xref: /XiangShan/src/main/scala/xiangshan/backend/issue/Scheduler.scala (revision dab1c36e18bdf1fc3a46269800809ddd7d65a99e)
1package xiangshan.backend.issue
2
3import org.chipsalliance.cde.config.Parameters
4import chisel3._
5import chisel3.util._
6import freechips.rocketchip.diplomacy.{LazyModule, LazyModuleImp}
7import xiangshan._
8import xiangshan.backend.Bundles._
9import xiangshan.backend.datapath.DataConfig.{IntData, VAddrData, VecData}
10import xiangshan.backend.datapath.WbConfig.{IntWB, VfWB}
11import xiangshan.backend.fu.FuType
12import xiangshan.backend.regfile.RfWritePortWithConfig
13import xiangshan.backend.rename.BusyTable
14import xiangshan.mem.{LsqEnqCtrl, LsqEnqIO, MemWaitUpdateReq, SqPtr, LqPtr}
15
16sealed trait SchedulerType
17
18case class IntScheduler() extends SchedulerType
19case class MemScheduler() extends SchedulerType
20case class VfScheduler() extends SchedulerType
21case class NoScheduler() extends SchedulerType
22
23class Scheduler(val params: SchdBlockParams)(implicit p: Parameters) extends LazyModule with HasXSParameter {
24  override def shouldBeInlined: Boolean = false
25
26  val numIntStateWrite = backendParams.numPregWb(IntData())
27  val numVfStateWrite = backendParams.numPregWb(VecData())
28
29  val dispatch2Iq = LazyModule(new Dispatch2Iq(params))
30  val issueQueue = params.issueBlockParams.map(x => LazyModule(new IssueQueue(x).suggestName(x.getIQName)))
31
32  lazy val module: SchedulerImpBase = params.schdType match {
33    case IntScheduler() => new SchedulerArithImp(this)(params, p)
34    case MemScheduler() => new SchedulerMemImp(this)(params, p)
35    case VfScheduler() => new SchedulerArithImp(this)(params, p)
36    case _ => null
37  }
38}
39
40class SchedulerIO()(implicit params: SchdBlockParams, p: Parameters) extends XSBundle {
41  // params alias
42  private val LoadQueueSize = VirtualLoadQueueSize
43
44  val fromTop = new Bundle {
45    val hartId = Input(UInt(8.W))
46  }
47  val fromWbFuBusyTable = new Bundle{
48    val fuBusyTableRead = MixedVec(params.issueBlockParams.map(x => Input(x.genWbFuBusyTableReadBundle)))
49  }
50  val wbFuBusyTable = MixedVec(params.issueBlockParams.map(x => Output(x.genWbFuBusyTableWriteBundle)))
51
52  val fromCtrlBlock = new Bundle {
53    val pcVec = Input(Vec(params.numPcReadPort, UInt(VAddrData().dataWidth.W)))
54    val flush = Flipped(ValidIO(new Redirect))
55  }
56  val fromDispatch = new Bundle {
57    val allocPregs = Vec(RenameWidth, Input(new ResetPregStateReq))
58    val uops =  Vec(params.numUopIn, Flipped(DecoupledIO(new DynInst)))
59  }
60  val intWriteBack = MixedVec(Vec(backendParams.numPregWb(IntData()),
61    new RfWritePortWithConfig(backendParams.intPregParams.dataCfg, backendParams.intPregParams.addrWidth)))
62  val vfWriteBack = MixedVec(Vec(backendParams.numPregWb(VecData()),
63    new RfWritePortWithConfig(backendParams.vfPregParams.dataCfg, backendParams.vfPregParams.addrWidth)))
64  val toDataPath: MixedVec[MixedVec[DecoupledIO[IssueQueueIssueBundle]]] = MixedVec(params.issueBlockParams.map(_.genIssueDecoupledBundle))
65  val toDataPathAfterDelay: MixedVec[MixedVec[DecoupledIO[IssueQueueIssueBundle]]] = MixedVec(params.issueBlockParams.map(_.genIssueDecoupledBundle))
66  val fromCancelNetwork = Flipped(MixedVec(params.issueBlockParams.map(_.genIssueDecoupledBundle)))
67
68  val fromSchedulers = new Bundle {
69    val wakeupVec: MixedVec[ValidIO[IssueQueueIQWakeUpBundle]] = Flipped(params.genIQWakeUpInValidBundle)
70  }
71
72  val toSchedulers = new Bundle {
