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Rework resets

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This commit is contained in:
Alex Forencich
2020-12-24 19:08:41 -08:00
parent a3df4ed1f9
commit 5eeffc0c68
7 changed files with 249 additions and 109 deletions
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62
cocotbext/eth/gmii.py
View File

@@ -33,6 +33,7 @@ from cocotb.utils import get_sim_time
from .version import __version__
from .constants import EthPre, ETH_PREAMBLE
from .reset import Reset
class GmiiFrame:
@@ -114,7 +115,7 @@ class GmiiFrame:
return bytes(self.data)
class GmiiSource:
class GmiiSource(Reset):
def __init__(self, data, er, dv, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -145,8 +146,6 @@ class GmiiSource:
self.width = 8
self.byte_width = 1
self.reset = reset
assert len(self.data) == 8
self.data.setimmediatevalue(0)
if self.er is not None:
@@ -155,7 +154,9 @@ class GmiiSource:
assert len(self.dv) == 1
self.dv.setimmediatevalue(0)
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def send(self, frame):
self.send_nowait(frame)
@@ -179,6 +180,23 @@ class GmiiSource:
while not self.idle():
await RisingEdge(self.clock)
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
self.data <= 0
if self.er is not None:
self.er <= 0
self.dv <= 0
async def _run(self):
frame = None
ifg_cnt = 0
@@ -187,16 +205,6 @@ class GmiiSource:
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
ifg_cnt = 0
self.active = False
self.data <= 0
if self.er is not None:
self.er <= 0
self.dv <= 0
continue
if self.enable is None or self.enable.value:
if ifg_cnt > 0:
# in IFG
@@ -243,7 +251,7 @@ class GmiiSource:
self.active = False
class GmiiSink:
class GmiiSink(Reset):
def __init__(self, data, er, dv, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -274,15 +282,15 @@ class GmiiSink:
self.width = 8
self.byte_width = 1
self.reset = reset
assert len(self.data) == 8
if self.er is not None:
assert len(self.er) == 1
if self.dv is not None:
assert len(self.dv) == 1
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def recv(self, compact=True):
while self.empty():
@@ -316,6 +324,19 @@ class GmiiSink:
else:
await self.sync.wait()
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
async def _run(self):
frame = None
self.active = False
@@ -323,11 +344,6 @@ class GmiiSink:
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
self.active = False
continue
if self.enable is None or self.enable.value:
d_val = self.data.value.integer
dv_val = self.dv.value.integer

62
cocotbext/eth/mii.py
View File

@@ -32,9 +32,10 @@ from cocotb.utils import get_sim_time, get_sim_steps
from .version import __version__
from .gmii import GmiiFrame
from .constants import EthPre
from .reset import Reset
class MiiSource:
class MiiSource(Reset):
def __init__(self, data, er, dv, clock, reset=None, enable=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -63,8 +64,6 @@ class MiiSource:
self.width = 4
self.byte_width = 1
self.reset = reset
assert len(self.data) == 4
self.data.setimmediatevalue(0)
if self.er is not None:
@@ -73,7 +72,9 @@ class MiiSource:
assert len(self.dv) == 1
self.dv.setimmediatevalue(0)
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def send(self, frame):
self.send_nowait(frame)
@@ -97,6 +98,23 @@ class MiiSource:
while not self.idle():
await RisingEdge(self.clock)
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
self.data <= 0
if self.er is not None:
self.er <= 0
self.dv <= 0
async def _run(self):
frame = None
ifg_cnt = 0
@@ -105,16 +123,6 @@ class MiiSource:
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
ifg_cnt = 0
self.active = False
self.data <= 0
if self.er is not None:
self.er <= 0
self.dv <= 0
continue
if self.enable is None or self.enable.value:
if ifg_cnt > 0:
# in IFG
@@ -157,7 +165,7 @@ class MiiSource:
self.active = False
class MiiSink:
class MiiSink(Reset):
def __init__(self, data, er, dv, clock, reset=None, enable=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -185,15 +193,15 @@ class MiiSink:
self.width = 4
self.byte_width = 1
self.reset = reset
assert len(self.data) == 4
if self.er is not None:
assert len(self.er) == 1
if self.dv is not None:
assert len(self.dv) == 1
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def recv(self, compact=True):
while self.empty():
@@ -227,6 +235,19 @@ class MiiSink:
else:
await self.sync.wait()
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
async def _run(self):
frame = None
self.active = False
@@ -234,11 +255,6 @@ class MiiSink:
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
self.active = False
continue
if self.enable is None or self.enable.value:
d_val = self.data.value.integer
dv_val = self.dv.value.integer

