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From: Marius Strobl <marius@FreeBSD.org>
Date: Thu, 21 Apr 2011 21:56:28 +0000 (UTC)
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Subject: cvs commit: src/sys/sparc64/sparc64 iommu.c
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marius      2011-04-21 21:56:28 UTC

  FreeBSD src repository

  Modified files:
    sys/sparc64/sparc64  iommu.c 
  Log:
  SVN rev 220931 on 2011-04-21 21:56:28Z by marius
  
  - Use the streaming cache unless BUS_DMA_COHERENT is specified. Since
    r220375 all drivers enabled in the sparc64 GENERIC should be either
    correctly using bus_dmamap_sync(9) calls or supply BUS_DMA_COHERENT
    when appropriate or as a workaround for missing bus_dmamap_sync(9)
    calls (sound(4) drivers and partially sym(4)). In at least some
    configurations taking advantage of the streaming cache results in
    a modest performance improvement.
  - Remove the memory barrier for BUS_DMASYNC_PREREAD which as the
    comment already suggested is bogus.
  - Add my copyright for having implemented several things like support
    for the Fire and Oberon IOMMUs, taking over PROM IOMMU mappings etc.
  
  Revision  Changes    Path
  1.54      +1 -13     src/sys/sparc64/sparc64/iommu.c