug_event() use that
callback if available.  Also rename the existing .event() callback
in struct acpi_hotplug_context to .notify() to avoid possible
confusion in the future.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-21 01:10:27 +01:00
Rafael J. Wysocki
3b52b21fa1 ACPI / dock: Use ACPI device object pointers instead of ACPI handles
Rework the ACPI dock station driver to store ACPI device object
pointers instead of ACPI handles in its internal data structures.

The purpose is moslty to make subsequent simplifications possible,
but also this allows the overall code size to be reduced slightly.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-21 01:10:09 +01:00
Rafael J. Wysocki
59b42fa01f ACPI / hotplug: Add .fixup() callback to struct acpi_hotplug_context
In order for the ACPI dock station code to be able to use the
callbacks pointed to by the ACPI device objects' hotplug contexts
add a .fixup() callback pointer to struct acpi_hotplug_context.
That callback will be useful to handle PCI devices located in
dock stations.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-21 01:08:51 +01:00
Rafael J. Wysocki
2bd74d91b1 Merge branch 'acpi-pci-hotplug' into acpi-ost 2014-02-21 01:06:58 +01:00
Jiang Liu
05730c1952 ACPI: rename acpi_evaluate_hotplug_ost() to acpi_evaluate_ost()
Rename acpi_evaluate_hotplug_ost() to acpi_evaluate_ost() for later
resue.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-21 00:27:46 +01:00
Rafael J. Wysocki
1e2380cd14 ACPI / dock: Dispatch dock notifications from the global notify handler
The ACPI dock station code carries out an extra namespace scan
before the main one in order to find and register all of the dock
device objects.  Then, it registers a notify handler for each of
them for handling dock events.

However, dock device objects need not be scanned for upfront.  They
very well can be enumerated and registered during the first phase
of the main namespace scan, before attaching scan handlers and ACPI
drivers to ACPI device objects.  Then, the dependent devices can be
added to the in the second phase.  That makes it possible to drop
the extra namespace scan, so do it.

Moreover, it is not necessary to register notify handlers for all
of the dock stations' namespace nodes, becuase notifications may
be dispatched from the global notify handler for them.  Do that and
drop two functions used for dock notify handling, acpi_dock_deferred_cb()
and dock_notify_handler(), that aren't necessary any more.

Finally, some dock station objects have _HID objects matching the
ACPI container scan handler which causes it to claim those objects
and try to handle their hotplug, but that is not a good idea,
because those objects have their own special hotplug handling anyway.
For this reason, the hotplug_notify flag should not be set for ACPI
device objects representing dock stations and the container scan
handler should be made ignore those objects, so make that happen.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-16 01:51:01 +01:00
Lv Zheng
e252652fb2 ACPICA: acpidump: Remove integer types translation protection.
Remove translation protection for applications as Linux tools folder will
start to use such types.

In Linux kernel source tree, after removing this translation protection,
the u8/u16/u32/u64/s32/s64 typedefs are exposed for both __KERNEL__ builds
and !__KERNEL__ builds (tools/power/acpi) and the original definitions of
ACPI_UINT8/16/32/64_MAX are changed.

For !__KERNEL__ builds, this kind of defintions should already been tested
by the distribution vendors that are distributing binary ACPICA package and
we've achieved the successful built/run test result in the kernel source
tree.

For __KERNEL__ builds, there are 2 things affected:
1. u8/u16/u32/u64/s32/s64 type definitions:
   Since Linux has already type defined u8/u16/u32/u64/s32/s64 in
   include/uapi/asm-generic/int-ll64.h for __KERNEL__.  In order not to
   introduce build regressions where the 2 typedefs are differed,
   ACPI_USE_SYSTEM_INTTYPES is introduced to mask out ACPICA's typedefs.
   It must be defined for Linux __KERNEL__ builds.
2. ACPI_UINT8/16/32/64_MAX definitions:
   Before applying this change:
     ACPI_UINT8_MAX: sizeof (UINT8)
      UINT8: unsigned char
     ACPI_UINT16_MAX: sizeof (UINT16)
      UINT16: unsigned short
     ACPI_UINT32_MAX: sizeof (UINT32)
      INT32: int
      UINT32: unsigned int
     ACPI_UINT64_MAX: sizeof (UINT64)
      INT64: COMPILER_DEPENDENT_INT64
       COMPILER_DEPENDENT_INT64: signed long (IA64) or
                                 signed long long (IA32)
      UINT64: COMPILER_DEPENDENT_UINT64
       COMPILER_DEPENDENT_UINT64: unsigned long (IA64) or
                                  unsigned long long (IA32)
   After applying this change:
     ACPI_UINT8_MAX: sizeof (u8)
      u8: unsigned char
      UINT8: (removed from actypes.h)
     ACPI_UINT16_MAX: sizeof (u16)
      u16: unsigned short
      UINT16: (removed from actypes.h)
     ACPI_UINT32_MAX: sizeof (u32)
      INT32/UINT32: (removed from actypes.h)
      s32: signed int
      u32: unsigned int
     ACPI_UINT64_MAX: sizeof (u64)
      INT64/UINT64: (removed from actypes.h)
      u64: unsigned long long
      s64: signed long long
      COMPILER_DEPENDENT_INT64: signed long (IA64) (not used any more)
                                signed long long (IA32) (not used any more)
      COMPILER_DEPENDENT_UINT64: unsigned long (IA64) (not used any more)
                                 unsigned long long (IA32) (not used any more)
   All definitions are equal except ACPI_UINT64_MAX for CONFIG_IA64.  It
   is changed from sizeof(unsigned long) to sizeof(unsigned long long).
   By investigation, 64bit Linux kernel build is LP64 compliant, i.e.,
   sizeof(long) and (pointer) are 64.  As sizeof(unsigned long) equals to
   sizeof(unsigned long long) on IA64 platform where CONFIG_64BIT cannot be
   disabled, this change actually will not affect the value of
   ACPI_UINT64_MAX on IA64 platforms.

This patch is necessary for the ACPICA's acpidump tool to build
correctly.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-13 16:21:15 +01:00
Lv Zheng
7e66b46b24 ACPICA: acpidump: Add sparse declarators support.
Linux kernel resident ACPICA headers include some sparse declarators for
kernel static checkers.  This patch adds code to disable them for non
__KERNEL__ defined code so that it is possible for the ACPICA user space
tool's source files to be built with Linux kernel ACPICA header files
included.  Lv Zheng.

Linux kernel build is not affected by this commit.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-13 15:29:38 +01:00
Rafael J. Wysocki
9cb32acf09 ACPI / scan: Add bind/unbind callbacks to struct acpi_scan_handler
In some cases it may be necessary to perform certain setup/cleanup
operations on a device object representing a physical device after
it has been associated with an ACPI companion by acpi_bind_one() or
before disassociating it from that companion by acpi_unbind_one(),
respectively.  If there is a struct acpi_bus_type object for the
given device's bus type, the .setup()/.cleanup() callbacks from there
are executed for these purposes.  However, an analogous mechanism will
be necessary for devices whose bus types don't have corresponding
struct acpi_bus_type objects and that have specific ACPI scan handlers.

For those devices, add new .bind() and .unbind() callbacks to struct
acpi_scan_handler that will be executed by acpi_platform_notify()
right after the given device has been associated with an ACPI
comapnion and by acpi_platform_notify_remove() right before calling
acpi_unbind_one() for that device, respectively.

To make that work for scan handlers registering new devices in their
.attach() callbacks, modify acpi_scan_attach_handler() to set the
ACPI device object's handler field before calling .attach() from the
scan handler at hand.

This changeset includes a fix from Mika Westerberg.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-11 00:35:46 +01:00
Bob Moore
2447a5a8ea ACPICA: Update version to 20140114.
Version 20140114.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-11 00:30:25 +01:00
Lv Zheng
9036f600fb ACPICA: Add support for extra, optional OS-specific header file.
If OSPMs have something should appear after actypes.h to reference type
definitions, the platform/acxxx.h is not sufficient as it is included by
platform/acenv.h before including actypes.h.

This patch introduces an OSPMs declarable headers to allow OSPMs to handle
such requirement for their own purposes.

This kind of header can also be used by Linux to collect the divergences
that haven't been back ported yet.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-11 00:30:25 +01:00
Bob Moore
fbb7a2dc2b ACPICA: Update ACPICA copyrights to 2014.
Update ACPICA copyrights to 2014. Includes all source headers and
signons for the various tools.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-11 00:30:25 +01:00
Rafael J. Wysocki
1a699476e2 ACPI / hotplug / PCI: Hotplug notifications from acpi_bus_notify()
Since acpi_bus_notify() is executed on all notifications for all
devices anyway, make it execute acpi_device_hotplug() for all
hotplug events instead of installing notify handlers pointing to
the same function for all hotplug devices.

This change reduces both the size and complexity of ACPI-based device
hotplug code.  Moreover, since acpi_device_hotplug() only does
significant things for devices that have either an ACPI scan handler,
or a hotplug context with .eject() defined, and those devices
had notify handlers pointing to acpi_hotplug_notify_cb() installed
before anyway, this modification shouldn't change functionality.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-06 17:31:52 +01:00
Rafael J. Wysocki
5e6f236c26 ACPI / hotplug / PCI: Simplify acpi_install_hotplug_notify_handler()
Since acpi_hotplug_notify_cb() does not use its data argument any
more, the second argument of acpi_install_hotplug_notify_handler()
can be dropped, so do that and update its callers accordingly.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-06 17:31:51 +01:00
Rafael J. Wysocki
3c2cc7ff9e ACPI / hotplug / PCI: Consolidate ACPIPHP with ACPI core hotplug
The ACPI-based PCI hotplug (ACPIPHP) code currently attaches its
hotplug context objects directly to ACPI namespace nodes representing
hotplug devices.  However, after recent changes causing struct
acpi_device to be created for every namespace node representing a
device (regardless of its status), that is not necessary any more.
Moreover, it's vulnerable to the theoretical issue that the ACPI
handle passed in the context between handle_hotplug_event() and
hotplug_event_work() may become invalid in the meantime (as a
result of a concurrent table unload).

In principle, this issue might be addressed by adding a non-empty
release handler for ACPIPHP hotplug context objects analogous to
acpi_scan_drop_device(), but that would duplicate the code in that
function and in acpi_device_del_work_fn().  For this reason, it's
better to modify ACPIPHP to attach its device hotplug contexts to
struct device objects representing hotplug devices and make it
use acpi_hotplug_notify_cb() as its notify handler.  At the same
time, acpi_device_hotplug() can be modified to dispatch the new
.hp.event() callback pointing to acpiphp_hotplug_event() from ACPI
device objects associated with PCI devices or use the generic
ACPI device hotplug code for device objects with matching scan
handlers.

This allows the existing code duplication between ACPIPHP and the
ACPI core to be reduced too and makes further ACPI-based device
hotplug consolidation possible.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-06 17:31:37 +01:00
Rafael J. Wysocki
e525506fcb ACPI / hotplug / PCI: Define hotplug context lock in the core
Subsequent changes will require the ACPI core to acquire the lock
protecting the ACPIPHP hotplug contexts, so move the definition of
the lock to the core and change its name to be more generic.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2014-02-05 17:41:26 +01:00
Rafael J. Wysocki
78ea4639a7 ACPI / hotplug: Fix potential race in acpi_bus_notify()
There is a slight possibility for the ACPI device object pointed to
by adev in acpi_hotplug_notify_cb() to become invalid between the
acpi_bus_get_device() that it comes from and the subsequent dereference
of that pointer under get_device().  Namely, if acpi_scan_drop_device()
runs in parallel with acpi_hotplug_notify_cb(), acpi_device_del_work_fn()
queued up by it may delete the device object in question right after
a successful execution of acpi_bus_get_device() in acpi_bus_notify().

An analogous problem is present in acpi_bus_notify() where the device
pointer coming from acpi_bus_get_device() may become invalid before
it subsequent dereference in the "if" block.

To prevent that from happening, introduce a new function,
acpi_bus_get_acpi_device(), working analogously to acpi_bus_get_device()
except that it will grab a reference to the ACPI device object returned
by it and it will do that under the ACPICA's namespace mutex.  Then,
make both acpi_hotplug_notify_cb() and acpi_bus_notify() use
acpi_bus_get_acpi_device() instead of acpi_bus_get_device() so as to
ensure that the pointers used by them will not become stale at one
point.

In addition to that, introduce acpi_bus_put_acpi_device() as a wrapper
around put_device() to be used along with acpi_bus_get_acpi_device()
and make the (new) users of the latter use acpi_bus_put_acpi_device()
too.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2014-02-05 17:41:18 +01:00
Rafael J. Wysocki
7c2e17714e ACPICA: Introduce acpi_get_data_full() and rework acpi_get_data()
Introduce a new function, acpi_get_data_full(), working in analogy
with acpi_get_data() except that it can execute a callback provided
as its 4th argument right after acpi_ns_get_attached_data() has
returned a success.

That will allow Linux to reference count the object pointed to by
*data before the namespace mutex is released so as to ensure that it
will not be freed going forward until the reference to it acquired
by acpi_get_data_full() is dropped.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2014-02-05 17:41:16 +01:00
Al Stone
af1ae78abb ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE_ONLY
ACPI hardware reduced mode exists to allow newer platforms to use a
simpler form of ACPI that does not require supporting legacy versions
of the specification and their associated hardware.  This mode was
introduced in the ACPI 5.0 specification.

The ACPI hardware reduced mode is supposed to be used on systems
having the HW_REDUCED_ACPI flag set in the FADT.  ACPICA checks
that flag to determine whether or not it should work in the HW
reduced mode and there are pieces of code in it that will never
be used in that case.

Since some architecutres will always use the ACPI HW reduced mode,
it doesn't make sense for them to ever compile support for anything
else.  Thus, they should set the flag ACPI_REDUCED_HARDWARE to TRUE
in the ACPICA source.  To enable them to do that, introduce a new
kernel configuration option, CONFIG_ACPI_REDUCED_HARDWARE_ONLY, that
will cause the ACPICA's ACPI_REDUCED_HARDWARE flag to be TRUE when
set.