50
cocotbext/eth/ptp.py
View File

@@ -30,9 +30,10 @@ import cocotb
from cocotb.triggers import RisingEdge
from .version import __version__
from .reset import Reset
class PtpClock:
class PtpClock(Reset):
def __init__(
self,
@@ -87,7 +88,9 @@ class PtpClock:
if self.pps is not None:
self.pps.setimmediatevalue(0)
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
def set_period(self, ns, fns):
self.period_ns = int(ns)
@@ -176,27 +179,36 @@ class PtpClock:
def get_ts_64_s(self):
return self.get_ts_64()*1e-9
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.ts_96_s = 0
self.ts_96_ns = 0
self.ts_96_fns = 0
self.ts_64_ns = 0
self.ts_64_fns = 0
self.drift_cnt = 0
if self.ts_96 is not None:
self.ts_96 <= 0
if self.ts_64 is not None:
self.ts_64 <= 0
if self.ts_step is not None:
self.ts_step <= 0
if self.pps is not None:
self.pps <= 0
async def _run(self):
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
self.ts_96_s = 0
self.ts_96_ns = 0
self.ts_96_fns = 0
self.ts_64_ns = 0
self.ts_64_fns = 0
self.drift_cnt = 0
if self.ts_96 is not None:
self.ts_96 <= 0
if self.ts_64 is not None:
self.ts_64 <= 0
if self.ts_step is not None:
self.ts_step <= 0
if self.pps is not None:
self.pps <= 0
continue
if self.ts_step is not None:
self.ts_step <= self.ts_updated
self.ts_updated = False

66
cocotbext/eth/reset.py Normal file
View File

@@ -0,0 +1,66 @@
"""
Copyright (c) 2020 Alex Forencich
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""
import cocotb
from cocotb.triggers import RisingEdge, FallingEdge
class Reset:
def _init_reset(self, reset_signal=None, active_high=True):
self._local_reset = False
self._ext_reset = False
self._reset_state = True
if reset_signal is not None:
cocotb.fork(self._run_reset(reset_signal, active_high))
self._update_reset()
def assert_reset(self, val=None):
if val is None:
self.assert_reset(True)
self.assert_reset(False)
else:
self._local_reset = val
self._update_reset()
def _update_reset(self):
new_state = self._local_reset or self._ext_reset
if self._reset_state != new_state:
self._reset_state = new_state
self._handle_reset(new_state)
def _handle_reset(self, state):
pass
async def _run_reset(self, reset_signal, active_high):
while True:
if bool(reset_signal.value):
await FallingEdge(reset_signal)
self._ext_reset = not active_high
self._update_reset()
else:
await RisingEdge(reset_signal)
self._ext_reset = active_high
self._update_reset()

