放弃当拍握手策略

src/main/scala/backBoard/pico/TLCDR.scala

@@ -191,7 +191,7 @@ trait TLCDRRx{ this: TLCDRBase =>
 
   rxFifo.reset := reset.asBool | isTLWriteSoftReset
 
-  rxFifo.io.deq.ready := isTLReadRxFifo
+  // rxFifo.io.deq.ready := isTLReadRxFifo
 
 
   when( isTLWriteSoftReset ){
@@ -217,9 +217,37 @@ class TLCDR()(implicit p: Parameters) extends TLCDRBase() with TLCDRTx with TLCD
     dirSel := io.mem.wdata
   }
 
-  io.mem.ready := 
-    ( io.mem.wstrb =/= 0.U & txFifo.io.enq.ready) | 
-    ( io.mem.wstrb === 0.U & Mux( io.mem.addr(4,0) === "h1c".U, rxFifo.io.deq.valid, true.B ) )
+  val isAck = RegInit(false.B)
+  val rdata = Reg(UInt(32.W))
+
+  when( io.mem.fire ){
+    isAck := false.B
+  } .elsewhen( io.mem.valid & ~isAck ){
+    when( io.mem.wstrb =/= 0.U & txFifo.io.enq.ready ){
+      isAck := true.B
+    } .otherwise{
+      when( io.mem.addr(4,0) === "h1c".U & rxFifo.io.deq.valid ){
+        isAck := true.B
+        rdata := rxFifo.io.deq.bits
+        
+      } .elsewhen( io.mem.addr(4,0) === "h18".U ){
+        isAck := true.B
+        rdata := rxLen
+      } .elsewhen( io.mem.addr(4,0) === "h0".U ){
+        isAck := true.B
+        rdata := Cat( isRxValid, isRxError, isTxBusy, isTxFull, isTxError)
+      }
+    }
+
+  }
+
+  rxFifo.io.deq.ready := io.mem.valid & ~isAck & io.mem.addr(4,0) === "h1c".U & rxFifo.io.deq.valid
+
+
+
+  io.mem.ready := isAck
+    // ( io.mem.wstrb =/= 0.U & txFifo.io.enq.ready) | 
+    // ( io.mem.wstrb === 0.U & Mux( io.mem.addr(4,0) === "h1c".U, rxFifo.io.deq.valid, true.B ) )
 
 
 
@@ -229,12 +257,12 @@ class TLCDR()(implicit p: Parameters) extends TLCDRBase() with TLCDRTx with TLCD
   io.interrupt(3) := intRxEnd
 
 
-  io.mem.rdata :=
-    Mux1H(Seq(
-      isTLReadStatus -> Cat( isRxValid, isRxError, isTxBusy, isTxFull, isTxError),
-      isTLReadRxLen  -> rxLen,
-      isTLReadRxFifo -> rxFifo.io.deq.bits
-    ))
+  io.mem.rdata := rdata
+    // Mux1H(Seq(
+    //   isTLReadStatus -> ,
+    //   isTLReadRxLen  -> rxLen,
+    //   isTLReadRxFifo -> rxFifo.io.deq.bits
+    // ))