Release v0.1.20

Signed-off-by: Alex Forencich <alex@alexforencich.com>

.github/workflows/regression-tests.yml

@@ -9,13 +9,13 @@ jobs:
     
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v3
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 

README.md

@@ -467,6 +467,7 @@ To use these modules, import the one you need and connect it to the DUT:
         tx_bus=AxiStreamBus.from_prefix(dut, "tx_axis"),
         tx_ptp_time=dut.tx_ptp_time,
         tx_ptp_ts=dut.tx_ptp_ts,
+        tx_ptp_ts_tag=dut.tx_ptp_ts_tag,
         tx_ptp_ts_valid=dut.tx_ptp_ts_valid,
         rx_clk=dut.rx_clk,
         rx_rst=dut.rx_rst,
@@ -492,6 +493,8 @@ To receive data, call `recv()` or `recv_nowait()`.  Optionally call `wait()` to
 
     data = await mac.tx.recv()
 
+PTP timestamping requires free-running PTP clocks driving the PTP time inputs, synchronous with the corresponding MAC clocks.  The values of these fields are then captured when the frame SFD is transferred and returned either on tuser (for received frames) or on a separate streaming interface (for transmitted frames).  Additionally, on the transmit path, a tag value from tuser is returned along with the timestamp.
+
 #### Signals
 
 * `tdata`: payload data, must be a multiple of 8 bits
@@ -499,9 +502,10 @@ To receive data, call `recv()` or `recv_nowait()`.  Optionally call `wait()` to
 * `tready`: indicates sink is ready for data (tx only)
 * `tlast`: marks the last cycle of a frame
 * `tkeep`: qualifies data byte, data bus width must be evenly divisible by `tkeep` signal width
-* `tuser`: user data, carries frame error mark and captured receive PTP timestamp
+* `tuser`: user data, carries frame error mark and captured receive PTP timestamp (RX) or PTP timestamp tag (TX)
-* `ptp_time`: PTP time input from PHC, captured into `ptp_timestamp` field coincident with transfer of frame SFD and output on `ptp_ts`
+* `ptp_time`: PTP time input from PHC, captured into `ptp_timestamp` field coincident with transfer of frame SFD and output on `ptp_ts` (TX) or `tuser` (RX)
 * `ptp_ts`: captured transmit PTP timestamp
+* `ptp_ts_tag`: captured transmit PTP timestamp tag
 * `ptp_ts_valid`: qualifies captured transmit PTP timestamp
 
 #### Constructor parameters (`EthMacRx` and `EthMacTx`):
@@ -510,7 +514,8 @@ To receive data, call `recv()` or `recv_nowait()`.  Optionally call `wait()` to
 * _clock_: clock signal
 * _reset_: reset signal (optional)
 * _ptp_time_: PTP time input from PHC (optional)
-* _ptp_ts_: PTP timestamp output (optional) (tx)
+* _ptp_ts_: PTP timestamp (optional) (tx)
+* _ptp_ts_tag_: PTP timestamp tag (optional) (tx)
 * _ptp_ts_valid_: PTP timestamp valid (optional) (tx)
 * _reset_active_level_: reset active level (optional, default `True`)
 * _ifg_: IFG size in byte times (optional, default `12`)
@@ -522,7 +527,8 @@ To receive data, call `recv()` or `recv_nowait()`.  Optionally call `wait()` to
 * _tx_clk_: transmit clock
 * _tx_rst_: transmit reset (optional)
 * _tx_ptp_time_: transmit PTP time input from PHC (optional)
-* _tx_ptp_ts_: transmit PTP timestamp output (optional)
+* _tx_ptp_ts_: transmit PTP timestamp (optional)
+* _tx_ptp_ts_tag_: transmit PTP timestamp tag (optional)
 * _tx_ptp_ts_valid_: transmit PTP timestamp valid (optional)
 * _rx_bus_: `AxiStreamBus` object containing receive AXI stream interface signals
 * _rx_clk_: receive clock
@@ -565,6 +571,7 @@ Attributes:
 * `sim_time_start`: simulation time of first transfer cycle of frame.
 * `sim_time_sfd`: simulation time at which the SFD was transferred.
 * `sim_time_end`: simulation time of last transfer cycle of frame.
+* `ptp_tag`: PTP timestamp tag for transmitted frames.
 * `ptp_timestamp`: captured value of `ptp_time` at frame SFD
 * `tx_complete`: event or callable triggered when frame is transmitted.
 

cocotbext/eth/constants.py

@@ -42,12 +42,12 @@ class XgmiiCtrl(enum.IntEnum):
     TERM   = 0xfd
     ERROR  = 0xfe
     SEQ_OS = 0x9c
-    RES0   = 0x1c
+    RES_0  = 0x1c
-    RES1   = 0x3c
+    RES_1  = 0x3c
-    RES2   = 0x7c
+    RES_2  = 0x7c
-    RES3   = 0xbc
+    RES_3  = 0xbc
-    RES4   = 0xdc
+    RES_4  = 0xdc
-    RES5   = 0xf7
+    RES_5  = 0xf7
     SIG_OS = 0x5c
 
 
@@ -93,3 +93,41 @@ class BaseRBlockType(enum.IntEnum):
     TERM_5   = 0xd2  # C7 C6    D4 D3 D2 D1 D0 BT
     TERM_6   = 0xe1  # C7    D5 D4 D3 D2 D1 D0 BT
     TERM_7   = 0xff  #    D6 D5 D4 D3 D2 D1 D0 BT
+
+
+xgmii_ctrl_to_baser_mapping = {
+    XgmiiCtrl.IDLE:   BaseRCtrl.IDLE,
+    XgmiiCtrl.LPI:    BaseRCtrl.LPI,
+    XgmiiCtrl.ERROR:  BaseRCtrl.ERROR,
+    XgmiiCtrl.RES_0:  BaseRCtrl.RES_0,
+    XgmiiCtrl.RES_1:  BaseRCtrl.RES_1,
+    XgmiiCtrl.RES_2:  BaseRCtrl.RES_2,
+    XgmiiCtrl.RES_3:  BaseRCtrl.RES_3,
+    XgmiiCtrl.RES_4:  BaseRCtrl.RES_4,
+    XgmiiCtrl.RES_5:  BaseRCtrl.RES_5,
+}
+
+
+baser_ctrl_to_xgmii_mapping = {
+    BaseRCtrl.IDLE:   XgmiiCtrl.IDLE,
+    BaseRCtrl.LPI:    XgmiiCtrl.LPI,
+    BaseRCtrl.ERROR:  XgmiiCtrl.ERROR,
+    BaseRCtrl.RES_0:  XgmiiCtrl.RES_0,
+    BaseRCtrl.RES_1:  XgmiiCtrl.RES_1,
+    BaseRCtrl.RES_2:  XgmiiCtrl.RES_2,
+    BaseRCtrl.RES_3:  XgmiiCtrl.RES_3,
+    BaseRCtrl.RES_4:  XgmiiCtrl.RES_4,
+    BaseRCtrl.RES_5:  XgmiiCtrl.RES_5,
+}
+
+
+block_type_term_lane_mapping = {
+    BaseRBlockType.TERM_0:  0,
+    BaseRBlockType.TERM_1:  1,
+    BaseRBlockType.TERM_2:  2,
+    BaseRBlockType.TERM_3:  3,
+    BaseRBlockType.TERM_4:  4,
+    BaseRBlockType.TERM_5:  5,
+    BaseRBlockType.TERM_6:  6,
+    BaseRBlockType.TERM_7:  7,
+}

