test: add all controller tests

rtl/controller/tests/test_controller.py

@@ -1,5 +1,6 @@
 import cocotb
 from cocotb.clock import Clock
+from cocotb.handle import Immediate
 from cocotb.triggers import RisingEdge
 from cocotbext.axi import AxiLiteBus, AxiLiteMaster
 
@@ -126,20 +127,44 @@ async def simple_controller_start_check(dut):
 
 
 @cocotb.test()
-async def simple_dma_desc_register_write(dut):
+async def simple_dma_desc_status(dut):
     tb = TB(dut)
     await tb.reset()
 
-    # mock
+    await tb.write_reg(REG_DESC_READ_ADDR, 0xdead)
-    await tb.write_reg(REG_DESC_READ_ADDR, 0x0000_1000)
     await tb.write_reg(REG_DESC_READ_LEN, 64)
     await tb.write_reg(REG_DESC_READ_CONFIG, 0x0000_0001)
 
-    assert await tb.read_reg(REG_DESC_READ_ADDR) == 0x0000_1000
+    await tb.write_reg(REG_DESC_WRITE_ADDR, 0xbeef)
-    assert await tb.read_reg(REG_DESC_READ_LEN) == 64
+    await tb.write_reg(REG_DESC_WRITE_LEN_AND_TAG, 0x0005555)
 
     # W1S pulse: bit 3 = send_desc_read_o.
     await tb.write_reg(REG_CONTROL, 1 << CTRL_SEND_DESC_READ)
 
-    for _ in range(3):
+    await tb.write_reg(REG_CONTROL, 1 << CTRL_SEND_DESC_WRITE)
+
+    for _ in range(20):
         await RisingEdge(dut.ctrl_clk)
+
+    assert int(dut.desc_read_cmd_out.value) == 0x000000100040DEAD
+    assert int(dut.desc_write_cmd_out.value) == 0x0005555BEEF
+
+    # test status
+    dut.status_read_cmd_in.value = Immediate(123)
+    dut.status_write_cmd_in.value = Immediate(0xabcd90012345)
+    dut.valid_status_read.value = Immediate(1)
+    dut.valid_status_write.value = Immediate(1)
+
+    for _ in range(10):
+        await RisingEdge(dut.ctrl_clk)
+
+    # read status
+    await tb.write_reg(REG_CONTROL, 1 << CTRL_TAKE_STATUS_READ)
+    await tb.write_reg(REG_CONTROL, 1 << CTRL_TAKE_STATUS_WRITE)
+
+    for _ in range(10):
+        await RisingEdge(dut.ctrl_clk)
+
+    assert await tb.read_reg(REG_READ_STATUS) == 123
+    assert await tb.read_reg(REG_STATUS_WRITE_CONFIG) == 0xABCD900
+    assert await tb.read_reg(REG_STATUS_WRITE_LEN) == 0x12345