Introducing this configuration item is based on suggestions from Lv
Zheng saying that this does not belong in ACPICA, but rather to the
Linux kernel itself.

References: http://www.spinics.net/lists/linux-acpi/msg46369.html
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Al Stone <al.stone@linaro.org>
[rjw: Subject and changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-05 12:28:07 +01:00
Bjorn Helgaas
d79ed248d9 ACPI / numa: Make __acpi_map_pxm_to_node(), acpi_get_pxm() static
__acpi_map_pxm_to_node() and acpi_get_pxm() are only used within
drivers/acpi/numa.c.  This makes them static and removes their
declarations.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-03 10:39:38 -07:00
Rafael J. Wysocki
82e180598b Merge branches 'acpi-processor', 'acpi-hotplug', 'acpi-init', 'acpi-pm' and 'acpica'
* acpi-processor:
  ACPI / scan: reduce log level of "ACPI: \_PR_.CPU4: failed to get CPU APIC ID"
  ACPI / processor: Return specific error value when mapping lapic id

* acpi-hotplug:
  ACPI / scan: Clear match_driver flag in acpi_bus_trim()

* acpi-init:
  ACPI / init: Flag use of ACPI and ACPI idioms for power supplies to regulator API

* acpi-pm:
  ACPI / PM: Use ACPI_COMPANION() to get ACPI companions of devices

* acpica:
  ACPICA: Remove bool usage from ACPICA.
2014-01-29 11:47:18 +01:00
Lv Zheng
481c13814a ACPICA: Remove bool usage from ACPICA.
The use of "bool" is not safe for ACPICA code where it is originally using
a "BOOLEAN" defined as "unsigned char".

This patch removes the only "bool" usage from kernel source tree to reduce
the source code differences between Linux and ACPICA upstream.

This patch is required by future acpidump release automation.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-27 23:59:08 +01:00
Rafael J. Wysocki
fbb9c10d40 Merge branch 'acpi-dsm'
* acpi-dsm:
  ACPI / extlog: replace open-coded _DSM code with helper functions
  ACPI / nouveau: replace open-coded _DSM code with helper functions
  nouveau / ACPI: fix memory leak in ACPI _DSM related code
  ACPI / i915: replace open-coded _DSM code with helper functions
  ACPI / i2c-hid: replace open-coded _DSM code with helper functions
  ACPI / TPM: detect PPI features by checking availability of _DSM functions
  ACPI / TPM: replace open-coded _DSM code with helper functions
  ACPI / TPM: match node name instead of full path when searching for TPM device
  PCI / pci-label: treat PCI label with index 0 as valid label
  ACPI / PCI: replace open-coded _DSM code with helper functions
  PCI / pci-label: release allocated ACPI object on error recovery path
  ACPI: introduce helper interfaces for _DSM method
2014-01-12 23:45:52 +01:00
Rafael J. Wysocki
3e7cc142c1 Merge branch 'acpica'
* acpica: (21 commits)
  ACPICA: Update version to 20131218.
  ACPICA: Utilities: Cleanup declarations of the acpi_gbl_debug_file global.
  ACPICA: Linuxize: Cleanup spaces after special macro invocations.
  ACPICA: Interpreter: Add additional debug info for an error case.
  ACPICA: Update ACPI example code to make it an actual working program.
  ACPICA: Add an error message if the Debugger fails initialization.
  ACPICA: Conditionally define a local variable that is used for debug only.
  ACPICA: Parser: Updates/fixes for debug output.
  ACPICA: Enhance ACPI warning for memory/IO address conflicts.
  ACPICA: Update several debug statements - no functional change.
  ACPICA: Improve exception handling for GPE block installation.
  ACPICA: Add helper macros to extract bus/segment numbers from HEST table.
  ACPICA: Tables: Add full support for the PCCT table, update table definition.
  ACPICA: Tables: Add full support for the DBG2 table.
  ACPICA: Add option to favor 32-bit FADT addresses.
  ACPICA: Cleanup the option of forcing the use of the RSDT.
  ACPICA: Back port and refine validation of the XSDT root table.
  ACPICA: Linux Header: Remove unused OSL prototypes.
  ACPICA: Remove unused ACPI_FREE_BUFFER macro. No functional change.
  ACPICA: Disassembler: Improve pathname support for emitted External() statements.
  ...
2014-01-12 23:45:43 +01:00
Rafael J. Wysocki
25d412d932 Merge branch 'acpi-hotplug'
* acpi-hotplug:
  ACPI / scan: ACPI device object sysfs attribute for _STA evaluation
  ACPI / hotplug / driver core: Handle containers in a special way
  ACPI / hotplug: Add demand_offline hotplug profile flag
  ACPI / bind: Move acpi_get_child() to drivers/ide/ide-acpi.c
  ACPI / bind: Pass struct acpi_device pointer to acpi_bind_one()
  ACPI / bind: Rework struct acpi_bus_type
  ACPI / bind: Redefine acpi_preset_companion()
  ACPI / bind: Redefine acpi_get_child()
  PCI / ACPI: Use acpi_find_child_device() for child devices lookup
  ACPI / bind: Simplify child device lookups
  ACPI / scan: Use direct recurrence for device hierarchy walks
  ACPI: Introduce acpi_set_device_status()
  ACPI / hotplug: Drop unfinished global notification handling routines
  ACPI / hotplug: Rework generic code to handle suprise removals
  ACPI / hotplug: Move container-specific code out of the core
  ACPI / hotplug: Make ACPI PCI root hotplug use common hotplug code
  ACPI / hotplug: Introduce common hotplug function acpi_device_hotplug()
  ACPI / hotplug: Do not fail bus and device checks for disabled hotplug
  ACPI / scan: Add acpi_device objects for all device nodes in the namespace
  ACPI / scan: Define non-empty device removal handler
2014-01-12 23:45:04 +01:00
Rafael J. Wysocki
98feb7cc61 Merge branch 'acpi-cleanup'
* acpi-cleanup: (22 commits)
  ACPI / tables: Return proper error codes from acpi_table_parse() and fix comment.
  ACPI / tables: Check if id is NULL in acpi_table_parse()
  ACPI / proc: Include appropriate header file in proc.c
  ACPI / EC: Remove unused functions and add prototype declaration in internal.h
  ACPI / dock: Include appropriate header file in dock.c
  ACPI / PCI: Include appropriate header file in pci_link.c
  ACPI / PCI: Include appropriate header file in pci_slot.c
  ACPI / EC: Mark the function acpi_ec_add_debugfs() as static in ec_sys.c
  ACPI / NVS: Include appropriate header file in nvs.c
  ACPI / OSL: Mark the function acpi_table_checksum() as static
  ACPI / processor: initialize a variable to silence compiler warning
  ACPI / processor: use ACPI_COMPANION() to get ACPI device
  ACPI: correct minor typos
  ACPI / sleep: Drop redundant acpi_disabled check
  ACPI / dock: Drop redundant acpi_disabled check
  ACPI / table: Replace '1' with specific error return values
  ACPI: remove trailing whitespace
  ACPI / IBFT: Fix incorrect <acpi/acpi.h> inclusion in iSCSI boot firmware module
  ACPI / i915: Fix incorrect <acpi/acpi.h> inclusions via <linux/acpi_io.h>
  SFI / ACPI: Fix warnings reported during builds with W=1
  ...

Conflicts:
	drivers/acpi/nvs.c
	drivers/hwmon/asus_atk0110.c
2014-01-12 23:44:09 +01:00
Bob Moore
c14ced0464 ACPICA: Update version to 20131218.
Version 20131218.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:39 +01:00
Lv Zheng
71487f3ffd ACPICA: Utilities: Cleanup declarations of the acpi_gbl_debug_file global.
This global is acting as an OSL global variable, implemented in the
oswinxf.c and osunixxf.c.

This patch cleans up the definition of this variable so that new utilities
do not need to define it in order to link.

Linux kernel behaviour is not affected as the changes only applies to the
ACPICA userspace utilities which are not shipped in the kernel currently.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:39 +01:00
Lv Zheng
ed6069445d ACPICA: Linuxize: Cleanup spaces after special macro invocations.
This patch reflects the improvment of a cleanup step which is performed in
the release process.

There are still spaces in the "linuxized" ACPICA files after special macro
invocations.  This is because indent treats comments and pre-processor
directives as spaces, thus we need to skip them.

Before applying this patch, cleanup code will search from keyword back to
end of line and wipe spaces between them.

After applying this patch, cleanup code will search to the end of the macro
invocations, skip "empty lines", "comments" and "pre-processor directives",
then wipe the spaces between the new line and the first non-spaces
characters.

Following improvements are thus achieved in the release automation by this
commit which are originally maintained manually:
 - acpi_status acpi_ev_remove_global_lock_handler(void);
 +acpi_status acpi_ev_remove_global_lock_handler(void);
 - acpi_status
 +acpi_status
  acpi_ev_match_gpe_method(acpi_handle obj_handle,
 - acpi_status acpi_subsystem_status(void);
 +acpi_status acpi_subsystem_status(void);
 - acpi_status acpi_install_notify_handler(acpi_handle device, u32 handler_type,
 +acpi_status acpi_install_notify_handler(acpi_handle device, u32 handler_type,
 - acpi_status
 +acpi_status
  acpi_acquire_mutex(acpi_handle handle, acpi_string pathname, u16 timeout);
 - acpi_status
 +acpi_status
  acpi_get_sleep_type_data(u8 sleep_state, u8 *slp_typ_a, u8 *slp_typ_b);
 - acpi_status acpi_leave_sleep_state_prep(u8 sleep_state);
 +acpi_status acpi_leave_sleep_state_prep(u8 sleep_state);
Some empty lines are restored by this commit due to the change of the
removal implementation.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:39 +01:00
Bob Moore
a2c8633b40 ACPICA: Update ACPI example code to make it an actual working program.
Previously, the example code (tools/examples) showed the ACPICA
init code, but was not an actual working program. Added ACPI tables
to make it actually function.

Linux kernel behaviour is not affected as the change only applies
to the ACPICA userspace utilities which are not shipped in the
kernel currently.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:38 +01:00
Betty Dall
36f3615152 ACPICA: Add helper macros to extract bus/segment numbers from HEST table.
This change adds two macros to extract the encoded bus and segment
numbers from the HEST Bus field.

Signed-off-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:37 +01:00
Bob Moore
f0d73664c1 ACPICA: Tables: Add full support for the PCCT table, update table definition.
Updates the PCCT table definition in the actbl3.h header.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:37 +01:00
Bob Moore
774552229a ACPICA: Tables: Add full support for the DBG2 table.
Updates the DBG2 (Debug Port 2) table definition in the actbl2.h header.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:36 +01:00
Bob Moore
0249ed2444 ACPICA: Add option to favor 32-bit FADT addresses.
This change adds an option to favor 32-bit FADT addresses when there
is a conflict between the 32-bit and 64-bit versions of the same
address. The default behavior is to use the 64-bit version in accordance
with the ACPI specification. This can now be overridden via the
AcpiGbl_Use32BitFadtAddresses flag. Lv Zheng.

Also, the "Convert FADT" and "Verify FADT" functions have been merged to
simplify the code, make it easier to understand, and make it easier to
maintain. Bob Moore.

References: https://bugs.acpica.org/show_bug.cgi?id=885
References: https://bugs.acpica.org/show_bug.cgi?id=993
Original-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:36 +01:00
Lv Zheng
fab4610583 ACPICA: Cleanup the option of forcing the use of the RSDT.
This change adds a runtime option that will force ACPICA to use the
RSDT instead of the XSDT. Although the ACPI spec requires that an XSDT
be used instead of the RSDT, the XSDT has been found to be corrupt or
ill-formed on some machines.

This option is already in the Linux kernel.  When it is back ported to
ACPICA, code is re-written to follow ACPICA coding style.  This patch
is the generation of the integration.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:36 +01:00
Lv Zheng
671cc68dc6 ACPICA: Back port and refine validation of the XSDT root table.
Some platforms contain an XSDT that is ill-formed or otherwise invalid
(such as containing some or all entries that are NULL pointers).
This change adds a new function to validate the XSDT before actually
using it. If the XSDT is found to be invalid, ACPICA will now fall
back to using the RSDT instead.

This feature is already in the Linux kernel.  When it is back ported to
ACPICA, code is refined to follow ACPICA coding style and this patch
is the generation of the integration.

Original-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:36 +01:00
Lv Zheng
b1c1029d72 ACPICA: Linux Header: Remove unused OSL prototypes.
This patch removes 2 useless OSL prototypes as they are not used by Linux now.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:36 +01:00
Lv Zheng
bb3fec146c ACPICA: Remove unused ACPI_FREE_BUFFER macro. No functional change.
This macro is no longer used by ACPICA and it is not public.
Also update comments related to the use of ACPI_ALLOCATE_BUFFER and
the use of acpi_os_free (kfree is equivalent and prefered in the
kernel) to free the buffer.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-08 15:31:36 +01:00
Jiang Liu
a65ac52041 ACPI: introduce helper interfaces for _DSM method
There are several drivers making use of ACPI _DSM method to detect
and invoke device specific methods. Currently every driver has
implemented its private version to support ACPI _DSM method.
So this patch introduces three helper functions to support ACPI _DSM
method, which will be used to replace open-coded versions.

