src/soc/fu/alu/pipeline.py

   1 from nmutil.singlepipe import ControlBase
   2 from nmutil.pipemodbase import PipeModBaseChain
   3 from soc.fu.alu.input_stage import ALUInputStage
   4 from soc.fu.alu.main_stage import ALUMainStage
   5 from soc.fu.alu.output_stage import ALUOutputStage
   6
   7 class ALUStages(PipeModBaseChain):
   8     def get_chain(self):
   9         inp = ALUInputStage(self.pspec)
  10         main = ALUMainStage(self.pspec)
  11         out = ALUOutputStage(self.pspec)
  12         return [inp, main, out]
  13
  14
  15 class ALUBasePipe(ControlBase):
  16     def __init__(self, pspec):
  17         ControlBase.__init__(self)
  18         self.pspec = pspec
  19         self.pipe1 = ALUStages(pspec)
  20         self._eqs = self.connect([self.pipe1])
  21
  22     def elaborate(self, platform):
  23         m = ControlBase.elaborate(self, platform)
  24         m.submodules.pipe = self.pipe1
  25         m.d.comb += self._eqs
  26         return m