cocotbext/eth/eth_mac.py

@@ -49,6 +49,7 @@ class EthMacFrame:
         self.sim_time_sfd = None
         self.sim_time_end = None
         self.ptp_timestamp = None
+        self.ptp_tag = None
         self.tx_complete = None
 
         if type(data) is EthMacFrame:
@@ -57,6 +58,7 @@ class EthMacFrame:
             self.sim_time_sfd = data.sim_time_sfd
             self.sim_time_end = data.sim_time_end
             self.ptp_timestamp = data.ptp_timestamp
+            self.ptp_tag = data.ptp_tag
             self.tx_complete = data.tx_complete
         else:
             self.data = bytearray(data)
@@ -104,7 +106,8 @@ class EthMacFrame:
             f"sim_time_start={self.sim_time_start!r}, "
             f"sim_time_sfd={self.sim_time_sfd!r}, "
             f"sim_time_end={self.sim_time_end!r}, "
-            f"ptp_timestamp={self.ptp_timestamp!r})"
+            f"ptp_timestamp={self.ptp_timestamp!r}, "
+            f"ptp_tag={self.ptp_tag!r})"
         )
 
     def __len__(self):
@@ -118,7 +121,7 @@ class EthMacFrame:
 
 
 class EthMacTx(Reset):
-    def __init__(self, bus, clock, reset=None, ptp_time=None, ptp_ts=None, ptp_ts_valid=None,
+    def __init__(self, bus, clock, reset=None, ptp_time=None, ptp_ts=None, ptp_ts_tag=None, ptp_ts_valid=None,
             reset_active_level=True, ifg=12, speed=1000e6, *args, **kwargs):
 
         self.bus = bus
@@ -126,6 +129,7 @@ class EthMacTx(Reset):
         self.reset = reset
         self.ptp_time = ptp_time
         self.ptp_ts = ptp_ts
+        self.ptp_ts_tag = ptp_ts_tag
         self.ptp_ts_valid = ptp_ts_valid
         self.ifg = ifg
         self.speed = speed
@@ -189,6 +193,8 @@ class EthMacTx(Reset):
 
         if self.ptp_ts:
             self.ptp_ts.setimmediatevalue(0)
+        if self.ptp_ts_tag:
+            self.ptp_ts_tag.setimmediatevalue(0)
         if self.ptp_ts_valid:
             self.ptp_ts_valid.setimmediatevalue(0)
 
@@ -247,7 +253,7 @@ class EthMacTx(Reset):
                 self._run_ts_cr = None
 
             if self.ptp_ts_valid:
-                self.ptp_ts_valid <= 0
+                self.ptp_ts_valid.value = 0
 
             self.active = False
 
@@ -256,9 +262,9 @@ class EthMacTx(Reset):
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
             if self._run_ts_cr is None and self.ptp_ts:
-                self._run_ts_cr = cocotb.fork(self._run_ts())
+                self._run_ts_cr = cocotb.start_soon(self._run_ts())
 
     async def _run(self):
         frame = None
@@ -278,7 +284,8 @@ class EthMacTx(Reset):
 
             if self.ptp_time:
                 frame.ptp_timestamp = self.ptp_time.value.integer
-                self.ts_queue.put_nowait(frame.ptp_timestamp)
+                frame.ptp_tag = cycle.tuser.integer >> 1
+                self.ts_queue.put_nowait((frame.ptp_timestamp, frame.ptp_tag))
 
             # process frame data
             while True:
@@ -315,14 +322,18 @@ class EthMacTx(Reset):
             await Timer(self.time_scale*self.ifg*8//self.speed, 'step')
 
     async def _run_ts(self):
+        clock_edge_event = RisingEdge(self.clock)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
-            self.ptp_ts_valid <= 0
+            self.ptp_ts_valid.value = 0
 
             if not self.ts_queue.empty():
-                ts = self.ts_queue.get_nowait()
+                ts, tag = self.ts_queue.get_nowait()
-                self.ptp_ts <= ts
+                self.ptp_ts.value = ts
-                self.ptp_ts_valid <= 1
+                if self.ptp_ts_tag is not None:
+                    self.ptp_ts_tag.value = tag
+                self.ptp_ts_valid.value = 1
 
 
 class EthMacRx(Reset):
@@ -466,7 +477,7 @@ class EthMacRx(Reset):
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
@@ -532,13 +543,13 @@ class EthMacRx(Reset):
 
 
 class EthMac:
-    def __init__(self, tx_bus=None, tx_clk=None, tx_rst=None, tx_ptp_time=None, tx_ptp_ts=None, tx_ptp_ts_valid=None,
+    def __init__(self, tx_bus=None, tx_clk=None, tx_rst=None, tx_ptp_time=None, tx_ptp_ts=None, tx_ptp_ts_tag=None,
-            rx_bus=None, rx_clk=None, rx_rst=None, rx_ptp_time=None,
+            tx_ptp_ts_valid=None, rx_bus=None, rx_clk=None, rx_rst=None, rx_ptp_time=None,
             reset_active_level=True, ifg=12, speed=1000e6, *args, **kwargs):
 
         super().__init__(*args, **kwargs)
 
-        self.tx = EthMacTx(tx_bus, tx_clk, tx_rst, tx_ptp_time, tx_ptp_ts, tx_ptp_ts_valid,
+        self.tx = EthMacTx(tx_bus, tx_clk, tx_rst, tx_ptp_time, tx_ptp_ts, tx_ptp_ts_tag, tx_ptp_ts_valid,
             reset_active_level=reset_active_level, ifg=ifg, speed=speed)
         self.rx = EthMacRx(rx_bus, rx_clk, rx_rst, rx_ptp_time,
             reset_active_level=reset_active_level, ifg=ifg, speed=speed)

cocotbext/eth/gmii.py

@@ -157,6 +157,7 @@ class GmiiSource(Reset):
         self.current_frame = None
         self.idle_event = Event()
         self.idle_event.set()
+        self.active_event = Event()
 
         self.ifg = 12
         self.mii_mode = False
@@ -189,6 +190,7 @@ class GmiiSource(Reset):
         frame = GmiiFrame(frame)
         await self.queue.put(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -198,6 +200,7 @@ class GmiiSource(Reset):
         frame = GmiiFrame(frame)
         self.queue.put_nowait(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -225,6 +228,7 @@ class GmiiSource(Reset):
             frame.handle_tx_complete()
         self.dequeue_event.set()
         self.idle_event.set()
+        self.active_event.clear()
         self.queue_occupancy_bytes = 0
         self.queue_occupancy_frames = 0
 