73    val wakeupVec: MixedVec[ValidIO[IssueQueueIQWakeUpBundle]] = params.genIQWakeUpOutValidBundle
74  }
75
76  val fromDataPath = new Bundle {
77    val resp: MixedVec[MixedVec[OGRespBundle]] = MixedVec(params.issueBlockParams.map(x => Flipped(x.genOGRespBundle)))
78    val og0Cancel = Input(ExuOH(backendParams.numExu))
79    // Todo: remove this after no cancel signal from og1
80    val og1Cancel = Input(ExuOH(backendParams.numExu))
81    val cancelToBusyTable = Vec(backendParams.numExu, Flipped(ValidIO(new CancelSignal)))
82    // just be compatible to old code
83    def apply(i: Int)(j: Int) = resp(i)(j)
84  }
85
86  val loadFinalIssueResp = MixedVec(params.issueBlockParams.map(x => MixedVec(Vec(x.LdExuCnt, Flipped(ValidIO(new IssueQueueDeqRespBundle()(p, x)))))))
87  val memAddrIssueResp = MixedVec(params.issueBlockParams.map(x => MixedVec(Vec(x.LdExuCnt, Flipped(ValidIO(new IssueQueueDeqRespBundle()(p, x)))))))
88
89  val ldCancel = Vec(backendParams.LduCnt + backendParams.HyuCnt, Flipped(new LoadCancelIO))
90
91  val memIO = if (params.isMemSchd) Some(new Bundle {
92    val lsqEnqIO = Flipped(new LsqEnqIO)
93  }) else None
94  val fromMem = if (params.isMemSchd) Some(new Bundle {
95    val ldaFeedback = Flipped(Vec(params.LduCnt, new MemRSFeedbackIO))
96    val staFeedback = Flipped(Vec(params.StaCnt, new MemRSFeedbackIO))
97    val hyuFeedback = Flipped(Vec(params.HyuCnt, new MemRSFeedbackIO))
98    val stIssuePtr = Input(new SqPtr())
99    val lcommit = Input(UInt(log2Up(CommitWidth + 1).W))
100    val scommit = Input(UInt(log2Ceil(EnsbufferWidth + 1).W)) // connected to `memBlock.io.sqDeq` instead of ROB
101    val lqDeqPtr = Input(new LqPtr)
102    val sqDeqPtr = Input(new SqPtr)
103    // from lsq
104    val lqCancelCnt = Input(UInt(log2Up(LoadQueueSize + 1).W))
105    val sqCancelCnt = Input(UInt(log2Up(StoreQueueSize + 1).W))
106    val memWaitUpdateReq = Flipped(new MemWaitUpdateReq)
107  }) else None
108  val toMem = if (params.isMemSchd) Some(new Bundle {
109    val loadFastMatch = Output(Vec(params.LduCnt, new IssueQueueLoadBundle))
110  }) else None
111}
112
113abstract class SchedulerImpBase(wrapper: Scheduler)(implicit params: SchdBlockParams, p: Parameters)
114  extends LazyModuleImp(wrapper)
115    with HasXSParameter
116{
117  val io = IO(new SchedulerIO())
118
119  // alias
120  private val iqWakeUpInMap: Map[Int, ValidIO[IssueQueueIQWakeUpBundle]] =
121    io.fromSchedulers.wakeupVec.map(x => (x.bits.exuIdx, x)).toMap
122  private val schdType = params.schdType
123
124  // Modules
125  val dispatch2Iq: Dispatch2IqImp = wrapper.dispatch2Iq.module
126  val issueQueues: Seq[IssueQueueImp] = wrapper.issueQueue.map(_.module)
127
128  // valid count
129  dispatch2Iq.io.iqValidCnt := issueQueues.filter(_.params.StdCnt == 0).map(_.io.status.validCnt)
130
131  // BusyTable Modules
132  val intBusyTable = schdType match {
133    case IntScheduler() | MemScheduler() => Some(Module(new BusyTable(dispatch2Iq.numIntStateRead, wrapper.numIntStateWrite, IntPhyRegs, IntWB())))
134    case _ => None
135  }
136
137  val vfBusyTable = schdType match {
138    case VfScheduler() | MemScheduler() => Some(Module(new BusyTable(dispatch2Iq.numVfStateRead, wrapper.numVfStateWrite, VfPhyRegs, VfWB())))
139    case _ => None
140  }
141
142  dispatch2Iq.io match { case dp2iq =>
143    dp2iq.redirect <> io.fromCtrlBlock.flush
144    dp2iq.in <> io.fromDispatch.uops
145    dp2iq.readIntState.foreach(_ <> intBusyTable.get.io.read)
