Make resp and prot signals optional

cocotbext/axi/axi_channels.py

@@ -26,8 +26,8 @@ from .stream import define_stream
 
 # Write address channel
 AxiAWBus, AxiAWTransaction, AxiAWSource, AxiAWSink, AxiAWMonitor = define_stream("AxiAW",
-    signals=["awid", "awaddr", "awlen", "awsize", "awburst", "awprot", "awvalid", "awready"],
-    optional_signals=["awlock", "awcache", "awqos", "awregion", "awuser"],
+    signals=["awid", "awaddr", "awlen", "awsize", "awburst", "awvalid", "awready"],
+    optional_signals=["awlock", "awcache", "awprot", "awqos", "awregion", "awuser"],
     signal_widths={"awlen": 8, "awsize": 3, "awburst": 2, "awlock": 1,
         "awcache": 4, "awprot": 3, "awqos": 4, "awregion": 4}
 )
@@ -41,23 +41,23 @@ AxiWBus, AxiWTransaction, AxiWSource, AxiWSink, AxiWMonitor = define_stream("Axi
 
 # Write response channel
 AxiBBus, AxiBTransaction, AxiBSource, AxiBSink, AxiBMonitor = define_stream("AxiB",
-    signals=["bid", "bresp", "bvalid", "bready"],
-    optional_signals=["buser"],
+    signals=["bid", "bvalid", "bready"],
+    optional_signals=["bresp", "buser"],
     signal_widths={"bresp": 2}
 )
 
 # Read address channel
 AxiARBus, AxiARTransaction, AxiARSource, AxiARSink, AxiARMonitor = define_stream("AxiAR",
-    signals=["arid", "araddr", "arlen", "arsize", "arburst", "arprot", "arvalid", "arready"],
-    optional_signals=["arlock", "arcache", "arqos", "arregion", "aruser"],
+    signals=["arid", "araddr", "arlen", "arsize", "arburst", "arvalid", "arready"],
+    optional_signals=["arlock", "arcache", "arprot", "arqos", "arregion", "aruser"],
     signal_widths={"arlen": 8, "arsize": 3, "arburst": 2, "arlock": 1,
         "arcache": 4, "arprot": 3, "arqos": 4, "arregion": 4}
 )
 
 # Read data channel
 AxiRBus, AxiRTransaction, AxiRSource, AxiRSink, AxiRMonitor = define_stream("AxiR",
-    signals=["rid", "rdata", "rresp", "rlast", "rvalid", "rready"],
-    optional_signals=["ruser"],
+    signals=["rid", "rdata", "rlast", "rvalid", "rready"],
+    optional_signals=["rresp", "ruser"],
     signal_widths={"rresp": 2, "rlast": 1}
 )
 

cocotbext/axi/axi_master.py

@@ -177,6 +177,7 @@ class AxiMasterWrite(Reset):
 
         self.awlock_present = hasattr(self.bus.aw, "awlock")
         self.awcache_present = hasattr(self.bus.aw, "awcache")
+        self.awprot_present = hasattr(self.bus.aw, "awprot")
         self.awqos_present = hasattr(self.bus.aw, "awqos")
         self.awregion_present = hasattr(self.bus.aw, "awregion")
         self.awuser_present = hasattr(self.bus.aw, "awuser")
@@ -240,6 +241,9 @@ class AxiMasterWrite(Reset):
         if not self.awcache_present and cache != 0b0011:
             raise ValueError("awcache sideband signal value specified, but signal is not connected")
 
+        if not self.awprot_present and prot != AxiProt.NONSECURE:
+            raise ValueError("awprot sideband signal value specified, but signal is not connected")
+
         if not self.awqos_present and qos != 0:
             raise ValueError("awqos sideband signal value specified, but signal is not connected")
 
@@ -558,6 +562,7 @@ class AxiMasterRead(Reset):
 
         self.arlock_present = hasattr(self.bus.ar, "arlock")
         self.arcache_present = hasattr(self.bus.ar, "arcache")
+        self.arprot_present = hasattr(self.bus.ar, "arprot")
         self.arqos_present = hasattr(self.bus.ar, "arqos")
         self.arregion_present = hasattr(self.bus.ar, "arregion")
         self.aruser_present = hasattr(self.bus.ar, "aruser")
@@ -622,6 +627,9 @@ class AxiMasterRead(Reset):
         if not self.arcache_present and cache != 0b0011:
             raise ValueError("arcache sideband signal value specified, but signal is not connected")
 
