加入中断寄存器，加入两个32bits寄存器

src/main/scala/backBoard/ebus/RoCC2CDR.scala

@@ -317,7 +317,27 @@ trait RoCC2CDRImplLimitTimmer{ this: RoCC2CDRImplBase =>
 
 }
 
+trait RoCC2CDRImplOutTimmer{ this: RoCC2CDRImplBase =>
+  val isTxBusy: Seq[Bool]
 
+  val timeOutCnt = for( _ <- 0 until 2 ) yield { RegInit(0.U(32.W)) }
+  val isTLClearTimeOut  = for( _ <- 0 until 2 ) yield { Wire(Bool()) }
+  val isTLReadTimeOut = for( _ <- 0 until 2 ) yield { Wire(Bool()) }
+
+  val isTxClearTimeOut = for( i <- 0 until 2 ) yield { ~RegNext(isTxBusy(i)) & isTxBusy(i) }
+
+  for( i <- 0 until 2 ) {
+    when( isTLClearTimeOut(i) | isTxClearTimeOut(i) ){
+      timeOutCnt(i) := 0.U
+    } .otherwise{
+      timeOutCnt(i) := timeOutCnt(i) + 1.U
+    }
+  }
+
+
+
+
+}
 
 
 
@@ -328,7 +348,7 @@ class RoCC2CDRImpl(outer: RoCC2CDR)(implicit p: Parameters) extends RoCC2CDRImpl
 with RoCC2CDRImplTx with RoCC2CDRImplRx
 with RoCC2CDRImplIsLast
 with RoCC2CDRImplUserCRC
-with RoCC2CDRImplLimitTimmer
+with RoCC2CDRImplLimitTimmer with RoCC2CDRImplOutTimmer
 {
 
 
@@ -340,15 +360,6 @@ with RoCC2CDRImplLimitTimmer
   io.mem.s2_kill   := false.B
   io.mem.keep_clock_enabled := false.B
 
-
-
-
-
-
-  // io.interrupt = Output(Bool())
-  // io.exception = Input(Bool())
-
-
   io.fpu_req.valid := false.B
   io.fpu_req.bits  := DontCare
   io.fpu_resp.ready := true.B
@@ -372,46 +383,50 @@ with RoCC2CDRImplLimitTimmer
   isTLWriteTxLen(0)         := io.cmd.fire & io.cmd.bits.inst.funct === 1.U
   isTLWriteTxFifo(0)        := io.cmd.fire & io.cmd.bits.inst.funct === 2.U
   isTLReadTxCrc(0)          := io.cmd.fire & io.cmd.bits.inst.funct === 3.U
+  isTLClearTimeOut(0)       := io.cmd.fire & io.cmd.bits.inst.funct === 4.U & io.cmd.bits.inst.xs1
+  isTLReadTimeOut(0)        := io.cmd.fire & io.cmd.bits.inst.funct === 4.U & io.cmd.bits.inst.xd
 
-  isTLWriteSoftReset(1)     := io.cmd.fire & io.cmd.bits.inst.funct === 4.U
+  isTLWriteSoftReset(1)     := io.cmd.fire & io.cmd.bits.inst.funct === 5.U
-  isTLWriteTxLen(1)         := io.cmd.fire & io.cmd.bits.inst.funct === 5.U
+  isTLWriteTxLen(1)         := io.cmd.fire & io.cmd.bits.inst.funct === 6.U
-  isTLWriteTxFifo(1)        := io.cmd.fire & io.cmd.bits.inst.funct === 6.U
+  isTLWriteTxFifo(1)        := io.cmd.fire & io.cmd.bits.inst.funct === 7.U
-  isTLReadTxCrc(1)          := io.cmd.fire & io.cmd.bits.inst.funct === 7.U
+  isTLReadTxCrc(1)          := io.cmd.fire & io.cmd.bits.inst.funct === 8.U
+  isTLClearTimeOut(1)       := io.cmd.fire & io.cmd.bits.inst.funct === 9.U & io.cmd.bits.inst.xs1
+  isTLReadTimeOut(1)        := io.cmd.fire & io.cmd.bits.inst.funct === 9.U & io.cmd.bits.inst.xd
 
-  isTLWriteSoftReset(2)     := io.cmd.fire & io.cmd.bits.inst.funct === 8.U
+  isTLWriteSoftReset(2)     := io.cmd.fire & io.cmd.bits.inst.funct === 10.U
-  isTLReadRxLen(0)          := io.cmd.fire & io.cmd.bits.inst.funct === 9.U
+  isTLReadRxLen(0)          := io.cmd.fire & io.cmd.bits.inst.funct === 11.U
-  isTLReadRxFifo(0)         := io.cmd.fire & io.cmd.bits.inst.funct === 10.U
+  isTLReadRxFifo(0)         := io.cmd.fire & io.cmd.bits.inst.funct === 12.U
-  isTLReadRxCrc(0)          := io.cmd.fire & io.cmd.bits.inst.funct === 11.U
+  isTLReadRxCrc(0)          := io.cmd.fire & io.cmd.bits.inst.funct === 13.U
-  isTLWriteLimitTimerAim(0) := io.cmd.fire & io.cmd.bits.inst.funct === 12.U
+  isTLWriteLimitTimerAim(0) := io.cmd.fire & io.cmd.bits.inst.funct === 14.U
-  isTLWriteLimitTxPair(0)   := io.cmd.fire & io.cmd.bits.inst.funct === 13.U
+  isTLWriteLimitTxPair(0)   := io.cmd.fire & io.cmd.bits.inst.funct === 15.U
   
