cvs commit: src/sys/sparc64/sparc64 bus_machdep.c

[Marcel Moolenaar]

marcel      2003/08/24 00:47:52 PDT

  FreeBSD src repository

  Modified files:
    sys/sparc64/sparc64  bus_machdep.c 
  Log:
  Allow bus barrier operations on fake tags. The purpose of a fake
  bus tag is to allow bus space accesses prior to having newbus
  fully initialized, such as would be the case for console drivers.
  Since barriers are a fundamental part of bus space accesses, not
  allowing them on fake tags would defeat the purpose of these tags.
  We use the barrier function normally associated with nexus. This
  is the barrier used when subordinates haven't defined a barrier
  themselves.
  
  Revision  Changes    Path
  1.35      +4 -4      src/sys/sparc64/sparc64/bus_machdep.c