146    dp2iq.readVfState.foreach(_ <> vfBusyTable.get.io.read)
147  }
148
149  intBusyTable match {
150    case Some(bt) =>
151      bt.io.allocPregs.zip(io.fromDispatch.allocPregs).foreach { case (btAllocPregs, dpAllocPregs) =>
152        btAllocPregs.valid := dpAllocPregs.isInt
153        btAllocPregs.bits := dpAllocPregs.preg
154      }
155      bt.io.wbPregs.zipWithIndex.foreach { case (wb, i) =>
156        wb.valid := io.intWriteBack(i).wen && io.intWriteBack(i).intWen
157        wb.bits := io.intWriteBack(i).addr
158      }
159      bt.io.wakeUp := io.fromSchedulers.wakeupVec
160      bt.io.cancel := io.fromDataPath.cancelToBusyTable
161    case None =>
162  }
163
164  vfBusyTable match {
165    case Some(bt) =>
166      bt.io.allocPregs.zip(io.fromDispatch.allocPregs).foreach { case (btAllocPregs, dpAllocPregs) =>
167        btAllocPregs.valid := dpAllocPregs.isFp
168        btAllocPregs.bits := dpAllocPregs.preg
169      }
170      bt.io.wbPregs.zipWithIndex.foreach { case (wb, i) =>
171        wb.valid := io.vfWriteBack(i).wen && (io.vfWriteBack(i).fpWen || io.vfWriteBack(i).vecWen)
172        wb.bits := io.vfWriteBack(i).addr
173      }
174      bt.io.wakeUp := io.fromSchedulers.wakeupVec
175      bt.io.cancel := io.fromDataPath.cancelToBusyTable
176    case None =>
177  }
178
179  val wakeupFromWBVec = Wire(params.genWBWakeUpSinkValidBundle)
180  val writeback = params.schdType match {
181    case IntScheduler() => io.intWriteBack
182    case MemScheduler() => io.intWriteBack ++ io.vfWriteBack
183    case VfScheduler() => io.vfWriteBack
184    case _ => Seq()
185  }
186  wakeupFromWBVec.zip(writeback).foreach { case (sink, source) =>
187    sink.valid := source.wen
188    sink.bits.rfWen := source.intWen
189    sink.bits.fpWen := source.fpWen
190    sink.bits.vecWen := source.vecWen
191    sink.bits.pdest := source.addr
192  }
193
194  // Connect bundles having the same wakeup source
195  issueQueues.zipWithIndex.foreach { case(iq, i) =>
196    iq.io.wakeupFromIQ.foreach { wakeUp =>
197      wakeUp := iqWakeUpInMap(wakeUp.bits.exuIdx)
198    }
199    iq.io.og0Cancel := io.fromDataPath.og0Cancel
200    iq.io.og1Cancel := io.fromDataPath.og1Cancel
201    iq.io.ldCancel := io.ldCancel
202    iq.io.fromCancelNetwork <> io.fromCancelNetwork(i)
203  }
204
205  private val iqWakeUpOutMap: Map[Int, ValidIO[IssueQueueIQWakeUpBundle]] =
206    issueQueues.flatMap(_.io.wakeupToIQ)
207      .map(x => (x.bits.exuIdx, x))
208      .toMap
209
210  // Connect bundles having the same wakeup source
211  io.toSchedulers.wakeupVec.foreach { wakeUp =>
212    wakeUp := iqWakeUpOutMap(wakeUp.bits.exuIdx)
213  }
214
215  io.toDataPath.zipWithIndex.foreach { case (toDp, i) =>
216    toDp <> issueQueues(i).io.deq
217  }
218  io.toDataPathAfterDelay.zipWithIndex.foreach { case (toDpDy, i) =>
219    toDpDy <> issueQueues(i).io.deqDelay
220  }
221
222  // Response
223  issueQueues.zipWithIndex.foreach { case (iq, i) =>
224    iq.io.deqResp.zipWithIndex.foreach { case (deqResp, j) =>
225      deqResp.valid := iq.io.deq(j).valid && io.toDataPath(i)(j).ready
226      deqResp.bits.respType := RSFeedbackType.issueSuccess
227      deqResp.bits.robIdx := iq.io.deq(j).bits.common.robIdx
228      deqResp.bits.uopIdx := iq.io.deq(j).bits.common.vpu.getOrElse(0.U.asTypeOf(new VPUCtrlSignals)).vuopIdx
229      deqResp.bits.dataInvalidSqIdx := DontCare
230      deqResp.bits.rfWen := iq.io.deq(j).bits.common.rfWen.getOrElse(false.B)
231      deqResp.bits.fuType := iq.io.deq(j).bits.common.fuType