@@ -239,10 +243,10 @@ class GmiiSource(Reset):
                 self._run_cr = None
 
             self.active = False
-            self.data <= 0
+            self.data.value = 0
             if self.er is not None:
-                self.er <= 0
+                self.er.value = 0
-            self.dv <= 0
+            self.dv.value = 0
 
             if self.current_frame:
                 self.log.warning("Flushed transmit frame during reset: %s", self.current_frame)
@@ -251,10 +255,11 @@ class GmiiSource(Reset):
 
             if self.queue.empty():
                 self.idle_event.set()
+                self.active_event.clear()
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
@@ -264,8 +269,14 @@ class GmiiSource(Reset):
         ifg_cnt = 0
         self.active = False
 
+        clock_edge_event = RisingEdge(self.clock)
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             if self.enable is None or self.enable.value:
                 if ifg_cnt > 0:
@@ -308,10 +319,10 @@ class GmiiSource(Reset):
                     d = frame_data[frame_offset]
                     if frame.sim_time_sfd is None and d in (EthPre.SFD, 0xD):
                         frame.sim_time_sfd = get_sim_time()
-                    self.data <= d
+                    self.data.value = d
                     if self.er is not None:
-                        self.er <= frame_error[frame_offset]
+                        self.er.value = frame_error[frame_offset]
-                    self.dv <= 1
+                    self.dv.value = 1
                     frame_offset += 1
 
                     if frame_offset >= len(frame_data):
@@ -321,12 +332,19 @@ class GmiiSource(Reset):
                         frame = None
                         self.current_frame = None
                 else:
-                    self.data <= 0
+                    self.data.value = 0
                     if self.er is not None:
-                        self.er <= 0
+                        self.er.value = 0
-                    self.dv <= 0
+                    self.dv.value = 0
                     self.active = False
+
+                    if ifg_cnt == 0 and self.queue.empty():
                         self.idle_event.set()
+                        self.active_event.clear()
+                        await self.active_event.wait()
+
+            elif self.enable is not None and not self.enable.value:
+                await enable_event
 
 
 class GmiiSink(Reset):
@@ -422,14 +440,22 @@ class GmiiSink(Reset):
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
         self.active = False
 
+        clock_edge_event = RisingEdge(self.clock)
+
+        active_event = RisingEdge(self.dv)
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             if self.enable is None or self.enable.value:
                 d_val = self.data.value.integer
@@ -488,6 +514,12 @@ class GmiiSink(Reset):
                     frame.data.append(d_val)
                     frame.error.append(er_val)
 
+                if not dv_val:
+                    await active_event
+
+            elif self.enable is not None and not self.enable.value:
+                await enable_event
+
 
 class GmiiPhy:
     def __init__(self, txd, tx_er, tx_en, tx_clk, gtx_clk, rxd, rx_er, rx_dv, rx_clk,
@@ -517,12 +549,12 @@ class GmiiPhy:
             self._clock_cr.kill()
 
         if self.speed == 1000e6:
-            self._clock_cr = cocotb.fork(self._run_clocks(8*1e9/self.speed))
+            self._clock_cr = cocotb.start_soon(self._run_clocks(8*1e9/self.speed))
             self.tx.mii_mode = False
             self.rx.mii_mode = False
             self.tx.clock = self.gtx_clk
         else:
-            self._clock_cr = cocotb.fork(self._run_clocks(4*1e9/self.speed))
+            self._clock_cr = cocotb.start_soon(self._run_clocks(4*1e9/self.speed))
             self.tx.mii_mode = True
             self.rx.mii_mode = True
             self.tx.clock = self.tx_clk
@@ -536,8 +568,8 @@ class GmiiPhy:
 
         while True:
             await t
-            self.rx_clk <= 1
+            self.rx_clk.value = 1
-            self.tx_clk <= 1
+            self.tx_clk.value = 1
             await t
-            self.rx_clk <= 0
+            self.rx_clk.value = 0
-            self.tx_clk <= 0
+            self.tx_clk.value = 0

cocotbext/eth/mii.py

@@ -59,6 +59,7 @@ class MiiSource(Reset):
         self.current_frame = None
         self.idle_event = Event()
         self.idle_event.set()
+        self.active_event = Event()
 
         self.ifg = 12
 
@@ -90,6 +91,7 @@ class MiiSource(Reset):
         frame = GmiiFrame(frame)
         await self.queue.put(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -99,6 +101,7 @@ class MiiSource(Reset):
         frame = GmiiFrame(frame)
         self.queue.put_nowait(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -126,6 +129,7 @@ class MiiSource(Reset):
             frame.handle_tx_complete()
         self.dequeue_event.set()
         self.idle_event.set()
+        self.active_event.clear()
         self.queue_occupancy_bytes = 0
         self.queue_occupancy_frames = 0
 
@@ -140,10 +144,10 @@ class MiiSource(Reset):
                 self._run_cr = None
 
             self.active = False
-            self.data <= 0
+            self.data.value = 0
             if self.er is not None:
-                self.er <= 0
+                self.er.value = 0
-            self.dv <= 0
+            self.dv.value = 0
 
             if self.current_frame:
                 self.log.warning("Flushed transmit frame during reset: %s", self.current_frame)
@@ -152,10 +156,11 @@ class MiiSource(Reset):
 
             if self.queue.empty():
                 self.idle_event.set()
+                self.active_event.clear()
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
@@ -165,8 +170,14 @@ class MiiSource(Reset):
         ifg_cnt = 0
         self.active = False
 
+        clock_edge_event = RisingEdge(self.clock)
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             if self.enable is None or self.enable.value:
                 if ifg_cnt > 0:
@@ -202,10 +213,10 @@ class MiiSource(Reset):
                     d = frame_data[frame_offset]
                     if frame.sim_time_sfd is None and d == 0xD:
                         frame.sim_time_sfd = get_sim_time()
-                    self.data <= d
+                    self.data.value = d
                     if self.er is not None:
-                        self.er <= frame_error[frame_offset]
+                        self.er.value = frame_error[frame_offset]
-                    self.dv <= 1
+                    self.dv.value = 1
                     frame_offset += 1
 
                     if frame_offset >= len(frame_data):
@@ -215,12 +226,19 @@ class MiiSource(Reset):
                         frame = None
                         self.current_frame = None
                 else:
-                    self.data <= 0
+                    self.data.value = 0
                     if self.er is not None:
-                        self.er <= 0
+                        self.er.value = 0
-                    self.dv <= 0
+                    self.dv.value = 0
                     self.active = False
+
+                    if ifg_cnt == 0 and self.queue.empty():
                         self.idle_event.set()
+                        self.active_event.clear()
+                        await self.active_event.wait()
+
+            elif self.enable is not None and not self.enable.value:
+                await enable_event
 
 
 class MiiSink(Reset):
@@ -313,14 +331,22 @@ class MiiSink(Reset):
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
         self.active = False
 
