Eric Lee / smarc-fsl-linux-kernel

11 Dec, 2010

1 commit

  • d90aa92c0   acpi: fix _OSI string setup regression ... Browse Code »

    commit b0ed7a91(ACPICA/ACPI: Add new host interfaces for _OSI suppor)
    introduced a regression that _OSI string setup fails.

    There are 2 paths to setup _OSI string.

    DMI:
    acpi_dmi_osi_linux -> set_osi_linux -> acpi_osi_setup -> copy _OSI
    string to osi_setup_string

    Boot command line:
    acpi_osi_setup -> copy _OSI string to osi_setup_string

    Later, acpi_osi_setup_late will be called to handle osi_setup_string.
    If _OSI string is "Linux" or "!Linux", then the call path is,

    acpi_osi_setup_late -> acpi_cmdline_osi_linux -> set_osi_linux ->
    acpi_osi_setup -> copy _OSI string to osi_setup_string

    This actually never installs _OSI string(acpi_install_interface not
    called), but just copy the _OSI string to osi_setup_string.

    This patch fixes the regression.

    Reported-and-tested-by: Lukas Hejtmanek
    Signed-off-by: Lin Ming
    Signed-off-by: Len Brown

    Lin Ming
     

27 Oct, 2010

1 commit

25 Oct, 2010

1 commit

  • 297185212   ACPI: Add interfaces for ioremapping/iounmapping ACPI registers ... Browse Code »
    44

    Add remapping and unmapping interfaces for ACPI registers that are
    backed by memory mapped I/O (MMIO). These interfaces, along with
    the MMIO remapping list, enable accesses of such registers from within
    interrupt context.

    ACPI Generic Address Structure (GAS) reference (ACPI's fixed/generic
    hardware registers use the GAS format):
    ACPI Specification, Revision 4.0, Section 5.2.3.1, "Generic Address
    Structure".

    Signed-off-by: Myron Stowe
    Signed-off-by: Len Brown

    Myron Stowe
     

20 Oct, 2010

1 commit

25 Aug, 2010

1 commit

  • 75fb60f26   ACPI/PCI: Negotiate _OSC control bits before requesting them ... Browse Code »

    It is possible that the BIOS will not grant control of all _OSC
    features requested via acpi_pci_osc_control_set(), so it is
    recommended to negotiate the final set of _OSC features with the
    query flag set before calling _OSC to request control of these
    features.

    To implement it, rework acpi_pci_osc_control_set() so that the caller
    can specify the mask of _OSC control bits to negotiate and the mask
    of _OSC control bits that are absolutely necessary to it. Then,
    acpi_pci_osc_control_set() will run _OSC queries in a loop until
    the mask of _OSC control bits returned by the BIOS is equal to the
    mask passed to it. Also, before running the _OSC request
    acpi_pci_osc_control_set() will check if the caller's required
    control bits are present in the final mask.

    Using this mechanism we will be able to avoid situations in which the
    BIOS doesn't grant control of certain _OSC features, because they
    depend on some other _OSC features that have not been requested.

    Signed-off-by: Rafael J. Wysocki
    Signed-off-by: Jesse Barnes

    Rafael J. Wysocki
     

25 Jul, 2010

1 commit

  • 72ad5d77f   ACPI / Sleep: Allow the NVS saving to be skipped during suspend to RAM ... Browse Code »

    Commit 2a6b69765ad794389f2fc3e14a0afa1a995221c2
    (ACPI: Store NVS state even when entering suspend to RAM) caused the
    ACPI suspend code save the NVS area during suspend and restore it
    during resume unconditionally, although it is known that some systems
    need to use acpi_sleep=s4_nonvs for hibernation to work. To allow
    the affected systems to avoid saving and restoring the NVS area
    during suspend to RAM and resume, introduce kernel command line
    option acpi_sleep=nonvs and make acpi_sleep=s4_nonvs work as its
    alias temporarily (add acpi_sleep=s4_nonvs to the feature removal
    file).

    Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16396 .