232    }
233    iq.io.og0Resp.zipWithIndex.foreach { case (og0Resp, j) =>
234      og0Resp := io.fromDataPath(i)(j).og0resp
235    }
236    iq.io.og1Resp.zipWithIndex.foreach { case (og1Resp, j) =>
237      og1Resp := io.fromDataPath(i)(j).og1resp
238    }
239    iq.io.finalIssueResp.foreach(_.zipWithIndex.foreach { case (finalIssueResp, j) =>
240      if (io.loadFinalIssueResp(i).isDefinedAt(j)) {
241        finalIssueResp := io.loadFinalIssueResp(i)(j)
242      } else {
243        finalIssueResp := 0.U.asTypeOf(finalIssueResp)
244      }
245    })
246    iq.io.memAddrIssueResp.foreach(_.zipWithIndex.foreach { case (memAddrIssueResp, j) =>
247      memAddrIssueResp := io.memAddrIssueResp(i)(j)
248    })
249    iq.io.wbBusyTableRead := io.fromWbFuBusyTable.fuBusyTableRead(i)
250    io.wbFuBusyTable(i) := iq.io.wbBusyTableWrite
251  }
252
253  println(s"[Scheduler] io.fromSchedulers.wakeupVec: ${io.fromSchedulers.wakeupVec.map(x => backendParams.getExuName(x.bits.exuIdx))}")
254  println(s"[Scheduler] iqWakeUpInKeys: ${iqWakeUpInMap.keys}")
255
256  println(s"[Scheduler] iqWakeUpOutKeys: ${iqWakeUpOutMap.keys}")
257  println(s"[Scheduler] io.toSchedulers.wakeupVec: ${io.toSchedulers.wakeupVec.map(x => backendParams.getExuName(x.bits.exuIdx))}")
258}
259
260class SchedulerArithImp(override val wrapper: Scheduler)(implicit params: SchdBlockParams, p: Parameters)
261  extends SchedulerImpBase(wrapper)
262    with HasXSParameter
263{
264//  dontTouch(io.vfWbFuBusyTable)
265  println(s"[SchedulerArithImp] " +
266    s"has intBusyTable: ${intBusyTable.nonEmpty}, " +
267    s"has vfBusyTable: ${vfBusyTable.nonEmpty}")
268
269  issueQueues.zipWithIndex.foreach { case (iq, i) =>
270    iq.io.flush <> io.fromCtrlBlock.flush
271    iq.io.enq <> dispatch2Iq.io.out(i)
272    iq.io.wakeupFromWB := wakeupFromWBVec
273  }
274}
275
276// FIXME: Vector mem instructions may not be handled properly!
277class SchedulerMemImp(override val wrapper: Scheduler)(implicit params: SchdBlockParams, p: Parameters)
278  extends SchedulerImpBase(wrapper)
279    with HasXSParameter
280{
281  println(s"[SchedulerMemImp] " +
282    s"has intBusyTable: ${intBusyTable.nonEmpty}, " +
283    s"has vfBusyTable: ${vfBusyTable.nonEmpty}")
284
285  val memAddrIQs = issueQueues.filter(_.params.isMemAddrIQ)
286  val stAddrIQs = issueQueues.filter(iq => iq.params.StaCnt > 0 || iq.params.VstaCnt > 0) // included in memAddrIQs
287  val ldAddrIQs = issueQueues.filter(iq => iq.params.LduCnt > 0 || iq.params.VlduCnt > 0)
288  val stDataIQs = issueQueues.filter(iq => iq.params.StdCnt > 0 || iq.params.VstdCnt > 0)
289  val vecMemIQs = issueQueues.filter(_.params.isVecMemIQ)
290  val (hyuIQs, hyuIQIdxs) = issueQueues.zipWithIndex.filter(_._1.params.HyuCnt > 0).unzip
291
292  println(s"[SchedulerMemImp] memAddrIQs.size: ${memAddrIQs.size}, enq.size: ${memAddrIQs.map(_.io.enq.size).sum}")
293  println(s"[SchedulerMemImp] stAddrIQs.size:  ${stAddrIQs.size }, enq.size: ${stAddrIQs.map(_.io.enq.size).sum}")
294  println(s"[SchedulerMemImp] ldAddrIQs.size:  ${ldAddrIQs.size }, enq.size: ${ldAddrIQs.map(_.io.enq.size).sum}")
295  println(s"[SchedulerMemImp] stDataIQs.size:  ${stDataIQs.size }, enq.size: ${stDataIQs.map(_.io.enq.size).sum}")
296  println(s"[SchedulerMemImp] hyuIQs.size:     ${hyuIQs.size    }, enq.size: ${hyuIQs.map(_.io.enq.size).sum}")
297  require(memAddrIQs.nonEmpty && stDataIQs.nonEmpty)
298
299  io.toMem.get.loadFastMatch := 0.U.asTypeOf(io.toMem.get.loadFastMatch) // TODO: is still needed?