+        if not self.arprot_present and prot != AxiProt.NONSECURE:
+            raise ValueError("arprot sideband signal value specified, but signal is not connected")
+
         if not self.arqos_present and qos != 0:
             raise ValueError("arqos sideband signal value specified, but signal is not connected")
 

cocotbext/axi/axil_channels.py

@@ -26,7 +26,8 @@ from .stream import define_stream
 
 # Write address channel
 AxiLiteAWBus, AxiLiteAWTransaction, AxiLiteAWSource, AxiLiteAWSink, AxiLiteAWMonitor = define_stream("AxiLiteAW",
-    signals=["awaddr", "awprot", "awvalid", "awready"],
+    signals=["awaddr", "awvalid", "awready"],
+    optional_signals=["awprot"],
     signal_widths={"awprot": 3}
 )
 
@@ -37,19 +38,22 @@ AxiLiteWBus, AxiLiteWTransaction, AxiLiteWSource, AxiLiteWSink, AxiLiteWMonitor
 
 # Write response channel
 AxiLiteBBus, AxiLiteBTransaction, AxiLiteBSource, AxiLiteBSink, AxiLiteBMonitor = define_stream("AxiLiteB",
-    signals=["bresp", "bvalid", "bready"],
+    signals=["bvalid", "bready"],
+    optional_signals=["bresp"],
     signal_widths={"bresp": 2}
 )
 
 # Read address channel
 AxiLiteARBus, AxiLiteARTransaction, AxiLiteARSource, AxiLiteARSink, AxiLiteARMonitor = define_stream("AxiLiteAR",
-    signals=["araddr", "arprot", "arvalid", "arready"],
+    signals=["araddr", "arvalid", "arready"],
+    optional_signals=["arprot"],
     signal_widths={"arprot": 3}
 )
 
 # Read data channel
 AxiLiteRBus, AxiLiteRTransaction, AxiLiteRSource, AxiLiteRSink, AxiLiteRMonitor = define_stream("AxiLiteR",
-    signals=["rdata", "rresp", "rvalid", "rready"],
+    signals=["rdata", "rvalid", "rready"],
+    optional_signals=["rresp"],
     signal_widths={"rresp": 2}
 )
 

cocotbext/axi/axil_master.py

@@ -79,6 +79,8 @@ class AxiLiteMasterWrite(Reset):
         self.byte_lanes = self.width // self.byte_size
         self.strb_mask = 2**self.byte_lanes-1
 
+        self.awprot_present = hasattr(self.bus.aw, "awprot")
+
         self.log.info("AXI lite master configuration:")
         self.log.info("  Address width: %d bits", len(self.aw_channel.bus.awaddr))
         self.log.info("  Byte size: %d bits", self.byte_size)
@@ -107,6 +109,9 @@ class AxiLiteMasterWrite(Reset):
         if not isinstance(event, Event):
             raise ValueError("Expected event object")
 
+        if not self.awprot_present and prot != AxiProt.NONSECURE:
+            raise ValueError("awprot sideband signal value specified, but signal is not connected")
+
         self.in_flight_operations += 1
         self._idle.clear()
 
@@ -311,6 +316,8 @@ class AxiLiteMasterRead(Reset):
         self.byte_size = 8
         self.byte_lanes = self.width // self.byte_size
 
+        self.arprot_present = hasattr(self.bus.ar, "arprot")
+
         self.log.info("AXI lite master configuration:")
         self.log.info("  Address width: %d bits", len(self.ar_channel.bus.araddr))
         self.log.info("  Byte size: %d bits", self.byte_size)
@@ -338,6 +345,9 @@ class AxiLiteMasterRead(Reset):
         if not isinstance(event, Event):
             raise ValueError("Expected event object")
 
+        if not self.arprot_present and prot != AxiProt.NONSECURE:
+            raise ValueError("arprot sideband signal value specified, but signal is not connected")
+
         self.in_flight_operations += 1
         self._idle.clear()