Eric Lee / smarc-fsl-linux-kernel

02 Sep, 2016

1 commit

03 Aug, 2016

5 commits

  • e519685de   rapidio/tsi721: add messaging mbox selector parameter ... Browse Code »

    Add module parameter to allow load time configuration of available
    RapidIO messaging mailboxes (MBOX1 - MBOX4).

    Having a messaging MBOX selector mask allows to define which MBOXes are
    controlled by the mport device driver and reserve some of them for
    direct use by other drivers.

    Link: http://lkml.kernel.org/r/1469125134-16523-7-git-send-email-alexandre.bounine@idt.com
    Signed-off-by: Alexandre Bounine
    Tested-by: Barry Wood
    Cc: Matt Porter
    Cc: Andre van Herk
    Cc: Barry Wood
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     
  • cb782cdd2   rapidio/tsi721: add PCIe MRRS override parameter ... Browse Code »

    Add PCIe Maximum Read Request Size (MRRS) adjustment parameter to allow
    users to override configuration register value set during PCIe bus
    initialization.

    Performance of Tsi721 device as PCIe bus master can be improved if MRRS
    is set to its maximum value (4096 bytes). Some platforms have
    limitations for supported MRRS and therefore the default value should be
    preserved, unless it is known that given platform supports full set of
    MRRS values defined by PCI Express specification.

    Link: http://lkml.kernel.org/r/1469125134-16523-6-git-send-email-alexandre.bounine@idt.com
    Signed-off-by: Alexandre Bounine
    Cc: Matt Porter
    Cc: Andre van Herk
    Cc: Barry Wood
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     
  • 4498c31ad   rapidio/tsi721_dma: add channel mask and queue size parameters ... Browse Code »

    Add module parameters to allow load time configuration of DMA channels.

    Depending on application, performance of DMA data transfers can benefit
    from adjusted sizes of buffer descriptor ring and/or transaction
    requests queue.

    Having HW DMA channel selector mask allows to define which channels
    (from seven available) are controlled by the mport device driver and
    reserve some of them for direct use by other drivers.

    Link: http://lkml.kernel.org/r/1469125134-16523-5-git-send-email-alexandre.bounine@idt.com
    Signed-off-by: Alexandre Bounine
    Tested-by: Barry Wood
    Cc: Matt Porter
    Cc: Andre van Herk
    Cc: Barry Wood
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     
  • cca446d4c   rapidio/documentation: fix mangled paragraph in mport_cdev ... Browse Code »

    Minor edits to correct parameter description.

    This patch is applicable to kernel versions starting from v4.6.

    Link: http://lkml.kernel.org/r/1469125134-16523-3-git-send-email-alexandre.bounine@idt.com
    Signed-off-by: Alexandre Bounine
    Reported-by: Barry Wood
    Cc: Matt Porter
    Cc: Andre van Herk
    Cc: Barry Wood
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     
  • b6e8d4aa1   rapidio: add RapidIO channelized messaging driver ... Browse Code »

    Add channelized messaging driver to support native RapidIO messaging
    exchange between multiple senders/recipients on devices that use kernel
    RapidIO subsystem services.

    This device driver is the result of collaboration within the RapidIO.org
    Software Task Group (STG) between Texas Instruments, Prodrive
    Technologies, Nokia Networks, BAE and IDT. Additional input was
    received from other members of RapidIO.org.

    The objective was to create a character mode driver interface which
    exposes messaging capabilities of RapidIO endpoint devices (mports)
    directly to applications, in a manner that allows the numerous and
    varied RapidIO implementations to interoperate.

    This char mode device driver allows user-space applications to setup
    messaging communication channels using single shared RapidIO messaging
    mailbox.

    By default this driver uses RapidIO MBOX_1 (MBOX_0 is reserved for use by
    RIONET Ethernet emulation driver).