It helps to simplify code and improve code readability.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-05 16:07:14 +01:00
Rafael J. Wysocki
4706515a92 Merge branches 'acpi-pci-pm' and 'acpi-pci-hotplug'
* acpi-pci-pm:
  PCI / ACPI: Install wakeup notify handlers for all PCI devs with ACPI

* acpi-pci-hotplug:
  ACPIPHP / radeon / nouveau: Fix VGA switcheroo problem related to hotplug
  ACPI / PCI / hotplug: Avoid warning when _ADR not present
2013-12-31 22:03:37 +01:00
Rafael J. Wysocki
d1badf8d43 Merge branch 'acpi-pci-hotplug' into acpi-hotplug
Conflicts:
	include/acpi/acpi_bus.h
2013-12-31 13:41:08 +01:00
Rafael J. Wysocki
f244d8b623 ACPIPHP / radeon / nouveau: Fix VGA switcheroo problem related to hotplug
The changes in the ACPI-based PCI hotplug (ACPIPHP) subsystem made
during the 3.12 development cycle uncovered a problem with VGA
switcheroo that on some systems, when the device-specific method
(ATPX in the radeon case, _DSM in the nouveau case) is used to turn
off the discrete graphics, the BIOS generates ACPI hotplug events for
that device and those events cause ACPIPHP to attempt to remove the
device from the system (they are events for a device that was present
previously and is not present any more, so that's what should be done
according to the spec).  Then, the system stops functioning correctly.

Since the hotplug events in question were simply silently ignored
previously, the least intrusive way to address that problem is to
make ACPIPHP ignore them again.  For this purpose, introduce a new
ACPI device flag, no_hotplug, and modify ACPIPHP to ignore hotplug
events for PCI devices whose ACPI companions have that flag set.
Next, make the radeon and nouveau switcheroo detection code set the
no_hotplug flag for the discrete graphics' ACPI companion.

Fixes: bbd34fcdd1 (ACPI / hotplug / PCI: Register all devices under the given bridge)
References: https://bugzilla.kernel.org/show_bug.cgi?id=61891
References: https://bugzilla.kernel.org/show_bug.cgi?id=64891
Reported-and-tested-by: Mike Lothian <mike@fireburn.co.uk>
Reported-and-tested-by: <madcatx@atlas.cz>
Reported-and-tested-by: Joaquín Aramendía <samsagax@gmail.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: 3.12+ <stable@vger.kernel.org> # 3.12+
2013-12-31 13:39:42 +01:00
Rafael J. Wysocki
d22ddcbc4f ACPI / hotplug: Add demand_offline hotplug profile flag
Add a new ACPI hotplug profile flag, demand_offline, such that if
set for the given ACPI device object's scan handler, it will cause
acpi_scan_hot_remove() to check if that device object's physical
companions are offline upfront and fail the hot removal if that
is not the case.

That flag will be useful to overcome a problem with containers on
some system where they can only be hot-removed after some cleanup
operations carried out by user space, which needs to be notified
of the container hot-removal before the kernel attempts to offline
devices in the container.  In those cases the current implementation
of acpi_scan_hot_remove() is not sufficient, because it first tries
to offline the devices in the container and only if that is
suffcessful it tries to offline the container itself.  As a result,
the container hot-removal notification is not delivered to user space
at the right time.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-12-29 15:25:35 +01:00
Lv Zheng
27d50c8271 ACPI / i915: Fix incorrect <acpi/acpi.h> inclusions via <linux/acpi_io.h>
To avoid build problems and breaking dependencies between ACPI header
files, <acpi/acpi.h> should not be included directly by code outside
of the ACPI core subsystem.  However, that is possible if
<linux/acpi_io.h> is included, because that file contains
a direct inclusion of <acpi/acpi.h>.

For this reason, remove the direct <acpi/acpi.h> inclusion from
<linux/acpi_io.h>, move that file from include/linux/ to include/acpi/
and make <linux/acpi.h> include it for CONFIG_ACPI set along with the
other ACPI header files.  Accordingly, Remove the inclusions of
<linux/acpi_io.h> from everywhere.

Of course, that causes the contents of the new <acpi/acpi_io.h> file
to be available for CONFIG_ACPI set only, so intel_opregion.o that
depends on it should also depend on CONFIG_ACPI (and it really should
not be compiled for CONFIG_ACPI unset anyway).

References: https://01.org/linuxgraphics/sites/default/files/documentation/acpi_igd_opregion_spec.pdf
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[rjw: Subject and changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-12-07 01:24:33 +01:00
Rafael J. Wysocki
bfecc2b3e3 ACPI / bind: Move acpi_get_child() to drivers/ide/ide-acpi.c
Since drivers/ide/ide-acpi.c is the only remaining user of
acpi_get_child(), move that function into that file as a static
routine.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-12-07 01:05:50 +01:00
Rafael J. Wysocki
e3f02c5228 ACPI / bind: Rework struct acpi_bus_type
Replace the .find_device function pointer in struct acpi_bus_type
with a new one, .find_companion, that is supposed to point to a
function returning struct acpi_device pointer (instead of an int)
and takes one argument (instead of two).  This way the role of
this callback is more clear and the implementation of it can
be more straightforward.

Update all of the users of struct acpi_bus_type (PCI, PNP/ACPI and
USB) to reflect the structure change.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Lan Tianyu <tianyu.lan@intel.com> # for USB/ACPI
2013-12-07 01:05:50 +01:00
Rafael J. Wysocki
9c5ad36d98 ACPI / bind: Redefine acpi_preset_companion()
Modify acpi_preset_companion() to take a struct acpi_device pointer
instead of an ACPI handle as its second argument and redefine it as
a static inline wrapper around ACPI_COMPANION_SET() passing the
return value of acpi_find_child_device() directly as the second
argument to it.  Update its users to pass struct acpi_device
pointers instead of ACPI handles to it.

This allows some unnecessary acpi_bus_get_device() calls to be
avoided.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Aaron Lu <aaron.lu@intel.com> # for ATA binding
2013-12-07 01:05:49 +01:00
Rafael J. Wysocki
11dcc75dba ACPI / bind: Redefine acpi_get_child()
Since acpi_get_child() is the only user of acpi_find_child() now,
drop the static inline definition of the former and redefine the
latter as new acpi_get_child().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Aaron Lu <aaron.lu@intel.com> # for ATA binding
2013-12-07 01:05:49 +01:00
Rafael J. Wysocki
d9fef0c4d2 ACPI / bind: Simplify child device lookups
Now that we create a struct acpi_device object for every ACPI
namespace node representing a device, it is not necessary to
use acpi_walk_namespace() for child device lookup in
acpi_find_child() any more.  Instead, we can simply walk the
list of children of the given struct acpi_device object and
return the matching one (or the one which is the best match if
there are more of them).  The checks done during the matching
loop can be simplified too so that the secondary namespace walks
in find_child_checks() are not necessary any more.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
2013-12-07 01:05:48 +01:00
Rafael J. Wysocki
9ccad66f01 Merge branch 'acpi-cleanup' into acpi-hotplug
Conflicts:
	drivers/acpi/scan.c
2013-12-07 01:05:17 +01:00
Lv Zheng
8b48463f89 ACPI: Clean up inclusions of ACPI header files
Replace direct inclusions of <acpi/acpi.h>, <acpi/acpi_bus.h> and
<acpi/acpi_drivers.h>, which are incorrect, with <linux/acpi.h>
inclusions and remove some inclusions of those files that aren't
necessary.

First of all, <acpi/acpi.h>, <acpi/acpi_bus.h> and <acpi/acpi_drivers.h>
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
<linux/acpi.h> includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.

Second, there are ordering dependencies between those files that always
have to be met.  Namely, it is required that <acpi/acpi_bus.h> be included
prior to <acpi/acpi_drivers.h> so that the acpi_pci_root declarations the
latter depends on are always there.  And <acpi/acpi.h> which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
<linux/acpi.h> as appropriate.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> (Xen stuff)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-12-07 01:03:14 +01:00
Rafael J. Wysocki
2d304ba757 Merge branch 'acpica'
* acpica:
  ACPI: Clean up incorrect inclusions of ACPICA headers
  ACPICA: Update version to 20131115.
  ACPICA: Add support to delete all objects attached to the root namespace node.
  ACPICA: Delete all attached data objects during namespace node deletion.
  ACPICA: Resources: Fix loop termination for the get AML length function.
  ACPICA: Tests: Add CHECKSUM_ABORT protection for test utilities.
  ACPICA: Debug output: Do not emit function nesting level for kernel build.
2013-11-27 01:03:27 +01:00
Rafael J. Wysocki
434a438af2 Merge branches 'acpi-hotplug', 'acpi-sysfs' and 'acpi-sleep'
* acpi-hotplug:
  ACPI / hotplug: Fix conflicted PCI bridge notify handlers

* acpi-sysfs:
  ACPI / sysfs: Fix incorrect ACPI tables walk in acpi_tables_sysfs_init()
  ACPI / sysfs: Set file size for each exposed ACPI table

* acpi-sleep:
  ACPI / sleep: clean up compiler warning about uninitialized field
2013-11-25 22:30:30 +01:00
Rafael J. Wysocki
25db115b0b ACPI: Introduce acpi_set_device_status()
Introduce a static inline function for setting the status field
of struct acpi_device on the basis of a supplied u32 number,
acpi_set_device_status(), and use it instead of the horrible
horrible STRUCT_TO_INT() macro wherever applicable.  Having done
that, drop STRUCT_TO_INT() (and pretend that it has never existed).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2013-11-22 21:56:06 +01:00
Rafael J. Wysocki
46394fd017 ACPI / hotplug: Move container-specific code out of the core
Move container-specific uevents from the core hotplug code to the
container scan handler's .attach() and .detach() callbacks.

This way the core will not have to special-case containers and
the uevents will be guaranteed to happen every time a container
is either scanned or trimmed as appropriate.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2013-11-22 21:55:32 +01:00
Rafael J. Wysocki
3338db0057 ACPI / hotplug: Make ACPI PCI root hotplug use common hotplug code
Rework the common ACPI device hotplug code so that it is suitable
for PCI host bridge hotplug and switch the PCI host bridge scan
handler to using the common hotplug code.

This allows quite a few lines of code that are not necessary any more
to be dropped from the PCI host bridge scan handler and removes
arbitrary differences in behavior between PCI host bridge hotplug
and ACPI-based hotplug of other components, like CPUs and memory.

Also acpi_device_hotplug() can be static now.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2013-11-22 21:55:20 +01:00
Rafael J. Wysocki
202317a573 ACPI / scan: Add acpi_device objects for all device nodes in the namespace
Modify the ACPI namespace scanning code to register a struct
acpi_device object for every namespace node representing a device,
processor and so on, even if the device represented by that namespace
node is reported to be not present and not functional by _STA.

There are multiple reasons to do that.  First of all, it avoids
quite a lot of overhead when struct acpi_device objects are
deleted every time acpi_bus_trim() is run and then added again
by a subsequent acpi_bus_scan() for the same scope, although the
namespace objects they correspond to stay in memory all the time
(which always is the case on a vast majority of systems).

Second, it will allow user space to see that there are namespace
nodes representing devices that are not present at the moment and may
be added to the system.  It will also allow user space to evaluate
_SUN for those nodes to check what physical slots the "missing"
devices may be put into and it will make sense to add a sysfs
attribute for _STA evaluation after this change (that will be
useful for thermal management on some systems).

Next, it will help to consolidate the ACPI hotplug handling among
subsystems by making it possible to store hotplug-related information
in struct acpi_device objects in a standard common way.

Finally, it will help to avoid a race condition related to the
deletion of ACPI namespace nodes.  Namely, namespace nodes may be
deleted as a result of a table unload triggered by _EJ0 or _DCK.
If a hotplug notification for one of those nodes is triggered
right before the deletion and it executes a hotplug callback
via acpi_hotplug_execute(), the ACPI handle passed to that
callback may be stale when the callback actually runs.  One way
to work around that is to always pass struct acpi_device pointers
to hotplug callbacks after doing a get_device() on the objects in
question which eliminates the use-after-free possibility (the ACPI
handles in those objects are invalidated by acpi_scan_drop_device(),
so they will trigger ACPICA errors on attempts to use them).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2013-11-22 21:54:37 +01:00
Rafael J. Wysocki
d783156ea3 ACPI / scan: Define non-empty device removal handler
If an ACPI namespace node is removed (usually, as a result of a
table unload), and there is a data object attached to that node,
acpi_ns_delete_node() executes the removal handler submitted to
acpi_attach_data() for that object.  That handler is currently empty
for struct acpi_device objects, so it is necessary to detach those
objects from the corresponding ACPI namespace nodes in advance every
time a table unload may happen.  That is cumbersome and inefficient
and leads to some design constraints that turn out to be quite
inconvenient (in particular, struct acpi_device objects cannot be
registered for namespace nodes representing devices that are not
reported as present or functional by _STA).

For this reason, introduce a non-empty removal handler for ACPI
device objects that will unregister them when their ACPI namespace
nodes go away.

This code modification alone should not change functionality except
for the ordering of the ACPI hotplug workqueue which should not
matter (without subsequent code changes).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2013-11-22 21:52:12 +01:00
Rafael J. Wysocki
74fc9cb2b9 Merge branch 'acpica' into acpi-hotplug
The subsequent commits depend on the 'acpica' material.
2013-11-22 21:48:20 +01:00
Rafael J. Wysocki
76540969b1 Merge back earlier acpi-hotplug material. 2013-11-22 21:48:00 +01:00
Bob Moore
a3ccfcc1e7 ACPICA: Update version to 20131115.
Version 20131115.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-21 13:47:04 +01:00
Lv Zheng
c38f671e39 ACPICA: Tests: Add CHECKSUM_ABORT protection for test utilities.
This patch adds protection around ACPI_CHECKSUM_ABORT so that ACPI
user space test utilities can re-define it for their own purposes
(currently used by ASLTS build environment).

This patch doesn't affect Linux kernel behavior.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-21 13:47:03 +01:00
Toshi Kani
ca499fc87e ACPI / hotplug: Fix conflicted PCI bridge notify handlers
The PCI host bridge scan handler installs its own notify handler,
handle_hotplug_event_root(), by itself.  Nevertheless, the ACPI
hotplug framework also installs the common notify handler,
acpi_hotplug_notify_cb(), for PCI root bridges.  This causes
acpi_hotplug_notify_cb() to call _OST method with unsupported
error as hotplug.enabled is not set.

