Thomas Moestl b2d59f4234 bus_dmamap_sync() overhaul:
- Remove NetBSD-style or-ed together BUS_DMASYNC operations, in some
  cases relaxing the (intended) syncing operation a bit.
- Stop pretending that that we can sync part of a dmamap: replace the
  GEM_CDTXSYNC and GEM_CDRXSYNC macros with GEM_CDSYNC to sync the
  complete control map, and combine syncs wherever possible to avoid
  the overhead.
- Sync all maps before unloading them.
- Remove a few syncs which should be unnecessary.
2003-01-21 17:17:01 +00:00
..
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