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- Use the streaming cache unless BUS_DMA_COHERENT is specified. Since

Description

  • 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.

Details

Provenance
mariusAuthored on Apr 21 2011, 9:56 PM
Parents
rG6d8ea1e7b382: Add g_eli_key_cache.c to GELI.
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