cvs commit: src/sys/dev/dcons dcons_crom.c dcons_os.c dcons_os.h

[Hidetoshi Shimokawa]

simokawa    2007-06-08 00:54:44 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/dcons        dcons_crom.c dcons_os.c dcons_os.h 
  Log:
  Poll bus resets on FireWire while kdb/gdb is active.
  
  Now, it's safe to call the fwohci interrupt(polling) routine while ddb/gdb
  is active. After this change, a dcons connnection over FireWire can survive
  bus resets even in kernel debugger.
  
  This means that it is not too late to plug a FireWire cable after a panic
  to investigate the problem.
  
  Actually there is a small window(between a jump to kernel from loader and
  initialization of dcons_crom) in which no one can take care of a bus reset.
  Except that window, firewire console should keep working
  from loader to reboot even with a panic and a bus reset.
  (as far as you enable LOADER_FIREWIRE_SUPPORT)
  
  Revision  Changes    Path
  1.8       +14 -0     src/sys/dev/dcons/dcons_crom.c
  1.15      +1 -0      src/sys/dev/dcons/dcons_os.c
  1.3       +4 -0      src/sys/dev/dcons/dcons_os.h