To address this issue, introduce hotplug.ignore flag, which
indicates that the scan handler installs its own notify handler by
itself.  The ACPI hotplug framework does not install the common
notify handler when this flag is set.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
[rjw: Changed the name of the new flag]
Cc: 3.9+ <stable@vger.kernel.org> # 3.9+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-20 14:25:34 +01:00
Rafael J. Wysocki
7b1998116b ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node
Modify struct acpi_dev_node to contain a pointer to struct acpi_device
associated with the given device object (that is, its ACPI companion
device) instead of an ACPI handle corresponding to it.  Introduce two
new macros for manipulating that pointer in a CONFIG_ACPI-safe way,
ACPI_COMPANION() and ACPI_COMPANION_SET(), and rework the
ACPI_HANDLE() macro to take the above changes into account.
Drop the ACPI_HANDLE_SET() macro entirely and rework its users to
use ACPI_COMPANION_SET() instead.  For some of them who used to
pass the result of acpi_get_child() directly to ACPI_HANDLE_SET()
introduce a helper routine acpi_preset_companion() doing an
equivalent thing.

The main motivation for doing this is that there are things
represented by struct acpi_device objects that don't have valid
ACPI handles (so called fixed ACPI hardware features, such as
power and sleep buttons) and we would like to create platform
device objects for them and "glue" them to their ACPI companions
in the usual way (which currently is impossible due to the
lack of valid ACPI handles).  However, there are more reasons
why it may be useful.

First, struct acpi_device pointers allow of much better type checking
than void pointers which are ACPI handles, so it should be more
difficult to write buggy code using modified struct acpi_dev_node
and the new macros.  Second, the change should help to reduce (over
time) the number of places in which the result of ACPI_HANDLE() is
passed to acpi_bus_get_device() in order to obtain a pointer to the
struct acpi_device associated with the given "physical" device,
because now that pointer is returned by ACPI_COMPANION() directly.
Finally, the change should make it easier to write generic code that
will build both for CONFIG_ACPI set and unset without adding explicit
compiler directives to it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> # on Haswell
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com> # for ATA and SDIO part
2013-11-14 23:14:43 +01:00
Linus Torvalds
f9300eaaac ACPI and power management updates for 3.13-rc1
- New power capping framework and the the Intel Running Average Power
    Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.
 
  - Addition of the in-kernel switching feature to the arm_big_little
    cpufreq driver from Viresh Kumar and Nicolas Pitre.
 
  - cpufreq support for iMac G5 from Aaro Koskinen.
 
  - Baytrail processors support for intel_pstate from Dirk Brandewie.
 
  - cpufreq support for Midway/ECX-2000 from Mark Langsdorf.
 
  - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.
 
  - ACPI power management support for the I2C and SPI bus types from
    Mika Westerberg and Lv Zheng.
 
  - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
    Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.
 
  - cpufreq drivers updates (mostly fixes and cleanups) from Viresh Kumar,
    Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz Majewski,
    Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.
 
  - intel_pstate updates from Dirk Brandewie and Adrian Huang.
 
  - ACPICA update to version 20130927 includig fixes and cleanups and
    some reduction of divergences between the ACPICA code in the kernel
    and ACPICA upstream in order to improve the automatic ACPICA patch
    generation process.  From Bob Moore, Lv Zheng, Tomasz Nowicki,
    Naresh Bhat, Bjorn Helgaas, David E Box.
 
  - ACPI IPMI driver fixes and cleanups from Lv Zheng.
 
  - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani,
    Zhang Yanfei, Rafael J Wysocki.
 
  - Conversion of the ACPI AC driver to the platform bus type and
    multiple driver fixes and cleanups related to ACPI from Zhang Rui.
 
  - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
    Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.
 
  - Fixes and cleanups and new blacklist entries related to the ACPI
    video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
    Kirill Tkhai.
 
  - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.
 
  - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
    Bartlomiej Zolnierkiewicz, Prarit Bhargava.
 
  - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.
 
  - Operation Performance Points (OPP) core updates from Nishanth Menon.
 
  - Runtime power management core fix from Rafael J Wysocki and update
    from Ulf Hansson.
 
  - Hibernation fixes from Aaron Lu and Rafael J Wysocki.
 
  - Device suspend/resume lockup detection mechanism from Benoit Goby.
 
  - Removal of unused proc directories created for various ACPI drivers
    from Lan Tianyu.
 
  - ACPI LPSS driver fix and new device IDs for the ACPI platform scan
    handler from Heikki Krogerus and Jarkko Nikula.
 
  - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.
 
  - Assorted fixes and cleanups related to ACPI from Andy Shevchenko,
    Al Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
    Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
    Liu Chuansheng.
 
  - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
    Jean-Christophe Plagniol-Villard.
 
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Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael J Wysocki:

 - New power capping framework and the the Intel Running Average Power
   Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.

 - Addition of the in-kernel switching feature to the arm_big_little
   cpufreq driver from Viresh Kumar and Nicolas Pitre.

 - cpufreq support for iMac G5 from Aaro Koskinen.

 - Baytrail processors support for intel_pstate from Dirk Brandewie.

 - cpufreq support for Midway/ECX-2000 from Mark Langsdorf.

 - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.

 - ACPI power management support for the I2C and SPI bus types from Mika
   Westerberg and Lv Zheng.

 - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
   Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.

 - cpufreq drivers updates (mostly fixes and cleanups) from Viresh
   Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz
   Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.

 - intel_pstate updates from Dirk Brandewie and Adrian Huang.

 - ACPICA update to version 20130927 includig fixes and cleanups and
   some reduction of divergences between the ACPICA code in the kernel
   and ACPICA upstream in order to improve the automatic ACPICA patch
   generation process.  From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh
   Bhat, Bjorn Helgaas, David E Box.

 - ACPI IPMI driver fixes and cleanups from Lv Zheng.

 - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang
   Yanfei, Rafael J Wysocki.

 - Conversion of the ACPI AC driver to the platform bus type and
   multiple driver fixes and cleanups related to ACPI from Zhang Rui.

 - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
   Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.

 - Fixes and cleanups and new blacklist entries related to the ACPI
   video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
   Kirill Tkhai.

 - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.

 - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
   Bartlomiej Zolnierkiewicz, Prarit Bhargava.

 - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.

 - Operation Performance Points (OPP) core updates from Nishanth Menon.

 - Runtime power management core fix from Rafael J Wysocki and update
   from Ulf Hansson.

 - Hibernation fixes from Aaron Lu and Rafael J Wysocki.

 - Device suspend/resume lockup detection mechanism from Benoit Goby.

 - Removal of unused proc directories created for various ACPI drivers
   from Lan Tianyu.

 - ACPI LPSS driver fix and new device IDs for the ACPI platform scan
   handler from Heikki Krogerus and Jarkko Nikula.

 - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.

 - Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al
   Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
   Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
   Liu Chuansheng.

 - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
   Jean-Christophe Plagniol-Villard.

* tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits)
  cpufreq: conservative: fix requested_freq reduction issue
  ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
  PM / runtime: Use pm_runtime_put_sync() in __device_release_driver()
  ACPI / event: remove unneeded NULL pointer check
  Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1"
  ACPI / video: Quirk initial backlight level 0
  ACPI / video: Fix initial level validity test
  intel_pstate: skip the driver if ACPI has power mgmt option
  PM / hibernate: Avoid overflow in hibernate_preallocate_memory()
  ACPI / hotplug: Do not execute "insert in progress" _OST
  ACPI / hotplug: Carry out PCI root eject directly
  ACPI / hotplug: Merge device hot-removal routines
  ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
  ACPI / hotplug: Simplify device ejection routines
  ACPI / hotplug: Fix handle_root_bridge_removal()
  ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug
  ACPI / scan: Start matching drivers after trying scan handlers
  ACPI: Remove acpi_pci_slot_init() headers from internal.h
  ACPI / blacklist: fix name of ThinkPad Edge E530
  PowerCap: Fix build error with option -Werror=format-security
  ...

Conflicts:
	arch/arm/mach-omap2/opp.c
	drivers/Kconfig
	drivers/spi/spi.c
2013-11-14 13:41:48 +09:00
Rafael J. Wysocki
63ff4d0765 Merge branch 'acpi-hotplug'
* acpi-hotplug:
  ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
  ACPI / hotplug: Do not execute "insert in progress" _OST
  ACPI / hotplug: Carry out PCI root eject directly
  ACPI / hotplug: Merge device hot-removal routines
  ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
  ACPI / hotplug: Simplify device ejection routines
  ACPI / hotplug: Fix handle_root_bridge_removal()
  ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug
  ACPI / scan: Start matching drivers after trying scan handlers
  ACPI: Remove acpi_pci_slot_init() headers from internal.h

Conflicts:
	include/acpi/acpiosxf.h (with the 'acpica' branch)
2013-11-07 19:31:15 +01:00
Rafael J. Wysocki
7b98118aaa ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
There are two different interfaces for queuing up work items on the
ACPI hotplug workqueue, alloc_acpi_hp_work() used by PCI and PCI host
bridge hotplug code and acpi_os_hotplug_execute() used by the common
ACPI hotplug code and docking stations.  They both are somewhat
cumbersome to use and work slightly differently.

The users of alloc_acpi_hp_work() have to submit a work function that
will extract the necessary data items from a struct acpi_hp_work
object allocated by alloc_acpi_hp_work() and then will free that
object, while it would be more straightforward to simply use a work
function with one more argument and let the interface take care of
the execution details.

The users of acpi_os_hotplug_execute() also have to deal with the
fact that it takes only one argument in addition to the work function
pointer, although acpi_os_execute_deferred() actually takes care of
the allocation and freeing of memory, so it would have been able to
pass more arguments to the work function if it hadn't been
constrained by the connection with acpi_os_execute().

Moreover, while alloc_acpi_hp_work() makes GFP_KERNEL memory
allocations, which is correct, because hotplug work items are
always queued up from process context, acpi_os_hotplug_execute()
uses GFP_ATOMIC, as that is needed by acpi_os_execute().  Also,
acpi_os_execute_deferred() queued up by it waits for the ACPI event
workqueues to flush before executing the work function, whereas
alloc_acpi_hp_work() can't do anything similar.  That leads to
somewhat arbitrary differences in behavior between various ACPI
hotplug code paths and has to be straightened up.

For this reason, replace both alloc_acpi_hp_work() and
acpi_os_hotplug_execute() with a single interface,
acpi_hotplug_execute(), combining their behavior and being more
friendly to its users than any of the two.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2013-11-07 19:28:48 +01:00
Rafael J. Wysocki
0faf996f4d Merge branch 'acpica'
* acpica: (35 commits)
  ACPICA: Add __init for ACPICA initializers/finalizers.
  ACPICA: Cleanup asmlinkage for ACPICA APIs.
  ACPICA: Update acpidump related header file changes.
  ACPICA: Update compilation environment settings.
  ACPICA: Fix cached object deletion code.
  ACPICA: Remove dead AOPOBJ_INVALID check.
  ACPICA: Cleanup useless memset invocations.
  ACPICA: Fix an ACPI_ALLOCATE_ZEROED() reversal.
  ACPICA: Fix wrong object length returned by acpi_ut_get_simple_object_size().
  ACPICA: Add new statistics interface.
  ACPICA: Update DMAR table definitions.
  ACPICA: Update RSDP table definitions.
  ACPICA: Update namespace dump code.
  ACPICA: Update check for setting the ANOBJ_IS_EXTERNAL flag.
  ACPICA: Update default space handlers.
  ACPICA: Update version to 20130927.
  ACPICA: Update aclinux.h for new OSL override mechanism.
  ACPICA: Add support to allow host OS to redefine individual OSL prototypes.
  ACPICA: Simplify configuration of global ACPI_REDUCED_HARDWARE macro.
  ACPICA: Fix indentation issues for macro invocations.
  ...
2013-11-07 19:21:11 +01:00
Rafael J. Wysocki
8dbb8d54fe Merge branch 'acpi-processor'
* acpi-processor:
  ACPI / processor: Do not request ACPI cpufreq module directly
2013-11-07 19:18:27 +01:00
Rafael J. Wysocki
ace8238b00 ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
Notice that handle_root_bridge_removal() is the only user of
acpi_bus_hot_remove_device(), so it doesn't have to be exported
any more and can be made internal to the ACPI core.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
2013-11-07 01:41:48 +01:00
Rafael J. Wysocki
5add99cfef ACPI / hotplug: Simplify device ejection routines
Simplify handle_root_bridge_removal() and acpi_eject_store() by
getting rid of struct acpi_eject_event and passing device objects
directly to async routines executed via acpi_os_hotplug_execute().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
2013-11-07 01:41:39 +01:00
Lv Zheng
45c9f78b25 ACPICA: Add __init for ACPICA initializers/finalizers.
This patch adds __init to the ACPICA documented initializers:
  acpi_initialize_tables()
  acpi_initialize_subsystem()
  acpi_load_tables()
  acpi_enable_subsystem()
  acpi_initialize_objects()
and to acpi_reallocate_root_table(), acpi_find_root_pointer() which
are also meant to be called only during initialization.

This patch adds __init to the ACPICA documented finalizer:
  acpi_terminate()
as this finalizer is only called in __init function now.

This change helps to reduce source code differences between
ACPICA upstream and Linux.

[rjw: Changelog]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:36 +01:00
Lv Zheng
40bce100ca ACPICA: Cleanup asmlinkage for ACPICA APIs.
Add an asmlinkage wrapper around acpi_enter_sleep_state() to prevent
an empty stub from being called by assmebly code for ACPI_REDUCED_HARDWARE
set.

As arch/x86/kernel/acpi/wakeup_xx.S is only compiled when CONFIG_ACPI=y
and there are no users of ACPI_HARDWARE_REDUCED, currently this is in
fact not a real issue, but a cleanup to reduce source code differences
between Linux and ACPICA upstream.

