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

Marius Strobl marius at
Sat Sep 13 15:17:33 UTC 2008

marius      2008-09-13 15:17:21 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/sparc64/sparc64  autoconf.c 
  SVN rev 182997 on 2008-09-13 15:17:21Z by marius
  MFC: r182688
  Bypass isa_probe_children(9) and directly call bus_generic_attach(9)
  in order to avoid the invasive probes done by identify-routines of
  ISA drivers, which may access unassigned addresses or those of
  unrelated devices and thus in turn can trigger master/target aborts
  as revealed by r182108 and ahc(4). I think that this is also the
  cause of the hang previously seen on B100 blades during boot.
  Bypassing isa_probe_children(9) also avoids adding ISA hints, which
  just can be wrong for sparc64.
  Approved by:    re (kib)
  Revision  Changes    Path  +7 -1      src/sys/sparc64/sparc64/autoconf.c

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