    Signed-off-by: Rafael J. Wysocki
    Reported-and-tested-by: tomas m
    Signed-off-by: Len Brown

    Rafael J. Wysocki
     

29 May, 2010

1 commit

  • 9a90e0985   Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 ... Browse Code »

    * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (27 commits)
    ACPI: Don't let acpi_pad needlessly mark TSC unstable
    drivers/acpi/sleep.h: Checkpatch cleanup
    ACPI: Minor cleanup eliminating redundant PMTIMER_TICKS to NS conversion
    ACPI: delete unused c-state promotion/demotion data strucutures
    ACPI: video: fix acpi_backlight=video
    ACPI: EC: Use kmemdup
    drivers/acpi: use kasprintf
    ACPI, APEI, EINJ injection parameters support
    Add x64 support to debugfs
    ACPI, APEI, Use ERST for persistent storage of MCE
    ACPI, APEI, Error Record Serialization Table (ERST) support
    ACPI, APEI, Generic Hardware Error Source memory error support
    ACPI, APEI, UEFI Common Platform Error Record (CPER) header
    Unified UUID/GUID definition
    ACPI Hardware Error Device (PNP0C33) support
    ACPI, APEI, PCIE AER, use general HEST table parsing in AER firmware_first setup
    ACPI, APEI, Document for APEI
    ACPI, APEI, EINJ support
    ACPI, APEI, HEST table parsing
    ACPI, APEI, APEI supporting infrastructure
    ...

    Linus Torvalds
     

28 May, 2010

1 commit

  • 70dd6beac   hwmon: (asus_atk0110) Don't load if ACPI resources aren't enforced ... Browse Code »

    When the user passes the kernel parameter acpi_enforce_resources=lax,
    the ACPI resources are no longer protected, so a native driver can
    make use of them. In that case, we do not want the asus_atk0110 to be
    loaded. Unfortunately, this driver loads automatically due to its
    MODULE_DEVICE_TABLE, so the user ends up with two drivers loaded for
    the same device - this is bad.

    So I suggest that we prevent the asus_atk0110 driver from loading if
    acpi_enforce_resources=lax.

    Signed-off-by: Jean Delvare
    Acked-by: Luca Tettamanti
    Cc: Len Brown

    Jean Delvare
     

12 May, 2010

1 commit

  • b6dacf63e   ACPI: Unconditionally set SCI_EN on resume ... Browse Code »

    The ACPI spec tells us that the firmware will reenable SCI_EN on resume.
    Reality disagrees in some cases. The ACPI spec tells us that the only way
    to set SCI_EN is via an SMM call.
    https://bugzilla.kernel.org/show_bug.cgi?id=13745 shows us that doing so
    may break machines. Tracing the ACPI calls made by Windows shows that it
    unconditionally sets SCI_EN on resume with a direct register write, and
    therefore the overwhelming probability is that everything is fine with
    this behaviour.

    Signed-off-by: Matthew Garrett
    Tested-by: Rafael J. Wysocki
    Signed-off-by: Len Brown

    Matthew Garrett
     

05 May, 2010

2 commits

  • 9a0a91bb5   x86, acpi/irq: Teach acpi_get_override_irq to take a gsi not an isa_irq ... Browse Code »

    In perverse acpi implementations the isa irqs are not identity mapped
    to the first 16 gsi. Furthermore at least the extended interrupt
    resource capability may return gsi's and not isa irqs. So since
    what we get from acpi is a gsi teach acpi_get_overrride_irq to
    operate on a gsi instead of an isa_irq.

    Signed-off-by: Eric W. Biederman
    LKML-Reference:
    Signed-off-by: H. Peter Anvin

    Eric W. Biederman
     
  • 2c2df8418   x86, acpi/irq: Introduce apci_isa_irq_to_gsi ... Browse Code »

    There are a number of cases where the current code makes the assumption
    that isa irqs identity map to the first 16 acpi global system intereupts.
    In most instances that assumption is correct as that is the required
    behaviour in dual i8259 mode and the default behavior in ioapic mode.

    However there are some systems out there that take advantage of acpis
    interrupt remapping for the isa irqs to have a completely different
    mapping of isa_irq to gsi.

    Introduce acpi_isa_irq_to_gsi to perform this mapping explicitly in the
    code that needs it. Initially this will be just the current assumed
    identity mapping to ensure it's introduction does not cause regressions.

    Signed-off-by: Eric W. Biederman
    LKML-Reference:
    Signed-off-by: H. Peter Anvin

    Eric W. Biederman
     

07 Jan, 2010

1 commit

31 Dec, 2009

1 commit

  • d7f0eea9e   ACPI: introduce kernel parameter acpi_sleep=sci_force_enable ... Browse Code »

    Introduce kernel parameter acpi_sleep=sci_force_enable

    some laptop requires SCI_EN being set directly on resume,
    or else they hung somewhere in the resume code path.

