1package xiangshan.backend.fu.vector 2 3import org.chipsalliance.cde.config.Parameters 4import chisel3._ 5import chisel3.util._ 6import utility.DataHoldBypass 7import xiangshan.backend.fu.vector.Bundles.VConfig 8import xiangshan.backend.fu.vector.utils.ScalaDupToVector 9import xiangshan.backend.fu.{FuConfig, FuncUnit} 10import xiangshan.ExceptionNO.illegalInstr 11import yunsuan.VialuFixType 12 13class VecNonPipedFuncUnit(cfg: FuConfig)(implicit p: Parameters) extends FuncUnit(cfg) 14 with VecFuncUnitAlias 15{ 16 private val src0 = inData.src(0) 17 private val src1 = WireInit(inData.src(1)) // vs2 only 18 19 protected val vs2 = src1 20 protected val vs1 = src0 21 protected val oldVd = inData.src(2) 22 23 protected val outCtrl = DataHoldBypass(io.in.bits.ctrl, io.in.fire) 24 protected val outData = DataHoldBypass(io.in.bits.data, io.in.fire) 25 26 protected val outVecCtrl = outCtrl.vpu.get 27 protected val outVm = outVecCtrl.vm 28 29 // vadc.vv, vsbc.vv need this 30 protected val outNeedClearMask: Bool = VialuFixType.needClearMask(outCtrl.fuOpType) 31 32 protected val outVConfig = if(!cfg.vconfigWakeUp) outCtrl.vpu.get.vconfig else outData.getSrcVConfig.asTypeOf(new VConfig) 33 protected val outVl = outVConfig.vl 34 protected val outVstart = outVecCtrl.vstart 35 protected val outOldVd = outData.src(2) 36 // There is no difference between control-dependency or data-dependency for function unit, 37 // but spliting these in ctrl or data bundles is easy to coding. 38 protected val outSrcMask: UInt = if (!cfg.maskWakeUp) outCtrl.vpu.get.vmask else { 39 MuxCase( 40 outData.getSrcMask, Seq( 41 outNeedClearMask -> allMaskFalse, 42 outVm -> allMaskTrue 43 ) 44 ) 45 } 46 47 // vstart illegal 48 if (cfg.exceptionOut.nonEmpty) { 49 val outVstart = outCtrl.vpu.get.vstart 50 val vstartIllegal = outVstart =/= 0.U 51 io.out.bits.ctrl.exceptionVec.get := 0.U.asTypeOf(io.out.bits.ctrl.exceptionVec.get) 52 io.out.bits.ctrl.exceptionVec.get(illegalInstr) := vstartIllegal 53 } 54 55 connectNonPipedCtrlSingal 56} 57