    [weiyj.lk@gmail.com: rapidio/rio_cm: fix return value check in riocm_init()]
    Link: http://lkml.kernel.org/r/1469198221-21970-1-git-send-email-alexandre.bounine@idt.com
    Link: http://lkml.kernel.org/r/1468952862-18056-1-git-send-email-alexandre.bounine@idt.com
    Signed-off-by: Alexandre Bounine
    Tested-by: Barry Wood
    Cc: Matt Porter
    Cc: Aurelien Jacquiot
    Cc: Andre van Herk
    Cc: Barry Wood
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

23 Mar, 2016

2 commits

  • e8de37018   rapidio: add mport char device driver ... Browse Code »

    Add mport character device driver to provide user space interface to
    basic RapidIO subsystem operations.

    See included Documentation/rapidio/mport_cdev.txt for more details.

    [akpm@linux-foundation.org: fix printk warning on i386]
    [dan.carpenter@oracle.com: mport_cdev: fix some error codes]
    Signed-off-by: Alexandre Bounine
    Signed-off-by: Dan Carpenter
    Tested-by: Barry Wood
    Cc: Matt Porter
    Cc: Aurelien Jacquiot
    Cc: Andre van Herk
    Cc: Barry Wood
    Cc: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     
  • 72d8a0d23   rapidio/tsi721: add filtered debug output ... Browse Code »

    Replace "all-or-nothing" debug output with controlled debug output using
    functional block masks. This allows run time control of debug messages
    through 'dbg_level' module parameter.

    Signed-off-by: Alexandre Bounine
    Cc: Matt Porter
    Cc: Aurelien Jacquiot
    Cc: Andre van Herk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

09 Aug, 2014

1 commit

  • 50835e977   rapidio/tsi721_dma: rework scatter-gather list handling ... Browse Code »

    Rework Tsi721 RapidIO DMA engine support to allow handling data
    scatter/gather lists longer than number of hardware buffer descriptors in
    the DMA channel's descriptor list.

    The current implementation of Tsi721 DMA transfers requires that number of
    entries in a scatter/gather list provided by a caller of
    dmaengine_prep_rio_sg() should not exceed number of allocated hardware
    buffer descriptors.

    This patch removes the limitation by processing long scatter/gather lists
    by sections that can be transferred using hardware descriptor ring of
    configured size. It also introduces a module parameter
    "dma_desc_per_channel" to allow run-time configuration of Tsi721 hardware
    buffer descriptor rings.

    Signed-off-by: Alexandre Bounine
    Cc: Matt Porter
    Cc: Andre van Herk
    Cc: Stef van Os
    Cc: Vinod Koul
    Cc: Dan Williams
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

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
     

25 Jul, 2013

1 commit

04 Jul, 2013

1 commit

  • ed5edee2f   rapidio: documentation update ... Browse Code »

    Update RapidIO documentation files to reflect modularization changes.

    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

1 commit

03 Nov, 2011

2 commits

  • 088024b1d   RapidIO: documentation update ... Browse Code »

    Update rapidio.txt to reflect changes from recent patch.
    See http://marc.info/?l=linux-kernel&m=131285620113589&w=2 for details.

    Signed-off-by: Alexandre Bounine
    Cc: Liu Gang
    Cc: Micha Nelissen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     
  • 48618fb4e   RapidIO: add mport driver for Tsi721 bridge ... Browse Code »

    Add RapidIO mport driver for IDT TSI721 PCI Express-to-SRIO bridge device.
    The driver provides full set of callback functions defined for mport
    devices in RapidIO subsystem. It also is compatible with current version
    of RIONET driver (Ethernet over RapidIO messaging services).

    This patch is applicable to kernel versions starting from 2.6.39.

    Signed-off-by: Alexandre Bounine
    Signed-off-by: Chul Kim
    Cc: Kumar Gala
    Cc: Matt Porter
    Cc: Li Yang
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine
     

24 Mar, 2011

1 commit

  • e15b4d687   rapidio: add RapidIO documentation ... Browse Code »

    Add RapidIO documentation files as it was discussed earlier (see thread
    http://marc.info/?l=linux-kernel&m=129202338918062&w=2)

    Signed-off-by: Alexandre Bounine
    Cc: Kumar Gala
    Cc: Matt Porter
    Cc: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexandre Bounine