[rjw: Changelog]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:35 +01:00
Lv Zheng
efb835429f ACPICA: Update acpidump related header file changes.
This patch updates header files used by acpidump to reduce the
source code differences between Linux and ACPICA upstream.

This patch does not affect the generation of the Linux kernel binary.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:35 +01:00
Lv Zheng
a4fb614ad0 ACPICA: Update compilation environment settings.
This patch updates architecture specific environment settings to reduce
source differences between Linux and ACPICA upstream.

This patch does not affect the generation of the Linux kernel binary.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:35 +01:00
Lv Zheng
9187a415fd ACPICA: Add new statistics interface.
This patch ports new counters and statistics interface, already
implemented in ACPICA upstream, to Linux.  That helps to reduce
source code differences between Linux and ACPICA upstream.

[rjw: Changelog]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:33 +01:00
Lv Zheng
fa5f508f94 ACPICA: Update DMAR table definitions.
This patch updates DMAR table header definitions as such enhancement
has been made in ACPICA upstream already.  It ports that change to
the Linux source to reduce source code differences between Linux and
ACPICA upstream.

Build test done on x86-64 machine with the following configs enabled:
  CONFIG_DMAR_TABLE
  CONFIG_IRQ_REMAP
  CONFIG_INTEL_IOMMU

This patch does not affect the generation of the Linux kernel binary.

[rjw: Changelog]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:32 +01:00
Lv Zheng
09b8b1fce7 ACPICA: Update RSDP table definitions.
This patch updates RSDP table header definitions as such enhancement
has been made in ACPICA upstream already.  It ports that change to
the Linux source to reduce source code differences between Linux and
ACPICA upstream.

This patch does not affect the generation of the Linux kernel binary.

[rjw: Changelog]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:32 +01:00
Bob Moore
affffae367 ACPICA: Update version to 20130927.
Version 20130927.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:37:30 +01:00
Lv Zheng
93220587f7 ACPICA: Update aclinux.h for new OSL override mechanism.
The new ACPICA OSL override mechanism is used to solve these issues
for the Linux OSL:
 1. Linux can implement OSL using a macro.
 2. Linux can implement OSL using an inlined function.
 3. Linux can leave OSL not implemented for __KERNEL__ undefined code
    fragments.
 4. Linux can add sparse declarators (__iomem) to OSL.
 5. Linux can add memory tuning declarators (__init/__exit) to OSL.
This patch also moves Linux specific OSL to aclinux.h which has not been
maintained in the ACPICA code base.  Lv Zheng.

Known issue:

 From ACPICA's perspective, actypes.h should be included after inclusion
 of acenv.h.  But currently in Linux, aclinux.h included by acenv.h has
 included actypes.h to find ACPICA types for inline functions.  This is a
 known and existing issue and currently there is no real problem caused
 by this issue for Linux kernel build.  Thus this issue is not covered by
 this cleanup commit.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:36:41 +01:00
Lv Zheng
7e94632fc5 ACPICA: Add support to allow host OS to redefine individual OSL prototypes.
This change enables the host OS to redefine OSL prototypes found in the
acpiosxf.h file. This allows the host OS to implement OSL interfaces with
a macro or inlined function. Further, it allows the host OS to add any
additional required modifiers such as __iomem, __init, __exit, etc.,
as necessary on a per-interface basis. Enables maximum flexibility
for the OSL interfaces. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:35:50 +01:00
Bob Moore
c0144dc0e4 ACPICA: Simplify configuration of global ACPI_REDUCED_HARDWARE macro.
Surround definition of this with a #ifndef so that the kernel
can define it elsewhere if desired.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:35:49 +01:00
Lv Zheng
cd27d79f56 ACPICA: Fix indentation issues for macro invocations.
During the automatic translation of the upstream ACPICA source code
into Linux kernel source code some extra white spaces are added by
the "indent" program at the beginning of each line which is an
invocation of a macro and there is no ";" at the end of the line.

For this reason, a new mode has been added to the translation scripts
to remove the extra spaces inserted before invoking such macros and add
an empty line between the invocations of such macros (like the other
function declarations).  This new mode is executed after executing
"indent" during the Linux release process.  Consequently, some
existing ACPICA source code in the Linux kernel tree needs to be
adjusted to allow the new scripts to work correctly.

The affected macros and files are:
 1. ACPI_HW_DEPENDENT_RETURN (acpixf.h/acdebug.h/acevents.h):
    This macro is used as a wrapper for hardware dependent APIs to offer
    a stub when the reduced hardware is configured during compilation.
 2. ACPI_EXPORT_SYMBOL (utglobal.c):
    This macro is used by Linux to export symbols to be found by Linux
    modules.  All such invocations are well formatted except those
    exported as global variables.

This can help to reduce the source code differences between Linux
and upstream ACPICA, and also help to automate the release process.
No functional or binary generation changes should result from it.
Lv Zheng.

[rjw: Changelog]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:35:46 +01:00
Lv Zheng
4506bf2329 ACPICA: Prevent possible build issues for use of ACPI_PRINTF_LIKE macro
The following build error:
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   CC      arch/x86/kernel/setup.o
 In file included from include/acpi/acpi.h:64:0,
                  from include/linux/iscsi_ibft.h:24,
                  from arch/x86/kernel/setup.c:43:
 include/acpi/acpixf.h:543:1: error: expected ',' or ';' before '{' token
 include/acpi/acpixf.h:540:1: warning: 'acpi_error' declared 'static' but never defined [-Wunused-function]
 make[2]: *** [arch/x86/kernel/setup.o] Error 1
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
can be triggerred by the following stub function (if implemented):
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 static inline void ACPI_INTERNAL_VAR_XFACE
 acpi_error(const char *module_name,
 	   u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3)
 {
 }
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This patch changes the position of ACPI_PRINTF_LIKE(x) to follow the
style of __printf(x, x+1) used in Linux to prevent such issues from
happening.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:35:43 +01:00
Lv Zheng
d21f600b0e ACPICA: Deploy ACPI_EXPORT_SYMBOL_INIT for main ACPICA initialization interfaces.
This changes can reduce source code differences between Linux and ACPICA
upstream to help improving the release automation.

The side effect of applying this patch in Linux is:
1. Some ACPICA initialization/termination APIs are no longer exported in
   Linux, these include:
    acpi_load_tables
    acpi_initialize_subsystem
    acpi_enable_subsystem
    acpi_initialize_objects
    acpi_terminate
2. This patch does not affect the following APIs as they are currently not
   marked with ACPI_EXPORT_SYMBOL in Linux:
    acpi_reallocate_root_table
    acpi_initialize_tables
Such functions should not be exported as they are internal to ACPI
subsystem in Linux, and will only be invoked inside of ACPI subsystem's
initialization routines marked with __init and termination routines marked
with __exit.  While on other OSPMs, such functions may still need to be
exported.

Thus this patch adds the configurability for ACPICA, so that it leaves
OSPMs to determine if the __init/__exit marked functions should be exported
or not.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:35:39 +01:00
Bob Moore
bb1cab3d52 ACPICA: Clarify ACPI_FREE_BUFFER usage.
Add a comment to clarify reason for using ACPI_FREE_BUFFER directly
instead of ACPI_FREE.

In addition to that, change one instance in which ACPI_FREE_BUFFER()
should be used instead of ACPI_FREE().

[rjw: Subject and changelog]
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:35:33 +01:00
Lv Zheng
839e928f5b ACPICA: Add EXPORT_ACPI_INTERFACES macro to external interface modules.
For Linux, there are no functional changes/binary generation differences
introduced by this patch.

This change adds a new macro to all files that contain external ACPICA
interfaces. It can be detected and used by the host (via the host-specific
header) for any special processing required for such modules. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-31 14:34:00 +01:00
Bob Moore
e07fcfd89f ACPICA: Hardcode access width for the reset register.
The ACPI spec requires the reset register width to be 8, so we
now hardcode it and ignore the FADT value. This provides/maintains
compatibility with other ACPI implementations that have allowed
BIOS code with bad register width values to go unnoticed.
Matthew Garett, Bob Moore, Lv Zheng.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-30 12:24:22 +01:00
Bob Moore
bf4994aca7 ACPICA: Predefine name macros: Sort list.
Sort the method names in acnames.h.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-30 12:24:21 +01:00
Lv Zheng
b3c86c30ef ACPICA: Cleanup memory allocation macros and configurability.
In the common case, the ACPI_ALLOCATE and related macros now resolve
directly to their respective acpi_os* OSL interfaces. Two options:
1) The ACPI_ALLOCATE_ZEROED macro defaults to a simple local implementation
   by default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
2) For ACPI execution simulation environment (AcpiExec) which is not
   shipped with the Linux kernel, the macros can optionally be resolved to
   the local interfaces that track each allocation (used to immediately
   detect memory leaks).

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-30 12:24:21 +01:00
Bob Moore
c26f3c9080 ACPICA: Fix a macro for the hardware-reduced case
This fix repairs a version of a macro that is used for the hardware
reduced case only. It adds a return statement to the macro definition
so that the translation into the Linux kernel source will not completely
delete the second line of the macro because it thinks that it is an empty
block. It actually clarifies the use of the macro anyway.

Reported-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-30 12:24:20 +01:00
Rafael J. Wysocki
34411a69a4 ACPI / processor: Do not request ACPI cpufreq module directly
Function acpi_processor_load_module() used by the ACPI processor
driver can only really work if the acpi-cpufreq module is available
when acpi_processor_start() is executed which usually is not the case
for systems loading the processor driver module from an initramfs.

Moreover, that used to be a hackish workaround for module autoloading
issues, but udev loads acpi-cpufreq just fine nowadays, so that
function isn't really necessary any more.  For this reason, drop
acpi_processor_load_module() entirely.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-30 00:00:30 +01:00
Rafael J. Wysocki
dd6c26be3b Merge branch 'acpi-pm'
* acpi-pm:
  spi: attach/detach SPI device to the ACPI power domain
  i2c: attach/detach I2C client device to the ACPI power domain
  ACPI / PM: allow child devices to ignore parent power state
2013-10-28 01:17:49 +01:00
Rafael J. Wysocki
9183ea62f7 Merge branch 'acpica'
* acpica:
  MAINTAINERS / ACPICA: Add ACPICA information to MAINTAINERS
  ACPICA: Update version to 20130823.
  ACPICA: SCI Handlers: Update handler interface, eliminate unnecessary argument.
  ACPICA: Cleanup exception codes.
  ACPICA: Tables: Cleanup RSDP signature codes.
  ACPICA: Tables: Cleanup table checksum verification code.
  ACPICA: Debugger: Add new command to display full namespace pathnames.
  ACPICA: Operation region support: Never free the handler "context" pointer.
  ACPICA: Add support for host-installed SCI handlers.
  ACPICA: Validate start object for acpi_walk_namespace.
  ACPICA: Debugger: Prevent possible command line buffer overflow, kernel behavior is not affected.
  ACPICA: Linux-specific header: enable "aarch64" 64-bit build.
  ACPICA: Debug output: small formatting update, no functional change.
  ACPICA: acpi_read: On error, do not modify the return value target location.
  ACPICA: Improve error message for "too many parent prefixes" condition.
2013-10-28 01:14:59 +01:00
Rafael J. Wysocki
3fbc4d6374 Merge branch 'acpi-processor'
* acpi-processor:
  ACPI / processor: fixed a brace coding style issue
  ACPI / processor: Remove outdated comments
  ACPI / processor: remove unnecessary if (!pr) check
  ACPI / processor: remove some dead code in acpi_processor_get_info()
  x86 / ACPI: simplify _acpi_map_lsapic()
  ACPI / processor: use apic_id and remove duplicated _MAT evaluation
  ACPI / processor: Introduce apic_id in struct processor to save parsed APIC id
2013-10-28 01:11:24 +01:00
Chen, Gong
88f074f487 ACPI, CPER: Update cper info
We have a lot of confusing names of functions and data structures in
amongs the the error reporting code.  In particular the "apei" prefix
has been applied to many objects that are not part of APEI.  Since we
will be using these routines for extended error log reporting it will
be clearer if we fix up the names first.

Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Acked-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-10-21 15:12:00 -07:00
Rafael J. Wysocki
2421ad48f4 ACPI / PM: Drop two functions that are not used any more
Two functions defined in device_pm.c, acpi_dev_pm_add_dependent()
and acpi_dev_pm_remove_dependent(), have no callers and may be
dropped, so drop them.

Moreover, they are the only functions adding entries to and removing
entries from the power_dependent list in struct acpi_device, so drop
that list too.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-17 15:44:48 +02:00
Mika Westerberg
644f17ad7f ACPI / PM: allow child devices to ignore parent power state
Some serial buses like I2C and SPI don't require that the parent device is
in D0 before any of its children transitions to D0, but instead the parent
device can control its own power independently from the children.

This does not follow the ACPI specification as it requires the parent to be
powered on before its children. However, Windows seems to ignore this
requirement so I think we can do the same in Linux.

Implement this by adding a new power flag 'ignore_parent' to struct
acpi_device.  If this flag is set the ACPI core ignores checking of the
parent device power state when the device is powered on/off.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-10-11 02:23:14 +02:00
Bob Moore
94d7ba991f ACPICA: Update version to 20130823.
Version 20130823.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-24 01:46:25 +02:00
Bob Moore
c53ae3a60c ACPICA: SCI Handlers: Update handler interface, eliminate unnecessary argument.
The SCI interrupt number is not needed for the SCI handlers, and was
just unnecessary overhead.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-24 01:46:25 +02:00
Lv Zheng
31e93a166c ACPICA: Cleanup exception codes.
This patch adds AE_ACCESS for EACCES or EPERM.  Some error prompts are
also cleaned up in this patch.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-24 01:46:25 +02:00
Lv Zheng
cacba86573 ACPICA: Tables: Cleanup RSDP signature codes.
This patch introduces new macors to handle RSDP signature and cleans up the
affected codes.  Lv Zheng.
Some updates are only used for ACPICA utilities which are not shipped in
the kernel yet.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-24 01:46:24 +02:00
Lv Zheng
a2fd4b4b4e ACPICA: Add support for host-installed SCI handlers.
This change adds support to allow hosts to install System Control
Interrupt handlers. Certain ACPI functionality requires the host
to handle raw SCIs. For example, the "SCI Doorbell" that is defined
for memory power state support requires the host device driver to
handle SCIs to examine if the doorbell has been activated. Multiple
SCI handlers can be installed to allow for future expansion.
Debugger support is included.
Lv Zheng, Bob Moore. ACPICA BZ 1032.