+        clock_edge_event = RisingEdge(self.clock)
+
+        active_event = RisingEdge(self.dv)
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             if self.enable is None or self.enable.value:
                 d_val = self.data.value.integer
@@ -374,6 +400,12 @@ class MiiSink(Reset):
                     frame.data.append(d_val)
                     frame.error.append(er_val)
 
+                if not dv_val:
+                    await active_event
+
+            elif self.enable is not None and not self.enable.value:
+                await enable_event
+
 
 class MiiPhy:
     def __init__(self, txd, tx_er, tx_en, tx_clk, rxd, rx_er, rx_dv, rx_clk, reset=None,
@@ -402,7 +434,7 @@ class MiiPhy:
         if self._clock_cr is not None:
             self._clock_cr.kill()
 
-        self._clock_cr = cocotb.fork(self._run_clocks(4*1e9/self.speed))
+        self._clock_cr = cocotb.start_soon(self._run_clocks(4*1e9/self.speed))
 
     async def _run_clocks(self, period):
         half_period = get_sim_steps(period / 2.0, 'ns')
@@ -410,8 +442,8 @@ class MiiPhy:
 
         while True:
             await t
-            self.tx_clk <= 1
+            self.tx_clk.value = 1
-            self.rx_clk <= 1
+            self.rx_clk.value = 1
             await t
-            self.tx_clk <= 0
+            self.tx_clk.value = 0
-            self.rx_clk <= 0
+            self.rx_clk.value = 0

cocotbext/eth/ptp.py

@@ -195,28 +195,30 @@ class PtpClock(Reset):
             self.ts_64_fns = 0
             self.drift_cnt = 0
             if self.ts_96 is not None:
-                self.ts_96 <= 0
+                self.ts_96.value = 0
             if self.ts_64 is not None:
-                self.ts_64 <= 0
+                self.ts_64.value = 0
             if self.ts_step is not None:
-                self.ts_step <= 0
+                self.ts_step.value = 0
             if self.pps is not None:
-                self.pps <= 0
+                self.pps.value = 0
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
+        clock_edge_event = RisingEdge(self.clock)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             if self.ts_step is not None:
-                self.ts_step <= self.ts_updated
+                self.ts_step.value = self.ts_updated
                 self.ts_updated = False
 
             if self.pps is not None:
-                self.pps <= 0
+                self.pps.value = 0
 
             # increment 96 bit timestamp
             if self.ts_96 is not None or self.pps is not None:
@@ -229,13 +231,13 @@ class PtpClock(Reset):
                     self.ts_96_s += 1
                     t -= (1000000000 << 16)
                     if self.pps is not None:
-                        self.pps <= 1
+                        self.pps.value = 1
 
                 self.ts_96_fns = t & 0xffff
                 self.ts_96_ns = t >> 16
 
                 if self.ts_96 is not None:
-                    self.ts_96 <= (self.ts_96_s << 48) | (self.ts_96_ns << 16) | (self.ts_96_fns)
+                    self.ts_96.value = (self.ts_96_s << 48) | (self.ts_96_ns << 16) | (self.ts_96_fns)
 
             # increment 64 bit timestamp
             if self.ts_64 is not None:
@@ -247,7 +249,7 @@ class PtpClock(Reset):
                 self.ts_64_fns = t & 0xffff
                 self.ts_64_ns = t >> 16
 
-                self.ts_64 <= (self.ts_64_ns << 16) | self.ts_64_fns
+                self.ts_64.value = (self.ts_64_ns << 16) | self.ts_64_fns
 
             if self.drift_rate:
                 if self.drift_cnt > 0:
@@ -286,9 +288,9 @@ class PtpClockSimTime:
         if self.ts_64 is not None:
             self.ts_64.setimmediatevalue(0)
         if self.pps is not None:
-            self.pps <= 0
+            self.pps.value = 0
 
-        self._run_cr = cocotb.fork(self._run())
+        self._run_cr = cocotb.start_soon(self._run())
 
     def get_ts_96(self):
         return (self.ts_96_s << 48) | (self.ts_96_ns << 16) | self.ts_96_fns
@@ -309,8 +311,10 @@ class PtpClockSimTime:
         return self.get_ts_64()*1e-9
 
     async def _run(self):
+        clock_edge_event = RisingEdge(self.clock)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             self.ts_64_fns, self.ts_64_ns = math.modf(get_sim_time('ns'))
 
@@ -321,12 +325,12 @@ class PtpClockSimTime:
             self.ts_96_fns = self.ts_64_fns
 
             if self.ts_96 is not None:
-                self.ts_96 <= (self.ts_96_s << 48) | (self.ts_96_ns << 16) | self.ts_96_fns
+                self.ts_96.value = (self.ts_96_s << 48) | (self.ts_96_ns << 16) | self.ts_96_fns
 
             if self.ts_64 is not None:
-                self.ts_64 <= (self.ts_64_ns << 16) | self.ts_64_fns
+                self.ts_64.value = (self.ts_64_ns << 16) | self.ts_64_fns
 
             if self.pps is not None:
-                self.pps <= int(self.last_ts_96_s != self.ts_96_s)
+                self.pps.value = int(self.last_ts_96_s != self.ts_96_s)
 
             self.last_ts_96_s = self.ts_96_s

cocotbext/eth/reset.py

@@ -33,7 +33,7 @@ class Reset:
         self._reset_state = True
 
         if reset_signal is not None:
-            cocotb.fork(self._run_reset(reset_signal, bool(active_level)))
+            cocotb.start_soon(self._run_reset(reset_signal, bool(active_level)))
 
         self._update_reset()
 

cocotbext/eth/rgmii.py

@@ -61,6 +61,7 @@ class RgmiiSource(Reset):
         self.current_frame = None
         self.idle_event = Event()
         self.idle_event.set()
+        self.active_event = Event()
 
         self.ifg = 12
         self.mii_mode = False
@@ -90,6 +91,7 @@ class RgmiiSource(Reset):
         frame = GmiiFrame(frame)
         await self.queue.put(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -99,6 +101,7 @@ class RgmiiSource(Reset):
         frame = GmiiFrame(frame)
         self.queue.put_nowait(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -126,6 +129,7 @@ class RgmiiSource(Reset):
             frame.handle_tx_complete()
         self.dequeue_event.set()
         self.idle_event.set()
+        self.active_event.clear()
         self.queue_occupancy_bytes = 0
         self.queue_occupancy_frames = 0
 