-  isTLWriteSoftReset(3)     := io.cmd.fire & io.cmd.bits.inst.funct === 14.U
+  isTLWriteSoftReset(3)     := io.cmd.fire & io.cmd.bits.inst.funct === 16.U
-  isTLReadRxLen(1)          := io.cmd.fire & io.cmd.bits.inst.funct === 15.U
+  isTLReadRxLen(1)          := io.cmd.fire & io.cmd.bits.inst.funct === 17.U
-  isTLReadRxFifo(1)         := io.cmd.fire & io.cmd.bits.inst.funct === 16.U
+  isTLReadRxFifo(1)         := io.cmd.fire & io.cmd.bits.inst.funct === 18.U
-  isTLReadRxCrc(1)          := io.cmd.fire & io.cmd.bits.inst.funct === 17.U
+  isTLReadRxCrc(1)          := io.cmd.fire & io.cmd.bits.inst.funct === 19.U
-  isTLWriteLimitTimerAim(1) := io.cmd.fire & io.cmd.bits.inst.funct === 18.U
+  isTLWriteLimitTimerAim(1) := io.cmd.fire & io.cmd.bits.inst.funct === 20.U
-  isTLWriteLimitTxPair(1)   := io.cmd.fire & io.cmd.bits.inst.funct === 19.U
+  isTLWriteLimitTxPair(1)   := io.cmd.fire & io.cmd.bits.inst.funct === 21.U
   
-  isTLReadStatus         := io.cmd.fire & io.cmd.bits.inst.funct === 20.U
+  isTLReadStatus         := io.cmd.fire & io.cmd.bits.inst.funct === 22.U
-  isReadIsLast           := io.cmd.fire & io.cmd.bits.inst.funct === 21.U
+  val isTLReadInterrupt   = io.cmd.fire & io.cmd.bits.inst.funct === 23.U & io.cmd.bits.inst.xd
+  val isTLClearInterrupt  = io.cmd.fire & io.cmd.bits.inst.funct === 23.U & io.cmd.bits.inst.xs1
+  isReadIsLast           := io.cmd.fire & io.cmd.bits.inst.funct === 24.U
 
-  // int(0) := intTxEnd(0)
+  val interruptReg = RegInit(0.U(32.W))
-  // int(1) := intTxEnd(1)
 
-  // int(2) := intRxError(0)
+  when( isTLClearInterrupt ){
-  // int(3) := intRxError(1)
+    interruptReg := interruptReg & ~wdata
+  } .otherwise{
+    interruptReg := interruptReg | Cat(
+      intTxEnd(1), intTxEnd(0),
+      intRxError(1), intRxError(0),
+      intRxStart(1), intRxStart(0),
+      intRxEnd(1), intRxEnd(0),
+      intTxFifoDeq(1), intTxFifoDeq(0),
+      intRxFifoEnq(1), intRxFifoEnq(0)
+    )
+  }
 
-  // int(4) := intRxStart(0)
-  // int(5) := intRxStart(1)
-
-  // int(6) := intRxEnd(0)
-  // int(7) := intRxEnd(1)
-
-  // int(8) := intTxFifoDeq(0)
-  // int(9) := intTxFifoDeq(1)
-
-  // int(10) := intRxFifoEnq(0)
-  // int(11) := intRxFifoEnq(1)
 
   io.interrupt :=  
     intTxEnd(0) |
@@ -481,8 +496,15 @@ with RoCC2CDRImplLimitTimmer
     rdata := rxCrc(0).io.crc
   } .elsewhen(isTLReadRxCrc(1)){
     rdata := rxCrc(1).io.crc
+  } .elsewhen(isTLReadInterrupt){
+    rdata := interruptReg
+  } .elsewhen(isTLReadTimeOut(0)){
+    rdata := timeOutCnt(0)
+  } .elsewhen(isTLReadTimeOut(1)){
+    rdata := timeOutCnt(1)
   }
 
+
  when( io.resp.fire ){ //允许连续触发
     respValid := false.B 
   } .elsewhen( isTLReadStatus ){
@@ -505,7 +527,14 @@ with RoCC2CDRImplLimitTimmer
     respValid := true.B
   } .elsewhen(isTLReadRxCrc(1)){
     respValid := true.B
+  } .elsewhen(isTLReadInterrupt){
+    respValid := true.B
+  } .elsewhen(isTLReadTimeOut(0)){
+    respValid := true.B
+  } .elsewhen(isTLReadTimeOut(1)){
+    respValid := true.B
   }
+
 }