Bug summary:
It is reported when the PCC (Platform Communication Channel, via
MPST table, defined in ACPI specification 5.0) subchannel responds
to the host, it issues an SCI and the host must probe the subchannel
for channel status.

Buglink: http://bugs.acpica.org/show_bug.cgi?id=1032
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-24 01:46:24 +02:00
Naresh Bhat
3009520707 ACPICA: Linux-specific header: enable "aarch64" 64-bit build.
Add support for the __aarch64__ define for 64-bit builds.

Signed-off-by: Naresh Bhat <naresh.bhat@linaro.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-24 01:46:24 +02:00
Jiang Liu
ca9f62ac78 ACPI / processor: Introduce apic_id in struct processor to save parsed APIC id
For cpu hot add, we evaluate _MAT or parse MADT twice to get APIC id,
here is the code logic:
acpi_processor_add()
	acpi_processor_get_info()
		acpi_get_cpuid() will evaluate _MAT or parse MADT;
	acpi_processor_hotadd_init()
		acpi_map_lsapic() will evaluate _MAT again;

This can be done more effectively, this patch introduces apic_id in struct
processor to save parsed APIC id, and then we can use it and remove the
duplicated _MAT evaluation.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-09-24 01:39:39 +02:00
Rafael J. Wysocki
7bc583d102 Merge branch 'acpi-hotplug'
* acpi-hotplug:
  ACPI / hotplug: Remove containers synchronously
  driver core / ACPI: Avoid device hot remove locking issues
2013-08-30 14:14:25 +02:00
Rafael J. Wysocki
f943db40c2 ACPI / hotplug: Remove containers synchronously
The current protocol for handling hot remove of containers is very
fragile and causes acpi_eject_store() to acquire acpi_scan_lock
which may deadlock with the removal of the device that it is called
for (the reason is that device sysfs attributes cannot be removed
while their callbacks are being executed and ACPI device objects
are removed under acpi_scan_lock).

The problem is related to the fact that containers are handled by
acpi_bus_device_eject() in a special way, which is to emit an
offline uevent instead of just removing the container.  Then, user
space is expected to handle that uevent and use the container's
"eject" attribute to actually remove it.  That is fragile, because
user space may fail to complete the ejection (for example, by not
using the container's "eject" attribute at all) leaving the BIOS
kind of in a limbo.  Moreover, if the eject event is not signaled
for a container itself, but for its parent device object (or
generally, for an ancestor above it in the ACPI namespace), the
container will be removed straight away without doing that whole
dance.

For this reason, modify acpi_bus_device_eject() to remove containers
synchronously like any other objects (user space will get its uevent
anyway in case it does some other things in response to it) and
remove the eject_pending ACPI device flag that is not used any more.
This way acpi_eject_store() doesn't have a reason to acquire
acpi_scan_lock any more and one possible deadlock scenario goes
away (plus the code is simplified a bit).

Reported-and-tested-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Toshi Kani <toshi.kani@hp.com>
2013-08-29 22:01:16 +02:00
Rafael J. Wysocki
0c581415b5 Merge branch 'acpi-assorted'
* acpi-assorted:
  ACPI / osl: Kill macro INVALID_TABLE().
  earlycpio.c: Fix the confusing comment of find_cpio_data().
  ACPI / x86: Print Hot-Pluggable Field in SRAT.
  ACPI / thermal: Use THERMAL_TRIPS_NONE macro to replace number
  ACPI / thermal: Remove unused macros in the driver/acpi/thermal.c
  ACPI / thermal: Remove the unused lock of struct acpi_thermal
  ACPI / osl: Fix osi_setup_entries[] __initdata attribute location
  ACPI / numa: Fix __init attribute location in slit_valid()
  ACPI / dock: Fix __init attribute location in find_dock_and_bay()
  ACPI / Sleep: Fix incorrect placement of __initdata
  ACPI / processor: Fix incorrect placement of __initdata
  ACPI / EC: Fix incorrect placement of __initdata
  ACPI / scan: Drop unnecessary label from acpi_create_platform_device()
  ACPI: Move acpi_bus_get_device() from bus.c to scan.c
  ACPI / scan: Allow platform device creation without any IO resources
  ACPI: Cleanup sparse warning on acpi_os_initialize1()
  platform / thinkpad: Remove deprecated hotkey_report_mode parameter
  ACPI: Remove the old /proc/acpi/event interface
2013-08-27 01:29:04 +02:00
Rafael J. Wysocki
afdca01c98 Merge branch 'acpica'
* acpica:
  ACPICA: Update version to 20130725.
  ACPICA: Update names for walk_namespace callbacks to clarify usage.
  ACPICA: Return error if DerefOf resolves to a null package element.
  ACPICA: Make ACPI Power Management Timer (PM Timer) optional.
  ACPICA: Fix divergences of the commit - ACPICA: Expose OSI version.
  ACPICA: Fix possible fault for methods that optionally have no return value.
  ACPICA: DeRefOf operator: Update to fully resolve FieldUnit and BufferField refs.
  ACPICA: Emit all unresolved method externals in a text block
  ACPICA: Export acpi_tb_validate_rsdp().
  ACPI: Add facility to remove all _OSI strings
  ACPI: Add facility to disable all _OSI OS vendor strings
  ACPICA: Add acpi_update_interfaces() public interface
  ACPICA: Update version to 20130626
  ACPICA: Fix compiler warnings for casting issues (only some compilers)
  ACPICA: Remove restriction of 256 maximum GPEs in any GPE block
  ACPICA: Disassembler: Expand maximum output string length to 64K
  ACPICA: TableManager: Export acpi_tb_scan_memory_for_rsdp()
  ACPICA: Update comments about behavior when _STA does not exist
2013-08-27 01:28:48 +02:00
Rafael J. Wysocki
0ad4c9a984 Merge branch 'acpi-pm'
* acpi-pm:
  ACPI / PM: Add state information to error message in acpi_device_set_power()
  ACPI / PM: Remove redundant power manageable check from acpi_bus_set_power()
  ACPI / PM: Use ACPI_STATE_D3_COLD instead of ACPI_STATE_D3 everywhere
  ACPI / PM: Make messages in acpi_device_set_power() print device names
  ACPI / PM: Only set power states of devices that are power manageable
2013-08-27 01:28:17 +02:00
Rafael J. Wysocki
c92f56cbdf Merge branch 'acpi-cleanup'
* acpi-cleanup: (21 commits)
  ACPI / dock: fix error return code in dock_add()
  ACPI / dock: Drop unnecessary local variable from dock_add()
  ACPI / dock / PCI: Drop ACPI dock notifier chain
  ACPI / dock: Do not check CONFIG_ACPI_DOCK_MODULE
  ACPI / dock: Do not leak memory on falilures to add a dock station
  ACPI: Drop ACPI bus notifier call chain
  ACPI / dock: Rework the handling of notifications
  ACPI / dock: Simplify dock_init_hotplug() and dock_release_hotplug()
  ACPI / dock: Walk list in reverse order during removal of devices
  ACPI / dock: Rework and simplify find_dock_devices()
  ACPI / dock: Drop the hp_lock mutex from struct dock_station
  ACPI: simplify acpiphp driver with new helper functions
  ACPI: simplify dock driver with new helper functions
  ACPI: Export acpi_(bay)|(dock)_match() from scan.c
  ACPI: introduce two helper functions for _EJ0 and _LCK
  ACPI: introduce helper function acpi_execute_simple_method()
  ACPI: introduce helper function acpi_has_method()
  ACPI / dock: simplify dock_create_acpi_device()
  ACPI / dock: mark initialization functions with __init
  ACPI / dock: drop redundant spin lock in dock station object
  ...
2013-08-27 01:25:28 +02:00
Rafael J. Wysocki
f3ce717e60 Merge back earlier 'acpi-assorted' material 2013-08-14 23:22:45 +02:00
Bob Moore
36b99b2287 ACPICA: Update version to 20130725.
Version 20130725.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-08-13 13:14:16 +02:00
Bob Moore
4ef1750783 ACPICA: Update names for walk_namespace callbacks to clarify usage.
Use of "preorder" and "postorder" was incorrect. The callbacks are
simply invoked during tree ascent and descent during the
depth-first walk.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-08-13 13:14:16 +02:00
Lv Zheng
2641f54080 ACPICA: Fix divergences of the commit - ACPICA: Expose OSI version.
The original commit 242b2287cd "ACPICA:
expose OSI version" triggers build errors in ACPICA when it is back
ported.  The patch removes the divergences between Linux and upstream
ACPICA resulting from that.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-08-13 13:13:09 +02:00
Rafael J. Wysocki
60f75b8e97 ACPI: Try harder to resolve _ADR collisions for bridges
In theory, under a given ACPI namespace node there should be only
one child device object with _ADR whose value matches a given bus
address exactly.  In practice, however, there are systems in which
multiple child device objects under a given parent have _ADR matching
exactly the same address.  In those cases we use _STA to determine
which of the multiple matching devices is enabled, since some systems
are known to indicate which ACPI device object to associate with the
given physical (usually PCI) device this way.

Unfortunately, as it turns out, there are systems in which many
device objects under the same parent have _ADR matching exactly the
same bus address and none of them has _STA, in which case they all
should be regarded as enabled according to the spec.  Still, if
those device objects are supposed to represent bridges (e.g. this
is the case for device objects corresponding to PCIe ports), we can
try harder and skip the ones that have no child device objects in the
ACPI namespace.  With luck, we can avoid using device objects that we
are not expected to use this way.

Although this only works for bridges whose children also have ACPI
namespace representation, it is sufficient to address graphics
adapter detection issues on some systems, so rework the code finding
a matching device ACPI handle for a given bus address to implement
this idea.

Introduce a new function, acpi_find_child(), taking three arguments:
the ACPI handle of the device's parent, a bus address suitable for
the device's bus type and a bool indicating if the device is a
bridge and make it work as outlined above.  Reimplement the function
currently used for this purpose, acpi_get_child(), as a call to
acpi_find_child() with the last argument set to 'false' and make
the PCI subsystem use acpi_find_child() with the bridge information
passed as the last argument to it.  [Lan Tianyu notices that it is
not sufficient to use pci_is_bridge() for that, because the device's
subordinate pointer hasn't been set yet at this point, so use
hdr_type instead.]

This change fixes a regression introduced inadvertently by commit
33f767d (ACPI: Rework acpi_get_child() to be more efficient) which
overlooked the fact that for acpi_walk_namespace() "post-order" means
"after all children have been visited" rather than "on the way back",
so for device objects without children and for namespace walks of
depth 1, as in the acpi_get_child() case, the "post-order" callbacks
ordering is actually the same as the ordering of "pre-order" ones.
Since that commit changed the namespace walk in acpi_get_child() to
terminate after finding the first matching object instead of going
through all of them and returning the last one, it effectively
changed the result returned by that function in some rare cases and
that led to problems (the switch from a "pre-order" to a "post-order"
callback was supposed to prevent that from happening, but it was
ineffective).

As it turns out, the systems where the change made by commit
33f767d actually matters are those where there are multiple ACPI
device objects representing the same PCIe port (which effectively
is a bridge).  Moreover, only one of them, and the one we are
expected to use, has child device objects in the ACPI namespace,
so the regression can be addressed as described above.

References: https://bugzilla.kernel.org/show_bug.cgi?id=60561
Reported-by: Peter Wu <lekensteyn@gmail.com>
Tested-by: Vladimir Lalov <mail@vlalov.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: 3.9+ <stable@vger.kernel.org> # 3.9+
2013-08-07 22:55:00 +02:00
Rafael J. Wysocki
007ccfcf89 ACPI: Drop physical_node_id_bitmap from struct acpi_device
The physical_node_id_bitmap in struct acpi_device is only used for
looking up the first currently unused dependent phyiscal node ID
by acpi_bind_one().  It is not really necessary, however, because
acpi_bind_one() walks the entire physical_node_list of the given
device object for sanity checking anyway and if that list is always
sorted by node_id, it is straightforward to find the first gap
between the currently used node IDs and use that number as the ID
of the new list node.

This also removes the artificial limit of the maximum number of
dependent physical devices per ACPI device object, which now depends
only on the capacity of unsigend int.  As a result, it fixes a
regression introduced by commit e2ff394 (ACPI / memhotplug: Bind
removable memory blocks to ACPI device nodes) that caused
acpi_memory_enable_device() to fail when the number of 128 MB blocks
within one removable memory module was greater than 32.

Reported-and-tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
2013-08-06 14:32:54 +02:00
Rafael J. Wysocki
caf5c03f17 ACPI: Move acpi_bus_get_device() from bus.c to scan.c
Move acpi_bus_get_device() from bus.c to scan.c which allows
acpi_bus_data_handler() to become static and clean up the latter.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-08-06 14:12:22 +02:00
Rafael J. Wysocki
8ad928d52e ACPI / PM: Use ACPI_STATE_D3_COLD instead of ACPI_STATE_D3 everywhere
There are several places in the tree where ACPI_STATE_D3 is used
instead of ACPI_STATE_D3_COLD which should be used instead for
clarity.  Modify them all to use ACPI_STATE_D3_COLD as appropriate.

[The definition of ACPI_STATE_D3 itself cannot go away at this point
 as it is part of ACPICA.]

