python/m5/objects/Device.mpy

   1 from FunctionalMemory import FunctionalMemory
   2
   3 # This device exists only because there are some devices that I don't
   4 # want to have a Platform parameter because it would cause a cycle in
   5 # the C++ that cannot be easily solved.
   6 #
   7 # The real solution to this problem is to pass the ParamXXX structure
   8 # to the constructor, but with the express condition that SimObject
   9 # parameter values are not to be available at construction time.  If
  10 # some further configuration must be done, it must be done during the
  11 # initialization phase at which point all SimObject pointers will be
  12 # valid.
  13 simobj FooPioDevice(FunctionalMemory):
  14     type = 'PioDevice'
  15     abstract = True
  16     addr = Param.Addr("Device Address")
  17     mmu = Param.MemoryController(Super, "Memory Controller")
  18     io_bus = Param.Bus(NULL, "The IO Bus to attach to")
  19     pio_latency = Param.Tick(1, "Programmed IO latency in bus cycles")
  20
  21 simobj FooDmaDevice(FooPioDevice):
  22     type = 'DmaDevice'
  23     abstract = True
  24
  25 simobj PioDevice(FooPioDevice):
  26     type = 'PioDevice'
  27     abstract = True
  28     platform = Param.Platform(Super, "Platform")
  29
  30 simobj DmaDevice(PioDevice):
  31     type = 'DmaDevice'
  32     abstract = True
  33