handle hready in ahb writing

bus_env/bus_agent/bus_ahb_driver.py

@@ -79,13 +79,18 @@ async def data_phase(self, tr):
         uvm_info(
             self.tag,
             f"tr at the start of data phase {tr.convert2string()} sequence id {tr.id}",
-            UVM_HIGH,
+            UVM_LOW,
         )
         if tr.kind == bus_item.WRITE:
             self.vif.HWDATA.value = tr.data
+            await NextTimeStep()
+            if self.vif.HREADYOUT.value == 0:
+                self.vif.HREADY.value = 0b0
             await self.drive_delay()
             while self.vif.HREADYOUT.value == 0:
+                self.vif.HREADY.value = 0b0
                 await self.drive_delay()
+            self.vif.HREADY.value = 0b1
         else:
             # for reading just wait until the data is ready
             if self.vif.HREADYOUT.value == 0:

bus_env/bus_regs.py

@@ -233,24 +233,24 @@ def write_reg_value(self, reg, value, mask=0xFFFFFFFF, force_write=False):
             )
             cocotb.scheduler.add(self.update_delayed_reg(address))
 
-    def __read_reg_value(self, reg, delayed=False):
+    def __read_reg_value(self, reg, delayed=False,mask = 0xFFFF):
         if type(reg) is int:
             address = reg
         elif type(reg) is str:
             address = self.reg_name_to_address[reg]
         else:
             uvm_error(self.tag, f"Invalid reg type: {type(reg)} for read")
-        address = address & 0xFFFF
+        address = address & mask
         if delayed:
             return self.regs[address]["delayed_val"]
         else:
             return self.regs[address]["val"]
 
-    def read_reg_value(self, reg):
-        return self.__read_reg_value(reg)
+    def read_reg_value(self, reg, delayed=False,mask = 0xFFFF):
+        return self.__read_reg_value(reg, mask=mask, delayed=delayed)
 
-    def read_reg_value_delayed(self, reg):
-        return self.__read_reg_value(reg, delayed=True)
+    def read_reg_value_delayed(self, reg, mask=0xFFFF):
+        return self.__read_reg_value(reg, delayed=True, mask=mask)
 
     # Function to replace parameter values in the data
     def replace_parameters(self, data, parameter_values):