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
2013-07-30 14:36:20 +02:00
Rafael J. Wysocki
8e5c2b776a Revert "ACPI / video / i915: No ACPI backlight if firmware expects Windows 8"
We attempted to address a regression introduced by commit a57f7f9
(ACPICA: Add Windows8/Server2012 string for _OSI method.) after which
ACPI video backlight support doesn't work on a number of systems,
because the relevant AML methods in the ACPI tables in their BIOSes
become useless after the BIOS has been told that the OS is compatible
with Windows 8.  That problem is tracked by the bug entry at:

https://bugzilla.kernel.org/show_bug.cgi?id=51231

Commit 8c5bd7a (ACPI / video / i915: No ACPI backlight if firmware
expects Windows 8) introduced for this purpose essentially prevented
the ACPI backlight support from being used if the BIOS had been told
that the OS was compatible with Windows 8 and the i915 driver was
loaded, in which case the backlight would always be handled by i915.
Unfortunately, however, that turned out to cause problems with
backlight to appear on multiple systems with symptoms indicating that
i915 was unable to control the backlight on those systems as
expected.

For this reason, revert commit 8c5bd7a, but leave the function
acpi_video_backlight_quirks() introduced by it, because another
commit on top of it uses that function.

References: https://lkml.org/lkml/2013/7/21/119
References: https://lkml.org/lkml/2013/7/22/261
References: https://lkml.org/lkml/2013/7/23/429
References: https://lkml.org/lkml/2013/7/23/459
References: https://lkml.org/lkml/2013/7/23/81
References: https://lkml.org/lkml/2013/7/24/27
Reported-and-tested-by: James Hogan <james@albanarts.com>
Reported-and-tested-by: Kamal Mostafa <kamal@canonical.com>
Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
Reported-and-tested-by: Steven Newbury <steve@snewbury.org.uk>
Reported-by: Martin Steigerwald <Martin@lichtvoll.de>
Reported-by: Kalle Valo <kvalo@adurom.com>
Tested-by: Joerg Platte <jplatte@naasa.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-26 14:59:20 +02:00
Lv Zheng
2cf9f5bcc8 ACPICA: Add acpi_update_interfaces() public interface
Add new API to allow OSPM to disable/enable specific types of _OSI
interface strings.

ACPICA does not have the knowledge about whether an _OSI interface
string is an OS vendor string or a feature group string and there
isn't any API interface to allow OSPM to install a new interface
string as a feature group string.
This patch simply adds all feature group strings defined by ACPI
specification into the acpi_default_supported_interfaces with
ACPI_OSI_FEATURE flag set to fix this gap.  This patch also adds
codes to keep their default states as ACPI_OSI_INVALID before the
initialization and after the termination.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Conflicts:
	include/acpi/actypes.h (with commit 242b228)
2013-07-23 04:06:03 +02:00
Bob Moore
53b1631e3a ACPICA: Update version to 20130626
Version 20130626.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-23 01:06:50 +02:00
Bob Moore
2c48e3eacb ACPICA: Remove restriction of 256 maximum GPEs in any GPE block
The FADT can support over 1000 GPEs, so remove any restriction
on the GPE numbers.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-23 01:06:49 +02:00
Rafael J. Wysocki
8c5bd7adb2 ACPI / video / i915: No ACPI backlight if firmware expects Windows 8
According to Matthew Garrett, "Windows 8 leaves backlight control up
to individual graphics drivers rather than making ACPI calls itself.
There's plenty of evidence to suggest that the Intel driver for
Windows [8] doesn't use the ACPI interface, including the fact that
it's broken on a bunch of machines when the OS claims to support
Windows 8.  The simplest thing to do appears to be to disable the
ACPI backlight interface on these systems".

There's a problem with that approach, however, because simply
avoiding to register the ACPI backlight interface if the firmware
calls _OSI for Windows 8 may not work in the following situations:
 (1) The ACPI backlight interface actually works on the given system
     and the i915 driver is not loaded (e.g. another graphics driver
     is used).
 (2) The ACPI backlight interface doesn't work on the given system,
     but there is a vendor platform driver that will register its
     own, equally broken, backlight interface if not prevented from
     doing so by the ACPI subsystem.
Therefore we need to allow the ACPI backlight interface to be
registered until the i915 driver is loaded which then will unregister
it if the firmware has called _OSI for Windows 8 (or will register
the ACPI video driver without backlight support if not already
present).

For this reason, introduce an alternative function for registering
ACPI video, acpi_video_register_with_quirks(), that will check
whether or not the ACPI video driver has already been registered
and whether or not the backlight Windows 8 quirk has to be applied.
If the quirk has to be applied, it will block the ACPI backlight
support and either unregister the backlight interface if the ACPI
video driver has already been registered, or register the ACPI
video driver without the backlight interface otherwise.  Make
the i915 driver use acpi_video_register_with_quirks() instead of
acpi_video_register() in i915_driver_load().

This change is based on earlier patches from Matthew Garrett,
Chun-Yi Lee and Seth Forshee and includes a fix from Aaron Lu's.

References: https://bugzilla.kernel.org/show_bug.cgi?id=51231
Tested-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Tested-by: Yves-Alexis Perez <corsac@debian.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
2013-07-18 02:08:06 +02:00
Aaron Lu
242b2287cd ACPICA: expose OSI version
Expose acpi_gbl_osi_data so that code outside of ACPICA can check
the value of the last successfull _OSI call.  The definitions for
OSI versions are moved to actypes.h so that other components can
access them too.

Based on a patch from Matthew Garrett which in turn was based on
an earlier patch from Seth Forshee.

[rjw: Changelog]
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-18 01:29:14 +02:00
Thomas Renninger
1696d9dc57 ACPI: Remove the old /proc/acpi/event interface
It is quite some time that this one has been deprecated.
Get rid of it.

Should some really important user be overseen, it may be reverted and
the userspace program worked on first, but it is time to do something
to get rid of this old stuff...

Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 13:56:36 +02:00
Rafael J. Wysocki
f09ce741a0 ACPI / dock / PCI: Drop ACPI dock notifier chain
The only user of the ACPI dock notifier chain is the ACPI-based PCI
hotplug (acpiphp) driver that uses it to carry out post-dock fixups
needed by some systems with broken _DCK.  However, it is not
necessary to use a separate notifier chain for that, as it can be
simply replaced with a new callback in struct acpi_dock_ops.

For this reason, add a new .fixup() callback to struct acpi_dock_ops
and make hotplug_dock_devices() execute it for all dock devices with
hotplug operations registered.  Accordingly, make acpiphp point that
callback to the function carrying out the post-dock fixups and
do not register a separate dock notifier for each device
registering dock operations.  Finally, drop the ACPI dock notifier
chain that has no more users.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 01:33:12 +02:00
Rafael J. Wysocki
e6c215f15a ACPI / dock: Do not check CONFIG_ACPI_DOCK_MODULE
Since commit 94add0f (ACPI / dock: Initialize ACPI dock subsystem
upfront) the ACPI dock driver cannot be a module, so
CONFIG_ACPI_DOCK_MODULE is never set.  For this reason, simplify
the preprocessor conditional in include/acpi/acpi_drivers.h
referring to that sybbol unnecessarily.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 01:33:11 +02:00
Rafael J. Wysocki
f716fc2ac0 ACPI: Drop ACPI bus notifier call chain
There are no users of the ACPI bus notifier call chain,
acpi_bus_notify_list, any more, so drop it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 01:33:11 +02:00
Jiang Liu
ebf4df8db0 ACPI: Export acpi_(bay)|(dock)_match() from scan.c
Functions acpi_dock_match() and acpi_bay_match() in scan.c can be
shared with dock.c to reduce code duplication, so export them as
global functions.

Also add a new function acpi_ata_match() to check whether an ACPI
device object represents an ATA device.

[rjw: Changelog]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 01:33:10 +02:00
Jiang Liu
7d2421f84b ACPI: introduce two helper functions for _EJ0 and _LCK
Introduce two helper functions, acpi_evaluate_ej0() and
acpi_evaluate_lck(), that will execute the _EJ0 and _LCK ACPI
control methods, respectively, and use them to simplify the
ACPI scan code.

[rjw: Changelog]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 01:33:10 +02:00
Jiang Liu
0db9820260 ACPI: introduce helper function acpi_execute_simple_method()
Introduce helper function acpi_execute_simple_method() and use it in
a number of places to simplify code.

[rjw: Changelog]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 01:33:10 +02:00
Jiang Liu
952c63e951 ACPI: introduce helper function acpi_has_method()
Introduce helper function acpi_has_method() and use it in a number
of places to simplify code.

[rjw: Changelog]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-15 01:33:10 +02:00
Linus Torvalds
862f001254 PCI changes for the v3.11 merge window:
PCI device hotplug
     - Add pci_alloc_dev() interface (Gu Zheng)
     - Add pci_bus_get()/put() for reference counting (Jiang Liu)
     - Fix SR-IOV reference count issues (Jiang Liu)
     - Remove unused acpi_pci_roots list (Jiang Liu)
 
   MSI
     - Conserve interrupt resources on x86 (Alexander Gordeev)
 
   AER
     - Force fatal severity when component has been reset (Betty Dall)
     - Reset link below Root Port as well as Downstream Port (Betty Dall)
     - Fix "Firmware first" flag setting (Bjorn Helgaas)
     - Don't parse HEST for non-PCIe devices (Bjorn Helgaas)
 
   ASPM
     - Warn when we can't disable ASPM as driver requests (Bjorn Helgaas)
 
   Miscellaneous
     - Add CircuitCo PCI IDs (Darren Hart)
     - Add AMD CZ SATA and SMBus PCI IDs (Shane Huang)
     - Work around Ivytown NTB BAR size issue (Jon Mason)
     - Detect invalid initial BAR values (Kevin Hao)
     - Add pcibios_release_device() (Sebastian Ott)
     - Fix powerpc & sparc PCI_UNKNOWN power state usage (Bjorn Helgaas)
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Merge tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "PCI device hotplug
    - Add pci_alloc_dev() interface (Gu Zheng)
    - Add pci_bus_get()/put() for reference counting (Jiang Liu)
    - Fix SR-IOV reference count issues (Jiang Liu)
    - Remove unused acpi_pci_roots list (Jiang Liu)

  MSI
    - Conserve interrupt resources on x86 (Alexander Gordeev)

  AER
    - Force fatal severity when component has been reset (Betty Dall)
    - Reset link below Root Port as well as Downstream Port (Betty Dall)
    - Fix "Firmware first" flag setting (Bjorn Helgaas)
    - Don't parse HEST for non-PCIe devices (Bjorn Helgaas)

  ASPM
    - Warn when we can't disable ASPM as driver requests (Bjorn Helgaas)

  Miscellaneous
    - Add CircuitCo PCI IDs (Darren Hart)
    - Add AMD CZ SATA and SMBus PCI IDs (Shane Huang)
    - Work around Ivytown NTB BAR size issue (Jon Mason)
    - Detect invalid initial BAR values (Kevin Hao)
    - Add pcibios_release_device() (Sebastian Ott)
    - Fix powerpc & sparc PCI_UNKNOWN power state usage (Bjorn Helgaas)"

* tag 'pci-v3.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (51 commits)
  MAINTAINERS: Add ACPI folks for ACPI-related things under drivers/pci
  PCI: Add CircuitCo vendor ID and subsystem ID
  PCI: Use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM)
  PCI: Return early on allocation failures to unindent mainline code
  PCI: Simplify IOV implementation and fix reference count races
  PCI: Drop redundant setting of bus->is_added in virtfn_add_bus()
  unicore32/PCI: Remove redundant call of pci_bus_add_devices()
  m68k/PCI: Remove redundant call of pci_bus_add_devices()
  PCI / ACPI / PM: Use correct power state strings in messages
  PCI: Fix comment typo for pcie_pme_remove()
  PCI: Rename pci_release_bus_bridge_dev() to pci_release_host_bridge_dev()
  PCI: Fix refcount issue in pci_create_root_bus() error recovery path
  ia64/PCI: Clean up pci_scan_root_bus() usage
  PCI/AER: Reset link for devices below Root Port or Downstream Port
  ACPI / APEI: Force fatal AER severity when component has been reset
  PCI/AER: Remove "extern" from function declarations
  PCI/AER: Move AER severity defines to aer.h
  PCI/AER: Set dev->__aer_firmware_first only for matching devices
  PCI/AER: Factor out HEST device type matching
  PCI/AER: Don't parse HEST table for non-PCIe devices
  ...
2013-07-03 16:31:35 -07:00
Rafael J. Wysocki
bdc8f09685 Merge branch 'acpi-assorted'
* acpi-assorted:
  ACPI / EC: Add HP Folio 13 to ec_dmi_table in order to skip DSDT scan
  ACPI: Add CMOS RTC Operation Region handler support
  ACPI: Remove unused flags in acpi_device_flags
  ACPI: Remove useless initializers
  ACPI / battery: Make sure all spaces are in correct places
  ACPI: add _STA evaluation at do_acpi_find_child()
  ACPI / EC: access user space with get_user()/put_user()
2013-06-28 13:00:38 +02:00
Rafael J. Wysocki
3b4550e0e0 Merge branch 'acpi-pm'
* acpi-pm:
  ACPI / PM: Rework and clean up acpi_dev_pm_get_state()
  ACPI / PM: Replace ACPI_STATE_D3 with ACPI_STATE_D3_COLD in device_pm.c
  ACPI / PM: Rename function acpi_device_power_state() and make it static
  ACPI / PM: acpi_processor_suspend() can be static
  xen / ACPI / sleep: Register an acpi_suspend_lowlevel callback.
  x86 / ACPI / sleep: Provide registration for acpi_suspend_lowlevel.
2013-06-28 12:58:30 +02:00
Rafael J. Wysocki
80338681bb Merge branch 'acpica'
* acpica: (21 commits)
  ACPICA: Update version to 20130517
  ACPICA: _CST repair: Handle null package entries
  ACPICA: Add several repairs for _CST predefined name
  ACPICA: Move _PRT repair into the standard complex repair module
  ACPICA: Clear events initialized flag upon event component termination
  ACPICA: Fix possible memory leak in GPE init error path
  ACPICA: ACPICA Termination: Delete global lock pending lock
  ACPICA: Update interface to acpi_ut_valid_acpi_name()
  ACPICA: Do not use extended sleep registers unless HW-reduced bit is set
  ACPICA: Split table print utilities to a new a separate file
  ACPICA: Add option to disable loading of SSDTs from the RSDT/XSDT
  ACPICA: Standardize all switch() blocks
  ACPICA: Split internal error msg routines to a separate file
  ACPICA: Split buffer dump routines into separate file
  ACPICA: Update version to 20130418
  ACPICA: Update for "orphan" embedded controller _REG method support
  ACPICA: Remove unused macros, no functional change
  ACPICA: Predefined name support: Remove unused local variable
  ACPICA: Add argument typechecking for all predefined ACPI names
  ACPICA: Add BIOS error interface for predefined name validation support
  ...
2013-06-28 12:58:14 +02:00
Rafael J. Wysocki
a204dbc61b Merge branch 'acpi-hotplug'
* acpi-hotplug:
  ACPI: Do not use CONFIG_ACPI_HOTPLUG_MEMORY_MODULE
  ACPI / cpufreq: Add ACPI processor device IDs to acpi-cpufreq
  Memory hotplug: Move alternative function definitions to header
  ACPI / processor: Fix potential NULL pointer dereference in acpi_processor_add()
  Memory hotplug / ACPI: Simplify memory removal
  ACPI / scan: Add second pass of companion offlining to hot-remove code
  Driver core / MM: Drop offline_memory_block()
  ACPI / processor: Pass processor object handle to acpi_bind_one()
  ACPI: Drop removal_type field from struct acpi_device
  Driver core / memory: Simplify __memory_block_change_state()
  ACPI / processor: Initialize per_cpu(processors, pr->id) properly
  CPU: Fix sysfs cpu/online of offlined CPUs
  Driver core: Introduce offline/online callbacks for memory blocks
  ACPI / memhotplug: Bind removable memory blocks to ACPI device nodes
  ACPI / processor: Use common hotplug infrastructure
  ACPI / hotplug: Use device offline/online for graceful hot-removal
  Driver core: Use generic offline/online for CPU offline/online
  Driver core: Add offline/online device operations
2013-06-28 12:58:05 +02:00
Rafael J. Wysocki
21a31013f7 ACPI / dock / PCI: Synchronous handling of dock events for PCI devices
The interactions between the ACPI dock driver and the ACPI-based PCI
hotplug (acpiphp) are currently problematic because of ordering
issues during hot-remove operations.