@@ -140,8 +144,8 @@ class RgmiiSource(Reset):
                 self._run_cr = None
 
             self.active = False
-            self.data <= 0
+            self.data.value = 0
-            self.ctrl <= 0
+            self.ctrl.value = 0
 
             if self.current_frame:
                 self.log.warning("Flushed transmit frame during reset: %s", self.current_frame)
@@ -150,10 +154,11 @@ class RgmiiSource(Reset):
 
             if self.queue.empty():
                 self.idle_event.set()
+                self.active_event.clear()
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
@@ -161,22 +166,39 @@ class RgmiiSource(Reset):
         frame_data = None
         frame_error = None
         ifg_cnt = 0
+        in_ifg = False
         self.active = False
         d = 0
         er = 0
         en = 0
 
+        clock_rising_edge_event = RisingEdge(self.clock)
+        clock_falling_edge_event = FallingEdge(self.clock)
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_falling_edge_event
+
+            # send low nibble after falling edge, leading in to rising edge
+            self.data.value = d & 0x0F
+            self.ctrl.value = en
+
+            await clock_rising_edge_event
 
             # send high nibble after rising edge, leading in to falling edge
-            self.data <= d >> 4
+            self.data.value = d >> 4
-            self.ctrl <= en ^ er
+            self.ctrl.value = en ^ er
 
             if self.enable is None or self.enable.value:
+                in_ifg = False
+
                 if ifg_cnt > 0:
                     # in IFG
                     ifg_cnt -= 1
+                    in_ifg = True
 
                 elif frame is None and not self.queue.empty():
                     # send frame
@@ -221,6 +243,7 @@ class RgmiiSource(Reset):
 
                     if frame_offset >= len(frame_data):
                         ifg_cnt = max(self.ifg, 1)
+                        in_ifg = True
                         frame.sim_time_end = get_sim_time()
                         frame.handle_tx_complete()
                         frame = None
@@ -230,13 +253,14 @@ class RgmiiSource(Reset):
                     er = 0
                     en = 0
                     self.active = False
+
+                    if not in_ifg and self.queue.empty():
                         self.idle_event.set()
+                        self.active_event.clear()
+                        await self.active_event.wait()
 
-            await FallingEdge(self.clock)
+            elif self.enable is not None and not self.enable.value:
-
+                await enable_event
-            # send low nibble after falling edge, leading in to rising edge
-            self.data <= d & 0x0F
-            self.ctrl <= en
 
 
 class RgmiiSink(Reset):
@@ -330,7 +354,7 @@ class RgmiiSink(Reset):
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
@@ -339,21 +363,30 @@ class RgmiiSink(Reset):
         dv_val = 0
         er_val = 0
 
+        clock_rising_edge_event = RisingEdge(self.clock)
+        clock_falling_edge_event = FallingEdge(self.clock)
+
+        active_event = RisingEdge(self.ctrl)
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_rising_edge_event
+
+            if self.enable is None or self.enable.value:
 
                 # capture low nibble on rising edge
                 d_val = self.data.value.integer
                 dv_val = self.ctrl.value.integer
 
-            await FallingEdge(self.clock)
+                await clock_falling_edge_event
 
                 # capture high nibble on falling edge
                 d_val |= self.data.value.integer << 4
                 er_val = dv_val ^ self.ctrl.value.integer
 
-            if self.enable is None or self.enable.value:
-
                 if frame is None:
                     if dv_val:
                         # start of frame
@@ -406,6 +439,12 @@ class RgmiiSink(Reset):
                     frame.data.append(d_val)
                     frame.error.append(er_val)
 
+                if not dv_val:
+                    await active_event
+
+            elif self.enable is not None and not self.enable.value:
+                await enable_event
+
 
 class RgmiiPhy:
     def __init__(self, txd, tx_ctl, tx_clk, rxd, rx_ctl, rx_clk, reset=None,
@@ -434,11 +473,11 @@ class RgmiiPhy:
             self._clock_cr.kill()
 
         if self.speed == 1000e6:
-            self._clock_cr = cocotb.fork(self._run_clock(8*1e9/self.speed))
+            self._clock_cr = cocotb.start_soon(self._run_clock(8*1e9/self.speed))
             self.tx.mii_mode = False
             self.rx.mii_mode = False
         else:
-            self._clock_cr = cocotb.fork(self._run_clock(4*1e9/self.speed))
+            self._clock_cr = cocotb.start_soon(self._run_clock(4*1e9/self.speed))
             self.tx.mii_mode = True
             self.rx.mii_mode = True
 
@@ -448,6 +487,6 @@ class RgmiiPhy:
 
         while True:
             await t
-            self.rx_clk <= 1
+            self.rx_clk.value = 1
             await t
-            self.rx_clk <= 0
+            self.rx_clk.value = 0

cocotbext/eth/version.py

@@ -1 +1 @@
-__version__ = "0.1.14"
+__version__ = "0.1.20"

cocotbext/eth/xgmii.py

@@ -28,7 +28,7 @@ import zlib
 
 import cocotb
 from cocotb.queue import Queue, QueueFull
-from cocotb.triggers import RisingEdge, Timer, First, Event
+from cocotb.triggers import Edge, RisingEdge, Timer, First, Event
 from cocotb.utils import get_sim_time
 
 from .version import __version__
@@ -158,6 +158,7 @@ class XgmiiSource(Reset):
         self.current_frame = None
         self.idle_event = Event()
         self.idle_event.set()
+        self.active_event = Event()
 
         self.enable_dic = True
         self.ifg = 12
@@ -200,6 +201,7 @@ class XgmiiSource(Reset):
         frame = XgmiiFrame(frame)
         await self.queue.put(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -209,6 +211,7 @@ class XgmiiSource(Reset):
         frame = XgmiiFrame(frame)
         self.queue.put_nowait(frame)
         self.idle_event.clear()
+        self.active_event.set()
         self.queue_occupancy_bytes += len(frame)
         self.queue_occupancy_frames += 1
 
@@ -236,6 +239,7 @@ class XgmiiSource(Reset):
             frame.handle_tx_complete()
         self.dequeue_event.set()
         self.idle_event.set()
+        self.active_event.clear()
         self.queue_occupancy_bytes = 0
         self.queue_occupancy_frames = 0
 
@@ -250,8 +254,8 @@ class XgmiiSource(Reset):
                 self._run_cr = None
 
             self.active = False
-            self.data <= 0
+            self.data.value = 0
-            self.ctrl <= 0
+            self.ctrl.value = 0
 
             if self.current_frame:
                 self.log.warning("Flushed transmit frame during reset: %s", self.current_frame)
@@ -260,10 +264,11 @@ class XgmiiSource(Reset):
 
             if self.queue.empty():
                 self.idle_event.set()
+                self.active_event.clear()
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
@@ -272,8 +277,14 @@ class XgmiiSource(Reset):
         deficit_idle_cnt = 0
         self.active = False
 
