Eric Lee / smarc-fsl-linux-kernel

11 Sep, 2009

1 commit

  • 1a5aeeecd   dca: registering requesters in multiple dca domains ... Browse Code »

    This patch enables DCA support on multiple-IOH/multiple-IIO architectures.
    It modifies dca module by replacing single dca_providers list
    with dca_domains list, each domain containing separate list of providers.
    This approach lets dca driver manage multiple domains, i.e. sets of providers
    and requesters mapped back to the same PCI root complex device.
    The driver takes care to register each requester to a provider
    from the same domain.

    Signed-off-by: Dan Williams
    Signed-off-by: Maciej Sosnowski

    Maciej Sosnowski
     

22 Mar, 2009

1 commit

23 Jul, 2008

1 commit

  • 7f1b358a2   I/OAT: I/OAT version 3.0 support ... Browse Code »

    This patch adds to ioatdma and dca modules
    support for Intel I/OAT DMA engine ver.3 (aka CB3 device).
    The main features of I/OAT ver.3 are:
    * 8 single channel DMA devices (8 channels total)
    * 8 DCA providers, each can accept 2 requesters
    * 8-bit TAG values and 32-bit extended APIC IDs

    Signed-off-by: Maciej Sosnowski
    Signed-off-by: Dan Williams

    Maciej Sosnowski
     

09 Feb, 2008

1 commit

17 Oct, 2007

1 commit

  • 7589670f3   DCA: Add Direct Cache Access driver ... Browse Code »

    Direct Cache Access (DCA) is a method for warming the CPU cache before data
    is used, with the intent of lessening the impact of cache misses. This
    patch adds a manager and interface for matching up client requests for DCA
    services with devices that offer DCA services.

    In order to use DCA, a module must do bus writes with the appropriate tag
    bits set to trigger a cache read for a specific CPU. However, different
    CPUs and chipsets can require different sets of tag bits, and the methods
    for determining the correct bits may be simple hardcoding or may be a
    hardware specific magic incantation. This interface is a way for DCA
    clients to find the correct tag bits for the targeted CPU without needing
    to know the specifics.

    [Dave Miller] use DEFINE_SPINLOCK()

    Signed-off-by: Shannon Nelson
    Acked-by: David S. Miller
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Shannon Nelson