Add Intel Avalon MM cpuif. #40

src/peakrdl_regblock/cpuif/avalon/__init__.py

@@ -0,0 +1,37 @@
+from ..base import CpuifBase
+from ...utils import clog2
+
+class Avalon_Cpuif(CpuifBase):
+    template_path = "avalon_tmpl.sv"
+
+    @property
+    def port_declaration(self) -> str:
+        return "avalon_mm_intf.agent avalon"
+
+    def signal(self, name:str) -> str:
+        return "avalon." + name
+
+    @property
+    def word_addr_width(self) -> int:
+        # Avalon agents use word addressing, therefore address width is reduced
+        return self.addr_width - clog2(self.data_width_bytes)
+
+class Avalon_Cpuif_flattened(Avalon_Cpuif):
+    @property
+    def port_declaration(self) -> str:
+        lines = [
+            "input wire " + self.signal("read"),
+            "input wire " + self.signal("write"),
+            "output logic " + self.signal("waitrequest"),
+            f"input wire [{self.word_addr_width-1}:0] " + self.signal("address"),
+            f"input wire [{self.data_width-1}:0] " + self.signal("writedata"),
+            f"input wire [{self.data_width_bytes-1}:0] " + self.signal("byteenable"),
+            "output logic " + self.signal("readdatavalid"),
+            "output logic " + self.signal("writeresponsevalid"),
+            f"output logic [{self.data_width-1}:0] " + self.signal("readdata"),
+            "output logic [1:0] " + self.signal("response"),
+        ]
+        return ",\n".join(lines)
+
+    def signal(self, name:str) -> str:
+        return "avalon_" + name