Eric Lee / smarc-fsl-linux-kernel

21 May, 2014

1 commit

  • 88a984ba0   DMA-API: Change dma_declare_coherent_memory() CPU address to phys_addr_t ... Browse Code »

    dma_declare_coherent_memory() takes two addresses for a region of memory: a
    "bus_addr" and a "device_addr". I think the intent is that "bus_addr" is
    the physical address a *CPU* would use to access the region, and
    "device_addr" is the bus address the *device* would use to address the
    region.

    Rename "bus_addr" to "phys_addr" and change its type to phys_addr_t.
    Most callers already supply a phys_addr_t for this argument. The others
    supply a 32-bit integer (a constant, unsigned int, or __u32) and need no
    change.

    Use "unsigned long", not phys_addr_t, to hold PFNs.

    No functional change (this could theoretically fix a truncation in a config
    with 32-bit dma_addr_t and 64-bit phys_addr_t, but I don't think there are
    any such cases involving this code).

    Signed-off-by: Bjorn Helgaas
    Acked-by: Arnd Bergmann
    Acked-by: Greg Kroah-Hartman
    Acked-by: James Bottomley
    Acked-by: Randy Dunlap

    Bjorn Helgaas
     

30 Jul, 2012

1 commit

  • 64ccc9c03   common: dma-mapping: add support for generic dma_mmap_* calls ... Browse Code »

    Commit 9adc5374 ('common: dma-mapping: introduce mmap method') added a
    generic method for implementing mmap user call to dma_map_ops structure.

    This patch converts ARM and PowerPC architectures (the only providers of
    dma_mmap_coherent/dma_mmap_writecombine calls) to use this generic
    dma_map_ops based call and adds a generic cross architecture
    definition for dma_mmap_attrs, dma_mmap_coherent, dma_mmap_writecombine
    functions.

    The generic mmap virt_to_page-based fallback implementation is provided for
    architectures which don't provide their own implementation for mmap method.

    Signed-off-by: Marek Szyprowski
    Reviewed-by: Kyungmin Park

    Marek Szyprowski
     

21 May, 2012

1 commit

30 Jun, 2008

1 commit