+        clock_edge_event = RisingEdge(self.clock)
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             if self.enable is None or self.enable.value:
                 if ifg_cnt + deficit_idle_cnt > self.byte_lanes-1 or (not self.enable_dic and ifg_cnt > 4):
@@ -351,13 +362,20 @@ class XgmiiSource(Reset):
                             d_val |= XgmiiCtrl.IDLE << k*8
                             c_val |= 1 << k
 
-                    self.data <= d_val
+                    self.data.value = d_val
-                    self.ctrl <= c_val
+                    self.ctrl.value = c_val
                 else:
-                    self.data <= self.idle_d
+                    self.data.value = self.idle_d
-                    self.ctrl <= self.idle_c
+                    self.ctrl.value = self.idle_c
                     self.active = False
+
+                    if ifg_cnt == 0 and self.queue.empty():
                         self.idle_event.set()
+                        self.active_event.clear()
+                        await self.active_event.wait()
+
+            elif self.enable is not None and not self.enable.value:
+                await enable_event
 
 
 class XgmiiSink(Reset):
@@ -450,19 +468,32 @@ class XgmiiSink(Reset):
         else:
             self.log.info("Reset de-asserted")
             if self._run_cr is None:
-                self._run_cr = cocotb.fork(self._run())
+                self._run_cr = cocotb.start_soon(self._run())
 
     async def _run(self):
         frame = None
         self.active = False
 
+        clock_edge_event = RisingEdge(self.clock)
+
+        active_event = First(Edge(self.data), Edge(self.ctrl))
+
+        enable_event = None
+        if self.enable is not None:
+            enable_event = RisingEdge(self.enable)
+
+        idle_d = sum([XgmiiCtrl.IDLE << n*8 for n in range(self.byte_lanes)])
+        idle_c = 2**self.byte_lanes-1
+
         while True:
-            await RisingEdge(self.clock)
+            await clock_edge_event
 
             if self.enable is None or self.enable.value:
+                data_val = self.data.value.integer
+                ctrl_val = self.ctrl.value.integer
                 for offset in range(self.byte_lanes):
-                    d_val = (self.data.value.integer >> (offset*8)) & 0xff
+                    d_val = (data_val >> (offset*8)) & 0xff
-                    c_val = (self.ctrl.value.integer >> offset) & 1
+                    c_val = (ctrl_val >> offset) & 1
 
                     if frame is None:
                         if c_val and d_val == XgmiiCtrl.START:
@@ -495,3 +526,9 @@ class XgmiiSink(Reset):
 
                             frame.data.append(d_val)
                             frame.ctrl.append(c_val)
+
+                if data_val == idle_d and ctrl_val == idle_c:
+                    await active_event
+
+            elif self.enable is not None and not self.enable.value:
+                await enable_event

setup.cfg

@@ -17,17 +17,18 @@ long-description-content-type = text/markdown
 platforms = any
 classifiers =
     Development Status :: 3 - Alpha
-    Programming Language :: Python :: 3
+    Framework :: cocotb
     License :: OSI Approved :: MIT License
     Operating System :: OS Independent
+    Programming Language :: Python :: 3
     Topic :: Scientific/Engineering :: Electronic Design Automation (EDA)
 
 [options]
 packages = find_namespace:
 python_requires = >=3.6
 install_requires =
-    cocotb
+    cocotb >= 1.6.0
-    cocotbext-axi
+    cocotbext-axi >= 0.1.16
 
 [options.extras_require]
 test =
@@ -46,31 +47,39 @@ addopts =
 
 # tox configuration
 [tox:tox]
-envlist = py36, py37, py38, py39
+envlist = py37, py38, py39, py310
+skip_missing_interpreters = true
+minversion = 3.18.0
+requires = virtualenv >= 16.1
 
 [gh-actions]
 python =
-    3.6: py36
     3.7: py37
     3.8: py38
     3.9: py39
+    3.10: py310
 
 [testenv]
 setenv =
     COVERAGE=1
+usedevelop = True
 
 deps =
-    pytest
+    pytest == 7.2.1
-    pytest-xdist
+    pytest-xdist == 3.1.0
-    cocotb-test
+    cocotb == 1.7.2
-    coverage
+    cocotb-bus == 0.2.1
-    pytest-cov
+    cocotb-test == 0.2.4
+    cocotbext-axi == 0.1.20
+    coverage == 7.0.5
+    pytest-cov == 4.0.0
 
 commands =
-    pytest --cov=cocotbext --cov=tests --cov-branch -n auto
+    pytest --cov=cocotbext --cov=tests --cov-branch {posargs:-n auto --verbose}
     bash -c 'find . -type f -name "\.coverage" | xargs coverage combine --append'
+    coverage report
 
-whitelist_externals =
+allowlist_externals =
     bash
 
 # combine if paths are different

tests/eth_mac/test_eth_mac.py

@@ -45,8 +45,8 @@ class TB:
         self.log = logging.getLogger("cocotb.tb")
         self.log.setLevel(logging.DEBUG)
 
-        cocotb.fork(Clock(dut.tx_clk, 6.4, units="ns").start())
+        cocotb.start_soon(Clock(dut.tx_clk, 6.4, units="ns").start())
-        cocotb.fork(Clock(dut.rx_clk, 6.4, units="ns").start())
+        cocotb.start_soon(Clock(dut.rx_clk, 6.4, units="ns").start())
 
         self.mac = EthMac(
             tx_clk=dut.tx_clk,
@@ -54,6 +54,7 @@ class TB:
             tx_bus=AxiStreamBus.from_prefix(dut, "tx_axis"),
             tx_ptp_time=dut.tx_ptp_time,
             tx_ptp_ts=dut.tx_ptp_ts,
+            tx_ptp_ts_tag=dut.tx_ptp_ts_tag,
             tx_ptp_ts_valid=dut.tx_ptp_ts_valid,
             rx_clk=dut.rx_clk,
             rx_rst=dut.rx_rst,
@@ -80,12 +81,12 @@ class TB:
         self.dut.rx_rst.setimmediatevalue(0)
         await RisingEdge(self.dut.tx_clk)
         await RisingEdge(self.dut.tx_clk)
-        self.dut.tx_rst <= 1
+        self.dut.tx_rst.value = 1
-        self.dut.rx_rst <= 1
+        self.dut.rx_rst.value = 1
         await RisingEdge(self.dut.tx_clk)
         await RisingEdge(self.dut.tx_clk)
-        self.dut.tx_rst <= 0
+        self.dut.tx_rst.value = 0
-        self.dut.rx_rst <= 0
+        self.dut.rx_rst.value = 0
         await RisingEdge(self.dut.tx_clk)
         await RisingEdge(self.dut.tx_clk)
 

tests/eth_mac/test_eth_mac.v

@@ -36,11 +36,12 @@ module test_eth_mac
     inout  wire [63:0] tx_axis_tdata,
     inout  wire [7:0]  tx_axis_tkeep,
     inout  wire        tx_axis_tlast,
-    inout  wire        tx_axis_tuser,
+    inout  wire [16:0] tx_axis_tuser,
     inout  wire        tx_axis_tvalid,
     inout  wire        tx_axis_tready,
     inout  wire [95:0] tx_ptp_time,
     inout  wire [95:0] tx_ptp_ts,
+    inout  wire [15:0] tx_ptp_ts_tag,
     inout  wire        tx_ptp_ts_valid,
 
     inout  wire        rx_clk,

tests/gmii/test_gmii.py

@@ -47,7 +47,7 @@ class TB:
         self._enable_generator = None
         self._enable_cr = None
 