58
cocotbext/eth/rgmii.py
View File

@@ -32,9 +32,10 @@ from cocotb.utils import get_sim_time, get_sim_steps
from .version import __version__
from .gmii import GmiiFrame
from .constants import EthPre
from .reset import Reset
class RgmiiSource:
class RgmiiSource(Reset):
def __init__(self, data, ctrl, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -64,14 +65,14 @@ class RgmiiSource:
self.width = 8
self.byte_width = 1
self.reset = reset
assert len(self.data) == 4
self.data.setimmediatevalue(0)
assert len(self.ctrl) == 1
self.ctrl.setimmediatevalue(0)
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def send(self, frame):
self.send_nowait(frame)
@@ -95,6 +96,21 @@ class RgmiiSource:
while not self.idle():
await RisingEdge(self.clock)
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
self.data <= 0
self.ctrl <= 0
async def _run(self):
frame = None
ifg_cnt = 0
@@ -106,14 +122,6 @@ class RgmiiSource:
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
ifg_cnt = 0
self.active = False
self.data <= 0
self.ctrl <= 0
continue
if not self.mii_mode:
# send high nibble after rising edge, leading in to falling edge
self.data <= d >> 4
@@ -169,7 +177,7 @@ class RgmiiSource:
self.ctrl <= en
class RgmiiSink:
class RgmiiSink(Reset):
def __init__(self, data, ctrl, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -199,12 +207,12 @@ class RgmiiSink:
self.width = 8
self.byte_width = 1
self.reset = reset
assert len(self.data) == 4
assert len(self.ctrl) == 1
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def recv(self, compact=True):
while self.empty():
@@ -238,6 +246,19 @@ class RgmiiSink:
else:
await self.sync.wait()
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
async def _run(self):
frame = None
self.active = False
@@ -254,11 +275,6 @@ class RgmiiSink:
await FallingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
self.active = False
continue
# capture high nibble on falling edge
d_val |= self.data.value.integer << 4
er_val = dv_val ^ self.ctrl.value.integer

59
cocotbext/eth/xgmii.py
View File

@@ -33,6 +33,7 @@ from cocotb.utils import get_sim_time
from .version import __version__
from .constants import EthPre, ETH_PREAMBLE, XgmiiCtrl
from .reset import Reset
class XgmiiFrame:
@@ -117,7 +118,7 @@ class XgmiiFrame:
return bytes(self.data)
class XgmiiSource:
class XgmiiSource(Reset):
def __init__(self, data, ctrl, clock, reset=None, enable=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -147,8 +148,6 @@ class XgmiiSource:
self.width = len(self.data)
self.byte_width = len(self.ctrl)
self.reset = reset
assert self.width == self.byte_width * 8
self.idle_d = 0
@@ -161,7 +160,9 @@ class XgmiiSource:
self.data.setimmediatevalue(0)
self.ctrl.setimmediatevalue(0)
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def send(self, frame):
self.send_nowait(frame)
@@ -185,6 +186,21 @@ class XgmiiSource:
while not self.idle():
await RisingEdge(self.clock)
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
self.data <= 0
self.ctrl <= 0
async def _run(self):
frame = None
ifg_cnt = 0
@@ -194,15 +210,6 @@ class XgmiiSource:
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
ifg_cnt = 0
deficit_idle_cnt = 0
self.active = False
self.data <= 0
self.ctrl <= 0
continue
if self.enable is None or self.enable.value:
if ifg_cnt + deficit_idle_cnt > self.byte_width-1 or (not self.enable_dic and ifg_cnt > 4):
# in IFG
@@ -272,7 +279,7 @@ class XgmiiSource:
self.active = False
class XgmiiSink:
class XgmiiSink(Reset):
def __init__(self, data, ctrl, clock, reset=None, enable=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
@@ -299,11 +306,11 @@ class XgmiiSink:
self.width = len(self.data)
self.byte_width = len(self.ctrl)
self.reset = reset
assert self.width == self.byte_width * 8
cocotb.fork(self._run())
self._run_cr = None
self._init_reset(reset)
async def recv(self, compact=True):
while self.empty():
@@ -337,6 +344,19 @@ class XgmiiSink:
else:
await self.sync.wait()
def _handle_reset(self, state):
if state:
self.log.info("Reset asserted")
if self._run_cr is not None:
self._run_cr.kill()
self._run_cr = None
else:
self.log.info("Reset de-asserted")
if self._run_cr is None:
self._run_cr = cocotb.fork(self._run())
self.active = False
async def _run(self):
frame = None
self.active = False
@@ -344,11 +364,6 @@ class XgmiiSink:
while True:
await RisingEdge(self.clock)
if self.reset is not None and self.reset.value:
frame = None
self.active = False
continue
if self.enable is None or self.enable.value:
for offset in range(self.byte_width):
d_val = (self.data.value.integer >> (offset*8)) & 0xff