Eric Lee / smarc-fsl-linux-kernel

23 Mar, 2016

1 commit

08 Apr, 2014

1 commit

  • 2aaf308b9   rapidio: rework device hierarchy and introduce mport class of devices ... Browse Code »

    This patch removes an artificial RapidIO bus root device and establishes
    actual device hierarchy by providing reference to real parent devices.
    It also introduces device class for RapidIO controller devices (on-chip
    or an eternal bridge, known as "mport").

    Existing implementation was sufficient for SoC-based platforms that have
    a single RapidIO controller. With introduction of devices using
    multiple RapidIO controllers and PCIe-to-RapidIO bridges the old scheme
    is very limiting or does not work at all. The implemented changes allow
    to properly reference platform's local RapidIO mport devices and provide
    device details needed for upper layers.

    This change to RapidIO device hierarchy does not break any known
    existing kernel or user space interfaces.

    Signed-off-by: Alexandre Bounine
    Cc: Matt Porter
    Cc: Li Yang
    Cc: Kumar Gala
    Cc: Andre van Herk
    Cc: Stef van Os
    Cc: Jerry Jacobs
    Cc: Arno Tiemersma
    Cc: Rob Landley
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

17 Oct, 2013

1 commit

27 Sep, 2013

1 commit

04 Jul, 2013

1 commit

  • 3bdbb62fe   rapidio: add udev notification ... Browse Code »

    Add RapidIO-specific modalias generation to enable udev notifications
    about RapidIO-specific events.

    The RapidIO modalias string format is shown below:

    "rapidio:vNNNNdNNNNavNNNNadNNNN"

    Where:
    v - Device Vendor ID (16 bit),
    d - Device ID (16 bit),
    av - Assembly Vendor ID (16 bit),
    ad - Assembly ID (16 bit),

    as they are reported in corresponding Capability Registers (CARs)
    of each RapidIO device.

    Signed-off-by: Alexandre Bounine
    Cc: Matt Porter
    Cc: Li Yang
    Cc: Kumar Gala
    Cc: Andre van Herk
    Cc: Micha Nelissen
    Cc: Stef van Os
    Cc: Jean Delvare
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

25 May, 2013

2 commits

  • bc8fcfea1   rapidio: add enumeration/discovery start from user space ... Browse Code »

    Add RapidIO enumeration/discovery start from user space. User space
    start allows to defer RapidIO fabric scan until the moment when all
    participating endpoints are initialized avoiding mandatory synchronized
    start of all endpoints (which may be challenging in systems with large
    number of RapidIO endpoints).

    Signed-off-by: Alexandre Bounine
    Cc: Matt Porter
    Cc: Li Yang
    Cc: Kumar Gala
    Cc: Andre van Herk
    Cc: Micha Nelissen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     
  • a11650e11   rapidio: make enumeration/discovery configurable ... Browse Code »

    Systems that use RapidIO fabric may need to implement their own
    enumeration and discovery methods which are better suitable for needs of
    a target application.

    The following set of patches is intended to simplify process of
    introduction of new RapidIO fabric enumeration/discovery methods.

    The first patch offers ability to add new RapidIO enumeration/discovery
    methods using kernel configuration options. This new configuration
    option mechanism allows to select statically linked or modular
    enumeration/discovery method(s) from the list of existing methods or use
    external module(s).

    This patch also updates the currently existing enumeration/discovery
    code to be used as a statically linked or modular method.

    The corresponding configuration option is named "Basic
    enumeration/discovery" method. This is the only one configuration
    option available today but new methods are expected to be introduced
    after adoption of provided patches.

    The second patch address a long time complaint of RapidIO subsystem
    users regarding fabric enumeration/discovery start sequence. Existing
    implementation offers only a boot-time enumeration/discovery start which
    requires synchronized boot of all endpoints in RapidIO network. While
    it works for small closed configurations with limited number of
    endpoints, using this approach in systems with large number of endpoints
    is quite challenging.

    To eliminate requirement for synchronized start the second patch
    introduces RapidIO enumeration/discovery start from user space.

    For compatibility with the existing RapidIO subsystem implementation,
    automatic boot time enumeration/discovery start can be configured in by
    specifying "rio-scan.scan=1" command line parameter if statically linked
    basic enumeration method is selected.

    This patch:

    Rework to implement RapidIO enumeration/discovery method selection
    combined with ability to use enumeration/discovery as a kernel module.

    This patch adds ability to introduce new RapidIO enumeration/discovery
    methods using kernel configuration options. Configuration option
    mechanism allows to select statically linked or modular
    enumeration/discovery method from the list of existing methods or use
    external modules. If a modular enumeration/discovery is selected each
    RapidIO mport device can have its own method attached to it.

    The existing enumeration/discovery code was updated to be used as
    statically linked or modular method. This configuration option is named
    "Basic enumeration/discovery" method.

    Several common routines have been moved from rio-scan.c to make them
    available to other enumeration methods and reduce number of exported
    symbols.

    Signed-off-by: Alexandre Bounine
    Cc: Matt Porter
    Cc: Li Yang
    Cc: Kumar Gala
    Cc: Andre van Herk
    Cc: Micha Nelissen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

28 Oct, 2010

1 commit

  • 2c70f022e   rapidio: fix RapidIO sysfs hierarchy ... Browse Code »

    This set of RapidIO patches extends support for standard error recovery
    mechanism and adds new IDT Gen2 sRIO switch devices - CPS-1848 and
    CPS-1616. Implementation of the standard error-stopped state recovery
    mechanism (as defined by the RapidIO specification) is required for the
    new switches.

    Version 2 of this set of patches addresses received comments and fixes an
    error notification setup issue found in the idt_gen2.c after the first
    version was released.

    This patch:

    Make RapidIO devices appear in /sys/devices/rapidio directory instead of
    top of /sys/devices directory.

    Signed-off-by: Alexandre Bounine
    Cc: Thomas Moll
    Cc: Matt Porter
    Cc: Li Yang
    Cc: Kumar Gala
    Cc: Micha Nelissen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

25 Mar, 2009

1 commit

07 Jan, 2009

1 commit

  • d3635abfe   rapidio: remove excess kernel-doc notation ... Browse Code »

    Remove excess kernel-doc notation from rio header and driver:

    Warning(include/linux/rio_drv.h:399): Excess function parameter or struct member 'buffer' description in 'rio_get_inb_message'

    Signed-off-by: Randy Dunlap
    Cc: Matt Porter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Randy Dunlap
     

11 Jul, 2008

1 commit

04 Mar, 2008

1 commit

14 Jan, 2006

1 commit

07 Nov, 2005

1 commit

  • 394b701ce   [PATCH] RapidIO support: core base ... Browse Code »

    Adds a RapidIO subsystem to the kernel. RIO is a switched fabric interconnect
    used in higher-end embedded applications. The curious can look at the specs
    over at http://www.rapidio.org

    The core code implements enumeration/discovery, management of
    devices/resources, and interfaces for RIO drivers.

    There's a lot more to do to take advantages of all the hardware features.
    However, this should provide a good base for folks with RIO hardware to start
    contributing.

    Signed-off-by: Matt Porter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Matt Porter