    We already have a blacklist for these laptops but we still need
    this option, especially when debugging some suspend/resume problems,
    in case there are systems that need this workaround and are not yet
    in the blacklist.

    Signed-off-by: Zhang Rui
    Acked-by: Rafael J. Wysocki
    Signed-off-by: Len Brown

    Zhang Rui
     

17 Dec, 2009

4 commits

10 Dec, 2009

1 commit

19 Sep, 2009

3 commits

29 Aug, 2009

1 commit

  • e55a5999f   ACPI: Handle CONFIG_ACPI=n better from linux/acpi.h ... Browse Code »

    linux/acpi.h is the top level header for interfacing
    with the ACPI sub-system, so acpi_disabled should be
    up there instead of down in asm/acpi.h -- particularly
    since asm/acpi.h doesn't exist for all architectures.

    Same story for acpi_table_parse(), which is a top-level
    API to Linux/ACPI.

    This is necessary for building some code that
    used to always depend on CONFIG_ACPI=y, but will soon
    also need to build with CONFIG_ACPI=n.

    Signed-off-by: Feng Tang
    Signed-off-by: Len Brown

    Feng Tang
     

24 Jun, 2009

1 commit

13 Jun, 2009

2 commits

28 Apr, 2009

1 commit

  • a2f809b08   irq: change ACPI GSI APIs to also take a device argument ... Browse Code »

    We want to use dev_to_node() later on, to be aware of the 'home node'
    of the GSI in question.

    [ Impact: cleanup, prepare the IRQ code to be more NUMA aware ]

    Signed-off-by: Yinghai Lu
    Acked-by: Len Brown
    Cc: Andrew Morton
    Cc: Suresh Siddha
    Cc: "Eric W. Biederman"
    Cc: Rusty Russell
    Cc: Len Brown
    Cc: Bjorn Helgaas
    Cc: Tony Luck
    Cc: linux-acpi@vger.kernel.org
    Cc: linux-ia64@vger.kernel.org
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Yinghai Lu
     

21 Apr, 2009

1 commit

05 Apr, 2009

1 commit

04 Apr, 2009

1 commit

  • 7237d3de7   x86, ACPI: add support for x2apic ACPI extensions ... Browse Code »

    All logical processors with APIC ID values of 255 and greater will have their
    APIC reported through Processor X2APIC structure (type-9 entry type) and all
    logical processors with APIC ID less than 255 will have their APIC reported
    through legacy Processor Local APIC (type-0 entry type) only. This is the
    same case even for NMI structure reporting.

    The Processor X2APIC Affinity structure provides the association between the
    X2APIC ID of a logical processor and the proximity domain to which the logical
    processor belongs.

    For OSPM, Procssor IDs outside the 0-254 range are to be declared as Device()
    objects in the ACPI namespace.

    Signed-off-by: Suresh Siddha
    Signed-off-by: Len Brown

    Suresh Siddha
     

02 Apr, 2009

1 commit

  • e76e5b2c6   Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 ... Browse Code »

    * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (88 commits)
    PCI: fix HT MSI mapping fix
    PCI: don't enable too much HT MSI mapping
    x86/PCI: make pci=lastbus=255 work when acpi is on
    PCI: save and restore PCIe 2.0 registers
    PCI: update fakephp for bus_id removal
    PCI: fix kernel oops on bridge removal
    PCI: fix conflict between SR-IOV and config space sizing
    powerpc/PCI: include pci.h in powerpc MSI implementation
    PCI Hotplug: schedule fakephp for feature removal
    PCI Hotplug: rename legacy_fakephp to fakephp
    PCI Hotplug: restore fakephp interface with complete reimplementation
    PCI: Introduce /sys/bus/pci/devices/.../rescan
    PCI: Introduce /sys/bus/pci/devices/.../remove
    PCI: Introduce /sys/bus/pci/rescan
    PCI: Introduce pci_rescan_bus()
    PCI: do not enable bridges more than once
    PCI: do not initialize bridges more than once
    PCI: always scan child buses
    PCI: pci_scan_slot() returns newly found devices
    PCI: don't scan existing devices
    ...

    Fix trivial append-only conflict in Documentation/feature-removal-schedule.txt

    Linus Torvalds
     

20 Mar, 2009

1 commit

  • 9f5404d8e   PCI/ACPI: rename pci_osc_control_set() ... Browse Code »

    - Rename pci_osc_control_set() to acpi_pci_osc_control_set() according
    to the other API names in drivers/acpi/pci_root.c.

