Date: Mon, 25 Jul 2011 14:39:22 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/sparc64/sparc64 iommu.c Message-ID: <201107251439.p6PEdWMj059071@repoman.freebsd.org>
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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
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