First of all, the current ACPI glue code expects that physical
devices will always be deleted before deleting the companion ACPI
device objects.  Otherwise, acpi_unbind_one() will fail with a
warning message printed to the kernel log, for example:

[  185.026073] usb usb5: Oops, 'acpi_handle' corrupt
[  185.035150] pci 0000:1b:00.0: Oops, 'acpi_handle' corrupt
[  185.035515] pci 0000:18:02.0: Oops, 'acpi_handle' corrupt
[  180.013656]  port1: Oops, 'acpi_handle' corrupt

This means, in particular, that struct pci_dev objects have to
be deleted before the struct acpi_device objects they are "glued"
with.

Now, the following happens the during the undocking of an ACPI-based
dock station:
 1) hotplug_dock_devices() invokes registered hotplug callbacks to
    destroy physical devices associated with the ACPI device objects
    depending on the dock station.  It calls dd->ops->handler() for
    each of those device objects.
 2) For PCI devices dd->ops->handler() points to
    handle_hotplug_event_func() that queues up a separate work item
    to execute _handle_hotplug_event_func() for the given device and
    returns immediately.  That work item will be executed later.
 3) hotplug_dock_devices() calls dock_remove_acpi_device() for each
    device depending on the dock station.  This runs acpi_bus_trim()
    for each of them, which causes the underlying ACPI device object
    to be destroyed, but the work items queued up by
    handle_hotplug_event_func() haven't been started yet.
 4) _handle_hotplug_event_func() queued up in step 2) are executed
    and cause the above failure to happen, because the PCI devices
    they handle do not have the companion ACPI device objects any
    more (those objects have been deleted in step 3).

The possible breakage doesn't end here, though, because
hotplug_dock_devices() may return before at least some of the
_handle_hotplug_event_func() work items spawned by it have a
chance to complete and then undock() will cause _DCK to be
evaluated and that will cause the devices handled by the
_handle_hotplug_event_func() to go away possibly while they are
being accessed.

This means that dd->ops->handler() for PCI devices should not point
to handle_hotplug_event_func().  Instead, it should point to a
function that will do the work of _handle_hotplug_event_func()
synchronously.  For this reason, introduce such a function,
hotplug_event_func(), and modity acpiphp_dock_ops to point to
it as the handler.

Unfortunately, however, this is not sufficient, because if the dock
code were not changed further, hotplug_event_func() would now
deadlock with hotplug_dock_devices() that called it, since it would
run unregister_hotplug_dock_device() which in turn would attempt to
acquire the dock station's hp_lock mutex already acquired by
hotplug_dock_devices().

To resolve that deadlock use the observation that
unregister_hotplug_dock_device() won't need to acquire hp_lock
if PCI bridges the devices on the dock station depend on are
prevented from being removed prematurely while the first loop in
hotplug_dock_devices() is in progress.

To make that possible, introduce a mechanism by which the callers of
register_hotplug_dock_device() can provide "init" and "release"
routines that will be executed, respectively, during the addition
and removal of the physical device object associated with the
given ACPI device handle.  Make acpiphp use two new functions,
acpiphp_dock_init() and acpiphp_dock_release(), that call
get_bridge() and put_bridge(), respectively, on the acpiphp bridge
holding the given device, for this purpose.

In addition to that, remove the dock station's list of
"hotplug devices" and make the dock code always walk the whole list
of "dependent devices" instead in such a way that the loops in
hotplug_dock_devices() and dock_event() (replacing the loops over
"hotplug devices") will take references to the list entries that
register_hotplug_dock_device() has been called for.  That prevents
the "release" routines associated with those entries from being
called while the given entry is being processed and for PCI
devices this means that their bridges won't be removed (by a
concurrent thread) while hotplug_event_func() handling them is
being executed.

This change is based on two earlier patches from Jiang Liu.

References: https://bugzilla.kernel.org/show_bug.cgi?id=59501
Reported-and-tested-by: Alexander E. Patrakov <patrakov@gmail.com>
Tracked-down-by: Jiang Liu <jiang.liu@huawei.com>
Tested-by: Illya Klymov <xanf@xanf.me>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: 3.9+ <stable@vger.kernel.org>
2013-06-24 11:22:53 +02:00
Bob Moore
069189a1c8 ACPICA: Update version to 20130517
Version 20130517.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-20 01:44:35 +02:00
Rafael J. Wysocki
b9e95fc65e ACPI / LPSS: Power up LPSS devices during enumeration
Commit 7cd8407 (ACPI / PM: Do not execute _PS0 for devices without
_PSC during initialization) introduced a regression on some systems
with Intel Lynxpoint Low-Power Subsystem (LPSS) where some devices
need to be powered up during initialization, but their device objects
in the ACPI namespace have _PS0 and _PS3 only (without _PSC or power
resources).

To work around this problem, make the ACPI LPSS driver power up
devices it knows about by using a new helper function
acpi_device_fix_up_power() that does all of the necessary
sanity checks and calls acpi_dev_pm_explicit_set() to put the
device into D0.

Reported-and-tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-20 00:49:06 +02:00
Rafael J. Wysocki
b25c77efa7 ACPI / PM: Rename function acpi_device_power_state() and make it static
There is a name clash between function acpi_device_power_state()
defined in drivers/acpi/device_pm.c and structure type
acpi_device_power_state defined in include/acpi/acpi_bus.h, which
may be resolved by renaming the function.  Additionally, that
funtion may be made static, because it is not used anywhere outside
of the file it is defined in.

Rename acpi_device_power_state() to acpi_dev_pm_get_state(), which
better reflects its purpose, and make it static.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-19 23:37:08 +02:00
Toshi Kani
358b4b35c8 ACPI: Remove unused flags in acpi_device_flags
suprise_removal_ok and performance_manageable in struct
acpi_device_flags are not used by any code.  So, remove
them.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-19 23:34:58 +02:00
Lv Zheng
b75dd2977f ACPICA: Add option to disable loading of SSDTs from the RSDT/XSDT
Optionally do not load any SSDTs from the RSDT/XSDT during
initialization.  This can be useful for overriding SSDTs
using DSDT overriding, thus useful for debugging ACPI
problems on some machines.  Lv Zheng. ACPICA BZ 1005.

References: https://bugs.acpica.org/show_bug.cgi?id=1005
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-16 00:55:40 +02:00
Bob Moore
67a9277496 ACPICA: Update version to 20130418
Version 20130418.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-01 21:54:31 +02:00
Lv Zheng
d835e7f4f8 ACPICA: Remove unused macros, no functional change
Remove several unused/duplicated macros in acoutput.h Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-01 21:54:31 +02:00
Bob Moore
29a241cc02 ACPICA: Add argument typechecking for all predefined ACPI names
Fully implements typechecking on all incoming arguments for all
predefined names. This ensures that ACPI-related drivers are
passing the correct number of arguments, each of the correct
object type.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-01 21:54:30 +02:00
Rafael J. Wysocki
2e199192df ACPI: Drop removal_type field from struct acpi_device
The ACPI processor driver was the only user of the removal_type
field in struct acpi_device, but it doesn't use that field any more
after recent changes.  Thus, removal_type has no more users, so drop
it along with the associated data type.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
2013-06-01 21:37:09 +02:00
Jiang Liu
bbebed6423 PCI/ACPI: Remove unused global list acpi_pci_roots
Now the global list acpi_pci_roots pci_root.c is useless, remove it.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Len Brown <lenb@kernel.org>
2013-05-29 14:35:49 -06:00
Rafael J. Wysocki
ec4602a958 ACPI / PM: Allow device power states to be used for CONFIG_PM unset
Currently, drivers/acpi/device_pm.c depends on CONFIG_PM and all of
the functions defined in there are replaced with static inline stubs
if that option is unset.  However, CONFIG_PM means, roughly, "runtime
PM or suspend/hibernation support" and some of those functions are
useful regardless of that.  For example, they are used by the ACPI
fan driver for controlling fans and acpi_device_set_power() is called
during device removal.  Moreover, device initialization may depend on
setting device power states properly.

For these reasons, make the routines manipulating ACPI device power
states defined in drivers/acpi/device_pm.c available for CONFIG_PM
unset too.

Reported-by: Zhang Rui <rui.zhang@intel.com>
Reported-and-tested-by: Michel Lespinasse <walken@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: 3.9+ <stable@vger.kernel.org>
2013-05-22 00:19:28 +02:00
Rafael J. Wysocki
ac212b6980 ACPI / processor: Use common hotplug infrastructure
Split the ACPI processor driver into two parts, one that is
non-modular, resides in the ACPI core and handles the enumeration
and hotplug of processors and one that implements the rest of the
existing processor driver functionality.

The non-modular part uses an ACPI scan handler object to enumerate
processors on the basis of information provided by the ACPI namespace
and to hook up with the common ACPI hotplug infrastructure.  It also
populates the ACPI handle of each processor device having a
corresponding object in the ACPI namespace, which allows the driver
proper to bind to those devices, and makes the driver bind to them
if it is readily available (i.e. loaded) when the scan handler's
.attach() routine is running.

There are a few reasons to make this change.

First, switching the ACPI processor driver to using the common ACPI
hotplug infrastructure reduces code duplication and size considerably,
even though a new file is created along with a header comment etc.

Second, since the common hotplug code attempts to offline devices
before starting the (non-reversible) removal procedure, it will abort
(and possibly roll back) hot-remove operations involving processors
if cpu_down() returns an error code for one of them instead of
continuing them blindly (if /sys/firmware/acpi/hotplug/force_remove
is unset).  That is a more desirable behavior than what the current
code does.

Finally, the separation of the scan/hotplug part from the driver
proper makes it possible to simplify the driver's .remove() routine,
because it doesn't need to worry about the possible cleanup related
to processor removal any more (the scan/hotplug part is responsible
for that now) and can handle device removal and driver removal
symmetricaly (i.e. as appropriate).

Some user-visible changes in sysfs are made (for example, the
'sysdev' link from the ACPI device node to the processor device's
directory is gone and a 'physical_node' link is present instead
and a corresponding 'firmware_node' is present in the processor
device's directory, the processor driver is now visible under
/sys/bus/cpu/drivers/ and bound to the processor device), but
that shouldn't affect the functionality that users care about
(frequency scaling, C-states and thermal management).

Tested on my venerable Toshiba Portege R500.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
2013-05-12 14:14:32 +02:00
Rafael J. Wysocki
683058e315 ACPI / hotplug: Use device offline/online for graceful hot-removal
Modify the generic ACPI hotplug code to be able to check if devices
scheduled for hot-removal may be gracefully removed from the system
using the device offline/online mechanism introduced previously.

Namely, make acpi_scan_hot_remove() handling device hot-removal call
device_offline() for all physical companions of the ACPI device nodes
involved in the operation and check the results.  If any of the
device_offline() calls fails, the function will not progress to the
removal phase (which cannot be aborted), unless its (new) force
argument is set (in case of a failing offline it will put the devices
offlined by it back online).

In support of 'forced' device hot-removal, add a new sysfs attribute
'force_remove' that will reside under /sys/firmware/acpi/hotplug/.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
2013-05-12 14:14:24 +02:00
Jan-Simon Möller
36200af867 ACPI: Fix section to __init. Align with usage in acpixf.h
Fixes warning during compilation with clang.

[rjw: Subject and changelog]
Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-05-12 14:03:14 +02:00