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From: Marius Strobl <marius@FreeBSD.org>
Date: Mon, 25 Jul 2011 14:39:22 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/sparc64/sparc64 iommu.c
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marius      2011-07-25 14:39:22 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/sparc64/sparc64  iommu.c 
  Log:
  SVN rev 224312 on 2011-07-25 14:39:22Z by marius
  
  MFC: r220931
  
  - Use the streaming cache unless BUS_DMA_COHERENT is specified. Since
    r220375 (MFC'ed to stable/8 in r221191) 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
  1.49.2.6  +1 -13     src/sys/sparc64/sparc64/iommu.c