-        cocotb.fork(Clock(dut.clk, 2, units="ns").start())
+        cocotb.start_soon(Clock(dut.clk, 2, units="ns").start())
 
         self.source = GmiiSource(dut.gmii_d, dut.gmii_er, dut.gmii_en,
             dut.clk, dut.rst, dut.gmii_clk_en, dut.gmii_mii_sel)
@@ -61,10 +61,10 @@ class TB:
         self.dut.rst.setimmediatevalue(0)
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 1
+        self.dut.rst.value = 1
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 0
+        self.dut.rst.value = 0
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
 
@@ -76,15 +76,17 @@ class TB:
         self._enable_generator = generator
 
         if self._enable_generator is not None:
-            self._enable_cr = cocotb.fork(self._run_enable())
+            self._enable_cr = cocotb.start_soon(self._run_enable())
 
     def clear_enable_generator(self):
         self.set_enable_generator(None)
 
     async def _run_enable(self):
+        clock_edge_event = RisingEdge(self.dut.clk)
+
         for val in self._enable_generator:
-            self.dut.gmii_clk_en <= val
+            self.dut.gmii_clk_en.value = val
-            await RisingEdge(self.dut.clk)
+            await clock_edge_event
 
 
 async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_gen=None, mii_sel=False):
@@ -92,7 +94,7 @@ async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_
     tb = TB(dut)
 
     tb.source.ifg = ifg
-    tb.dut.gmii_mii_sel <= mii_sel
+    tb.dut.gmii_mii_sel.value = mii_sel
 
     if enable_gen is not None:
         tb.set_enable_generator(enable_gen())

tests/gmii_phy/test_gmii_phy.py

@@ -44,7 +44,7 @@ class TB:
         self.log = logging.getLogger("cocotb.tb")
         self.log.setLevel(logging.DEBUG)
 
-        cocotb.fork(Clock(dut.phy_gtx_clk, 8, units="ns").start())
+        cocotb.start_soon(Clock(dut.phy_gtx_clk, 8, units="ns").start())
 
         self.gmii_phy = GmiiPhy(dut.phy_txd, dut.phy_tx_er, dut.phy_tx_en, dut.phy_tx_clk, dut.phy_gtx_clk,
             dut.phy_rxd, dut.phy_rx_er, dut.phy_rx_dv, dut.phy_rx_clk, dut.phy_rst, speed=speed)
@@ -64,10 +64,10 @@ class TB:
         self.dut.phy_rst.setimmediatevalue(0)
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
-        self.dut.phy_rst <= 1
+        self.dut.phy_rst.value = 1
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
-        self.dut.phy_rst <= 0
+        self.dut.phy_rst.value = 0
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
 

tests/mii/test_mii.py

@@ -47,7 +47,7 @@ class TB:
         self._enable_generator = None
         self._enable_cr = None
 
-        cocotb.fork(Clock(dut.clk, 2, units="ns").start())
+        cocotb.start_soon(Clock(dut.clk, 2, units="ns").start())
 
         self.source = MiiSource(dut.mii_d, dut.mii_er, dut.mii_en,
             dut.clk, dut.rst, dut.mii_clk_en)
@@ -60,10 +60,10 @@ class TB:
         self.dut.rst.setimmediatevalue(0)
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 1
+        self.dut.rst.value = 1
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 0
+        self.dut.rst.value = 0
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
 
@@ -75,15 +75,17 @@ class TB:
         self._enable_generator = generator
 
         if self._enable_generator is not None:
-            self._enable_cr = cocotb.fork(self._run_enable())
+            self._enable_cr = cocotb.start_soon(self._run_enable())
 
     def clear_enable_generator(self):
         self.set_enable_generator(None)
 
     async def _run_enable(self):
+        clock_edge_event = RisingEdge(self.dut.clk)
+
         for val in self._enable_generator:
-            self.dut.mii_clk_en <= val
+            self.dut.mii_clk_en.value = val
-            await RisingEdge(self.dut.clk)
+            await clock_edge_event
 
 
 async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_gen=None):

tests/mii_phy/test_mii_phy.py

@@ -55,10 +55,10 @@ class TB:
         self.dut.phy_rst.setimmediatevalue(0)
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
-        self.dut.phy_rst <= 1
+        self.dut.phy_rst.value = 1
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
-        self.dut.phy_rst <= 0
+        self.dut.phy_rst.value = 0
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
 

tests/ptp_clock/test_ptp_clock.py

@@ -30,7 +30,7 @@ import cocotb_test.simulator
 
 import cocotb
 from cocotb.clock import Clock
-from cocotb.triggers import RisingEdge
+from cocotb.triggers import RisingEdge, ClockCycles
 from cocotb.utils import get_sim_time
 
 from cocotbext.eth import PtpClock
@@ -43,7 +43,7 @@ class TB:
         self.log = logging.getLogger("cocotb.tb")
         self.log.setLevel(logging.DEBUG)
 
-        cocotb.fork(Clock(dut.clk, 6.4, units="ns").start())
+        cocotb.start_soon(Clock(dut.clk, 6.4, units="ns").start())
 
         self.ptp_clock = PtpClock(
             ts_96=dut.ts_96,
@@ -59,10 +59,10 @@ class TB:
         self.dut.rst.setimmediatevalue(0)
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 1
+        self.dut.rst.value = 1
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 0
+        self.dut.rst.value = 0
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
 
@@ -79,8 +79,7 @@ async def run_default_rate(dut):
     start_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
     start_ts_64 = dut.ts_64.value.integer/2**16*1e-9
 
-    for k in range(10000):
+    await ClockCycles(dut.clk, 10000)
-        await RisingEdge(dut.clk)
 
     stop_time = get_sim_time('sec')
     stop_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
@@ -126,8 +125,7 @@ async def run_load_timestamps(dut):
     start_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
     start_ts_64 = dut.ts_64.value.integer/2**16*1e-9
 
-    for k in range(2000):
+    await ClockCycles(dut.clk, 2000)
-        await RisingEdge(dut.clk)
 
     stop_time = get_sim_time('sec')
     stop_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
@@ -221,8 +219,7 @@ async def run_frequency_adjustment(dut):
     start_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
     start_ts_64 = dut.ts_64.value.integer/2**16*1e-9
 