    - Move _OSC related definitions to include/linux/acpi.h because _OSC
    related API is implemented in drivers/acpi/pci_root.c now.

    Signed-off-by: Kenji Kaneshige
    Reviewed-by: Andrew Patterson
    Tested-by: Andrew Patterson
    Signed-off-by: Jesse Barnes

    Kenji Kaneshige
     

16 Feb, 2009

1 commit

  • 970ec1a82   [IA64] fix __apci_unmap_table ... Browse Code »

    Impact: fix build error

    to fix:

    tip/arch/ia64/kernel/acpi.c:203: error: conflicting types for '__acpi_unmap_table'
    tip/include/linux/acpi.h:82: error: previous declaration of '__acpi_unmap_table' was here
    tip/arch/ia64/kernel/acpi.c:203: error: conflicting types for '__acpi_unmap_table'
    tip/include/linux/acpi.h:82: error: previous declaration of '__acpi_unmap_table' was here

    Signed-off-by: Yinghai Lu
    Cc: Jeremy Fitzhardinge
    Signed-off-by: Ingo Molnar

    Yinghai Lu
     

09 Feb, 2009

1 commit

  • 7d97277b7   acpi/x86: introduce __apci_map_table, v4 ... Browse Code »

    to prevent wrongly overwriting fixmap that still want to use.

    ACPI used to rely on low mappings being all linearly mapped and
    grew a habit: it never really unmapped certain kinds of tables
    after use.

    This can cause problems - for example the hypothetical case
    when some spurious access still references it.

    v2: remove prev_map and prev_size in __apci_map_table
    v3: let acpi_os_unmap_memory() call early_iounmap too, so remove extral calling to
    early_acpi_os_unmap_memory
    v4: fix typo in one acpi_get_table_with_size calling

    Signed-off-by: Yinghai Lu
    Acked-by: Len Brown
    Signed-off-by: Ingo Molnar

    Yinghai Lu
     

09 Jan, 2009

1 commit

31 Dec, 2008

1 commit

19 Dec, 2008

1 commit

12 Nov, 2008

1 commit

08 Nov, 2008

1 commit

  • c3d6de698   ACPI video: if no ACPI backlight support, use vendor drivers ... Browse Code »

    If an ACPI graphics device supports backlight brightness functions (cmp. with
    latest ACPI spec Appendix B), let the ACPI video driver control backlight and
    switch backlight control off in vendor specific ACPI drivers (asus_acpi,
    thinkpad_acpi, eeepc, fujitsu_laptop, msi_laptop, sony_laptop, acer-wmi).

    Currently it is possible to load above drivers and let both poke on the
    brightness HW registers, the video and vendor specific ACPI drivers -> bad.

    This patch provides the basic support to check for BIOS capabilities before
    driver loading time. Driver specific modifications are in separate follow up
    patches.

    "acpi_backlight=vendor"
    Prever vendor driver over ACPI driver for backlight.
    "acpi_backlight=video" (default)
    Prever ACPI driver over vendor driver for backlight.

    Signed-off-by: Thomas Renninger
    Acked-by: Zhang Rui
    Signed-off-by: Andi Kleen
    Signed-off-by: Len Brown

    Thomas Renninger
     

07 Nov, 2008

1 commit

  • 8950d89ac   ACPI: remove CONFIG_ACPI_EC ... Browse Code »

    Remove CONFIG_ACPI_EC. It was always set the same as CONFIG_ACPI,
    and it had no menu label, so there was no way to set it to anything
    other than "y".

    Per section 6.5.4 of the ACPI 3.0b specification,

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

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

    Signed-off-by: Bjorn Helgaas
    Acked-by: Alexey Starikovskiy
    Signed-off-by: Len Brown

    Bjorn Helgaas
     

11 Oct, 2008

1 commit

  • fa89b6089   ACPI: remove unused have_arch_parse_srat ... Browse Code »

    This was a workaround for 32bit numa SRAT processing, and we removed those
    workarounds, making 32 bit more like 64 bit. HAVE_ARCH_PARSE_SRAT is no
    longer defined anywhere.

    Signed-off-by: Yinghai Lu
    Signed-off-by: Andrew Morton
    Signed-off-by: Len Brown

    Yinghai Lu