300
301  memAddrIQs.zipWithIndex.foreach { case (iq, i) =>
302    iq.io.flush <> io.fromCtrlBlock.flush
303    iq.io.enq <> dispatch2Iq.io.out(i)
304    iq.io.wakeupFromWB := wakeupFromWBVec
305  }
306
307  ldAddrIQs.zipWithIndex.foreach {
308    case (imp: IssueQueueMemAddrImp, i) =>
309      imp.io.memIO.get.feedbackIO.head := 0.U.asTypeOf(imp.io.memIO.get.feedbackIO.head)
310      imp.io.memIO.get.checkWait.stIssuePtr := io.fromMem.get.stIssuePtr
311      imp.io.memIO.get.checkWait.memWaitUpdateReq := io.fromMem.get.memWaitUpdateReq
312    case _ =>
313  }
314
315  stAddrIQs.zipWithIndex.foreach {
316    case (imp: IssueQueueMemAddrImp, i) =>
317      imp.io.memIO.get.feedbackIO.head := io.fromMem.get.staFeedback(i)
318      imp.io.memIO.get.checkWait.stIssuePtr := io.fromMem.get.stIssuePtr
319      imp.io.memIO.get.checkWait.memWaitUpdateReq := io.fromMem.get.memWaitUpdateReq
320    case _ =>
321  }
322
323  hyuIQs.zip(hyuIQIdxs).foreach {
324    case (imp: IssueQueueMemAddrImp, idx) =>
325      imp.io.memIO.get.feedbackIO.head := io.fromMem.get.hyuFeedback.head
326      imp.io.memIO.get.feedbackIO(1) := 0.U.asTypeOf(imp.io.memIO.get.feedbackIO(1))
327      imp.io.memIO.get.checkWait.stIssuePtr := io.fromMem.get.stIssuePtr
328      imp.io.memIO.get.checkWait.memWaitUpdateReq := io.fromMem.get.memWaitUpdateReq
329      // TODO: refactor ditry code
330      imp.io.deq(1).ready := false.B
331      imp.io.deqDelay(1).ready := false.B
332      io.toDataPath(idx)(1).valid := false.B
333      io.toDataPathAfterDelay(idx)(1).valid := false.B
334      io.toDataPath(idx)(1).bits := 0.U.asTypeOf(io.toDataPath(idx)(1).bits)
335      io.toDataPathAfterDelay(idx)(1).bits := 0.U.asTypeOf(io.toDataPathAfterDelay(idx)(1).bits)
336    case _ =>
337  }
338
339  private val staIdxSeq = (stAddrIQs).map(iq => iq.params.idxInSchBlk)
340  private val hyaIdxSeq = (hyuIQs).map(iq => iq.params.idxInSchBlk)
341
342  println(s"[SchedulerMemImp] sta iq idx in memSchdBlock: $staIdxSeq")
343  println(s"[SchedulerMemImp] hya iq idx in memSchdBlock: $hyaIdxSeq")
344
345  private val staEnqs = stAddrIQs.map(_.io.enq).flatten
346  private val stdEnqs = stDataIQs.map(_.io.enq).flatten.take(staEnqs.size)
347  private val hyaEnqs = hyuIQs.map(_.io.enq).flatten
348  private val hydEnqs = stDataIQs.map(_.io.enq).flatten.drop(staEnqs.size)
349
350  require(staEnqs.size == stdEnqs.size, s"number of enq ports of store address IQs(${staEnqs.size}) " +
351  s"should be equal to number of enq ports of store data IQs(${stdEnqs.size})")
352
353  require(hyaEnqs.size == hydEnqs.size, s"number of enq ports of hybrid address IQs(${hyaEnqs.size}) " +
354  s"should be equal to number of enq ports of hybrid data IQs(${hydEnqs.size})")
355
356  for ((idxInSchBlk, i) <- staIdxSeq.zipWithIndex) {