-    for k in range(10000):
+    await ClockCycles(dut.clk, 10000)
-        await RisingEdge(dut.clk)
 
     stop_time = get_sim_time('sec')
     stop_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
@@ -264,8 +261,7 @@ async def run_drift_adjustment(dut):
     start_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
     start_ts_64 = dut.ts_64.value.integer/2**16*1e-9
 
-    for k in range(10000):
+    await ClockCycles(dut.clk, 10000)
-        await RisingEdge(dut.clk)
 
     stop_time = get_sim_time('sec')
     stop_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)

tests/ptp_clock_sim_time/test_ptp_clock_sim_time.py

@@ -30,7 +30,7 @@ import cocotb_test.simulator
 
 import cocotb
 from cocotb.clock import Clock
-from cocotb.triggers import RisingEdge
+from cocotb.triggers import RisingEdge, ClockCycles
 from cocotb.utils import get_sim_time
 
 from cocotbext.eth import PtpClockSimTime
@@ -43,7 +43,7 @@ class TB:
         self.log = logging.getLogger("cocotb.tb")
         self.log.setLevel(logging.DEBUG)
 
-        cocotb.fork(Clock(dut.clk, 6.4, units="ns").start())
+        cocotb.start_soon(Clock(dut.clk, 6.4, units="ns").start())
 
         self.ptp_clock = PtpClockSimTime(
             ts_96=dut.ts_96,
@@ -66,8 +66,7 @@ async def run_test(dut):
     start_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)
     start_ts_64 = dut.ts_64.value.integer/2**16*1e-9
 
-    for k in range(10000):
+    await ClockCycles(dut.clk, 10000)
-        await RisingEdge(dut.clk)
 
     stop_time = get_sim_time('sec')
     stop_ts_96 = (dut.ts_96.value.integer >> 48) + ((dut.ts_96.value.integer & 0xffffffffffff)/2**16*1e-9)

tests/rgmii/test_rgmii.py

@@ -47,7 +47,7 @@ class TB:
         self._enable_generator = None
         self._enable_cr = None
 
-        cocotb.fork(Clock(dut.clk, 2, units="ns").start())
+        cocotb.start_soon(Clock(dut.clk, 2, units="ns").start())
 
         self.source = RgmiiSource(dut.rgmii_d, dut.rgmii_ctl, dut.clk, dut.rst, dut.rgmii_clk_en, dut.rgmii_mii_sel)
         self.sink = RgmiiSink(dut.rgmii_d, dut.rgmii_ctl, dut.clk, dut.rst, dut.rgmii_clk_en, dut.rgmii_mii_sel)
@@ -59,10 +59,10 @@ class TB:
         self.dut.rst.setimmediatevalue(0)
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 1
+        self.dut.rst.value = 1
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 0
+        self.dut.rst.value = 0
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
 
@@ -74,15 +74,17 @@ class TB:
         self._enable_generator = generator
 
         if self._enable_generator is not None:
-            self._enable_cr = cocotb.fork(self._run_enable())
+            self._enable_cr = cocotb.start_soon(self._run_enable())
 
     def clear_enable_generator(self):
         self.set_enable_generator(None)
 
     async def _run_enable(self):
+        clock_edge_event = RisingEdge(self.dut.clk)
+
         for val in self._enable_generator:
-            self.dut.rgmii_clk_en <= val
+            self.dut.rgmii_clk_en.value = val
-            await RisingEdge(self.dut.clk)
+            await clock_edge_event
 
 
 async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_gen=None, mii_sel=False):
@@ -90,7 +92,7 @@ async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_
     tb = TB(dut)
 
     tb.source.ifg = ifg
-    tb.dut.rgmii_mii_sel <= mii_sel
+    tb.dut.rgmii_mii_sel.value = mii_sel
 
     if enable_gen is not None:
         tb.set_enable_generator(enable_gen())

tests/rgmii_phy/test_rgmii_phy.py

@@ -45,11 +45,11 @@ class TB:
         self.log.setLevel(logging.DEBUG)
 
         if speed == 1000e6:
-            cocotb.fork(Clock(dut.phy_tx_clk, 8, units="ns").start())
+            cocotb.start_soon(Clock(dut.phy_tx_clk, 8, units="ns").start())
         elif speed == 100e6:
-            cocotb.fork(Clock(dut.phy_tx_clk, 40, units="ns").start())
+            cocotb.start_soon(Clock(dut.phy_tx_clk, 40, units="ns").start())
         elif speed == 10e6:
-            cocotb.fork(Clock(dut.phy_tx_clk, 400, units="ns").start())
+            cocotb.start_soon(Clock(dut.phy_tx_clk, 400, units="ns").start())
 
         self.rgmii_phy = RgmiiPhy(dut.phy_txd, dut.phy_tx_ctl, dut.phy_tx_clk,
             dut.phy_rxd, dut.phy_rx_ctl, dut.phy_rx_clk, dut.phy_rst, speed=speed)
@@ -68,10 +68,10 @@ class TB:
         self.dut.phy_rst.setimmediatevalue(0)
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
-        self.dut.phy_rst <= 1
+        self.dut.phy_rst.value = 1
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
-        self.dut.phy_rst <= 0
+        self.dut.phy_rst.value = 0
         await RisingEdge(self.dut.phy_tx_clk)
         await RisingEdge(self.dut.phy_tx_clk)
 

tests/xgmii/test_xgmii.py

@@ -48,7 +48,7 @@ class TB:
         self._enable_generator = None
         self._enable_cr = None
 
-        cocotb.fork(Clock(dut.clk, 2, units="ns").start())
+        cocotb.start_soon(Clock(dut.clk, 2, units="ns").start())
 
         self.source = XgmiiSource(dut.xgmii_d, dut.xgmii_c, dut.clk, dut.rst, dut.xgmii_clk_en)
         self.sink = XgmiiSink(dut.xgmii_d, dut.xgmii_c, dut.clk, dut.rst, dut.xgmii_clk_en)
@@ -59,10 +59,10 @@ class TB:
         self.dut.rst.setimmediatevalue(0)
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 1
+        self.dut.rst.value = 1
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
-        self.dut.rst <= 0
+        self.dut.rst.value = 0
         await RisingEdge(self.dut.clk)
         await RisingEdge(self.dut.clk)
 
@@ -74,15 +74,17 @@ class TB:
         self._enable_generator = generator
 
         if self._enable_generator is not None:
-            self._enable_cr = cocotb.fork(self._run_enable())
+            self._enable_cr = cocotb.start_soon(self._run_enable())
 
     def clear_enable_generator(self):
         self.set_enable_generator(None)
 
     async def _run_enable(self):
+        clock_edge_event = RisingEdge(self.dut.clk)
+
         for val in self._enable_generator:
-            self.dut.xgmii_clk_en <= val
+            self.dut.xgmii_clk_en.value = val
-            await RisingEdge(self.dut.clk)
+            await clock_edge_event
 
 
 async def run_test(dut, payload_lengths=None, payload_data=None, ifg=12, enable_dic=True,