tests: Add option to verify CSRs after boot into stdby ctrl

Signed-off-by: Wiktoria Kuna <[email protected]>

Author: wkkuna

verification/cocotb/top/lib_i3c_top/boot.py

@@ -52,7 +52,7 @@ async def common_procedure(tb: I3CTopTestInterface):
     return core_config
 
 
-async def boot_init(tb: I3CTopTestInterface, timings=None):
+async def boot_init(tb: I3CTopTestInterface, timings=None, verify=False):
     """
     Boot sequence model should match the description in "Boot and Initialization" chapter of the documentation.
 
@@ -79,7 +79,7 @@ async def boot_init(tb: I3CTopTestInterface, timings=None):
     await setup_hci_thresholds(tb)
 
     # Start the device
-    await umbrella_stby_init(tb)
+    await umbrella_stby_init(tb, verify)
 
 
 async def check_version(tb):
@@ -193,7 +193,7 @@ async def define_supported_ccc(tb):
     pass
 
 
-async def umbrella_stby_init(tb):
+async def umbrella_stby_init(tb, verify=False):
     """
     Set the BCR bits and the DCR value in register STBY_CR_DEVICE_CHAR.
 
@@ -253,6 +253,48 @@ async def umbrella_stby_init(tb):
     #     1,
     # )
 
+    # Check if CSRs have been set properly
+    if verify:
+        mode = await tb.read_csr_field(
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_CONTROL.base_addr,
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_CONTROL.STBY_CR_ENABLE_INIT,
+        )
+        assert mode == 2
+
+        # Set static address and valid
+        static_addr = await tb.read_csr_field(
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_DEVICE_ADDR.base_addr,
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_DEVICE_ADDR.STATIC_ADDR,
+        )
+        assert static_addr == 0x5A
+
+        static_addr_valid = await tb.read_csr_field(
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_DEVICE_ADDR.base_addr,
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_DEVICE_ADDR.STATIC_ADDR_VALID,
+        )
+        assert static_addr_valid == 0x1
+
+        # Set static address and valid for virtual device
+        virt_static_addr = await tb.read_csr_field(
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_VIRT_DEVICE_ADDR.base_addr,
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_VIRT_DEVICE_ADDR.VIRT_STATIC_ADDR,
+        )
+        assert virt_static_addr == 0x5B
+
+        virt_static_addr_valid = await tb.read_csr_field(
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_VIRT_DEVICE_ADDR.base_addr,
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_VIRT_DEVICE_ADDR.VIRT_STATIC_ADDR_VALID,
+            0x1,
+        )
+        assert virt_static_addr_valid == 0x1
+
+        # Enable Target Interface
+        tgt_en = await tb.read_csr_field(
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_CONTROL.base_addr,
+            tb.reg_map.I3C_EC.STDBYCTRLMODE.STBY_CR_CONTROL.TARGET_XACT_ENABLE,
+        )
+        assert tgt_en == 1
+
 
 async def tti_init(tb):
     """

verification/cocotb/top/lib_i3c_top/test_i3c_target.py

@@ -37,7 +37,7 @@ async def runCocotb(*args, **kwargs):
     return wrapper
 
 
-async def test_setup(dut, fclk=100.0, fbus=12.5):
+async def test_setup(dut, fclk=100.0, fbus=12.5, verify_boot=True):
     """
     Sets up controller, target models and top-level core interface
     """
@@ -81,7 +81,7 @@ async def test_setup(dut, fclk=100.0, fbus=12.5):
     for k, v in timings.items():
         dut._log.info(f"{k} = {v}")
 
-    await boot_init(tb, timings)
+    await boot_init(tb, timings, verify_boot)
 
     # Set TTI queues thresholds
     await tb.write_csr_field(
@@ -287,7 +287,7 @@ async def test_i3c_target_ibi(dut):
     """
 
     # Setup
-    i3c_controller, i3c_target, tb = await test_setup(dut)
+    i3c_controller, i3c_target, tb = await test_setup(dut, verify_boot=True)
 
     target = i3c_controller.add_target(TARGET_ADDRESS)
     target.set_bcr_fields(ibi_req_capable=True, ibi_payload=True)
@@ -376,7 +376,7 @@ async def test_i3c_target_ibi_retry(dut):
     """
 
     # Setup
-    i3c_controller, i3c_target, tb = await test_setup(dut)
+    i3c_controller, i3c_target, tb = await test_setup(dut, verify_boot=True)
 
     # Enable indefinite IBI retries
     #  TTI.CONTROL.IBI_EN        = 1
@@ -452,7 +452,7 @@ async def test_i3c_target_ibi_data(dut):
     """
 
     # Setup
-    i3c_controller, i3c_target, tb = await test_setup(dut)
+    i3c_controller, i3c_target, tb = await test_setup(dut, verify_boot=True)
 
     target = i3c_controller.add_target(TARGET_ADDRESS)
     target.set_bcr_fields(ibi_req_capable=True, ibi_payload=True)