src/soc/fu/shift_rot/pipeline.py

   1 from nmutil.singlepipe import ControlBase
   2 from nmutil.pipemodbase import PipeModBaseChain
   3 from soc.fu.shift_rot.input_stage import ShiftRotInputStage
   4 from soc.fu.shift_rot.main_stage import ShiftRotMainStage
   5 from soc.fu.shift_rot.output_stage import ShiftRotOutputStage
   6
   7 class ShiftRotStages(PipeModBaseChain):
   8     def get_chain(self):
   9         inp = ShiftRotInputStage(self.pspec)
  10         main = ShiftRotMainStage(self.pspec)
  11         return [inp, main]
  12
  13
  14 class ShiftRotStageEnd(PipeModBaseChain):
  15     def get_chain(self):
  16         out = ShiftRotOutputStage(self.pspec)
  17         return [out]
  18
  19
  20 class ShiftRotBasePipe(ControlBase):
  21     def __init__(self, pspec):
  22         ControlBase.__init__(self)
  23         self.pspec = pspec
  24         self.pipe1 = ShiftRotStages(pspec)
  25         self.pipe2 = ShiftRotStageEnd(pspec)
  26         self._eqs = self.connect([self.pipe1, self.pipe2])
  27
  28     def elaborate(self, platform):
  29         m = ControlBase.elaborate(self, platform)
  30         m.submodules.pipe1 = self.pipe1
  31         m.submodules.pipe2 = self.pipe2
  32         m.d.comb += self._eqs
  33         return m