357    dispatch2Iq.io.out(idxInSchBlk).zip(staEnqs).zip(stdEnqs).foreach{ case((dp, staIQ), stdIQ) =>
358      val isAllReady = staIQ.ready && stdIQ.ready
359      dp.ready := isAllReady
360      staIQ.valid := dp.valid && isAllReady
361      stdIQ.valid := dp.valid && isAllReady && FuType.isStore(dp.bits.fuType)
362    }
363  }
364
365  for ((idxInSchBlk, i) <- hyaIdxSeq.zipWithIndex) {
366    dispatch2Iq.io.out(idxInSchBlk).zip(hyaEnqs).zip(hydEnqs).foreach{ case((dp, hyaIQ), hydIQ) =>
367      val isAllReady = hyaIQ.ready && hydIQ.ready
368      dp.ready := isAllReady
369      hyaIQ.valid := dp.valid && isAllReady
370      hydIQ.valid := dp.valid && isAllReady && FuType.FuTypeOrR(dp.bits.fuType, FuType.stu, FuType.mou)
371    }
372  }
373
374  stDataIQs.zipWithIndex.foreach { case (iq, i) =>
375    iq.io.flush <> io.fromCtrlBlock.flush
376    iq.io.wakeupFromWB := wakeupFromWBVec
377  }
378
379  (stdEnqs ++ hydEnqs).zip(staEnqs ++ hyaEnqs).zipWithIndex.foreach { case ((stdIQEnq, staIQEnq), i) =>
380    stdIQEnq.bits  := staIQEnq.bits
381    // Store data reuses store addr src(1) in dispatch2iq
382    // [dispatch2iq] --src*------src*(0)--> [staIQ|hyaIQ]
383    //                       \
384    //                        ---src*(1)--> [stdIQ]
385    // Since the src(1) of sta is easier to get, stdIQEnq.bits.src*(0) is assigned to staIQEnq.bits.src*(1)
386    // instead of dispatch2Iq.io.out(x).bits.src*(1)
387    val stdIdx = 1
388    stdIQEnq.bits.srcState(0) := staIQEnq.bits.srcState(stdIdx)
389    stdIQEnq.bits.srcType(0) := staIQEnq.bits.srcType(stdIdx)
390    stdIQEnq.bits.dataSource(0) := staIQEnq.bits.dataSource(stdIdx)
391    stdIQEnq.bits.l1ExuOH(0) := staIQEnq.bits.l1ExuOH(stdIdx)
392    stdIQEnq.bits.psrc(0) := staIQEnq.bits.psrc(stdIdx)
393    stdIQEnq.bits.sqIdx := staIQEnq.bits.sqIdx
394  }
395
396  vecMemIQs.foreach {
397    case imp: IssueQueueVecMemImp =>
398      imp.io.memIO.get.sqDeqPtr.foreach(_ := io.fromMem.get.sqDeqPtr)
399      imp.io.memIO.get.lqDeqPtr.foreach(_ := io.fromMem.get.lqDeqPtr)
400      // not used
401      imp.io.memIO.get.feedbackIO := 0.U.asTypeOf(imp.io.memIO.get.feedbackIO)
402      // maybe not used
403      imp.io.memIO.get.checkWait.stIssuePtr := io.fromMem.get.stIssuePtr
404      imp.io.memIO.get.checkWait.memWaitUpdateReq := io.fromMem.get.memWaitUpdateReq
405    case _ =>
406  }
407
408  val lsqEnqCtrl = Module(new LsqEnqCtrl)
409
410  lsqEnqCtrl.io.redirect <> io.fromCtrlBlock.flush
411  lsqEnqCtrl.io.enq <> dispatch2Iq.io.enqLsqIO.get
412  lsqEnqCtrl.io.lcommit := io.fromMem.get.lcommit
413  lsqEnqCtrl.io.scommit := io.fromMem.get.scommit
414  lsqEnqCtrl.io.lqCancelCnt := io.fromMem.get.lqCancelCnt
415  lsqEnqCtrl.io.sqCancelCnt := io.fromMem.get.sqCancelCnt
416  io.memIO.get.lsqEnqIO <> lsqEnqCtrl.io.enqLsq
417}
418