bslathi19/cocotbext-eth
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Skip using bus for more convenient support of non-standard signal names

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Alex Forencich
2020-11-25 17:34:19 -08:00
parent ceabdabb11
commit c4ed6073d6
6 changed files with 103 additions and 131 deletions
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61
cocotbext/eth/rgmii.py
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@@ -22,14 +22,13 @@ THE SOFTWARE.
"""
import logging
from collections import deque
import cocotb
from cocotb.triggers import RisingEdge, FallingEdge, ReadOnly, Timer, First, Event
from cocotb.bus import Bus
from cocotb.log import SimLog
from cocotb.utils import get_sim_time
from collections import deque
from .version import __version__
from .gmii import GmiiFrame
from .constants import EthPre
@@ -37,17 +36,14 @@ from .constants import EthPre
class RgmiiSource(object):
_signals = ["d", "ctl"]
_optional_signals = []
def __init__(self, entity, name, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = SimLog("cocotb.%s.%s" % (entity._name, name))
self.entity = entity
def __init__(self, data, ctrl, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
self.data = data
self.ctrl = ctrl
self.clock = clock
self.reset = reset
self.enable = enable
self.mii_select = mii_select
self.bus = Bus(self.entity, name, self._signals, optional_signals=self._optional_signals, **kwargs)
self.log.info("RGMII source")
self.log.info("cocotbext-eth version %s", __version__)
@@ -69,10 +65,10 @@ class RgmiiSource(object):
self.reset = reset
assert len(self.bus.d) == 4
self.bus.d.setimmediatevalue(0)
assert len(self.bus.ctl) == 1
self.bus.ctl.setimmediatevalue(0)
assert len(self.data) == 4
self.data.setimmediatevalue(0)
assert len(self.ctrl) == 1
self.ctrl.setimmediatevalue(0)
cocotb.fork(self._run())
@@ -111,16 +107,16 @@ class RgmiiSource(object):
frame = None
ifg_cnt = 0
self.active = False
self.bus.d <= 0
self.bus.ctl <= 0
self.data <= 0
self.ctrl <= 0
continue
await RisingEdge(self.clock)
if self.mii_select is None or not self.mii_select.value:
# send high nibble after rising edge, leading in to falling edge
self.bus.d <= d >> 4
self.bus.ctl <= en ^ er
self.data <= d >> 4
self.ctrl <= en ^ er
if self.enable is None or self.enable.value:
if ifg_cnt > 0:
@@ -165,23 +161,20 @@ class RgmiiSource(object):
await FallingEdge(self.clock)
# send low nibble after falling edge, leading in to rising edge
self.bus.d <= d & 0x0F
self.bus.ctl <= en
self.data <= d & 0x0F
self.ctrl <= en
class RgmiiSink(object):
_signals = ["d", "ctl"]
_optional_signals = []
def __init__(self, entity, name, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = SimLog("cocotb.%s.%s" % (entity._name, name))
self.entity = entity
def __init__(self, data, ctrl, clock, reset=None, enable=None, mii_select=None, *args, **kwargs):
self.log = logging.getLogger(f"cocotb.{data._path}")
self.data = data
self.ctrl = ctrl
self.clock = clock
self.reset = reset
self.enable = enable
self.mii_select = mii_select
self.bus = Bus(self.entity, name, self._signals, optional_signals=self._optional_signals, **kwargs)
self.log.info("RGMII sink")
self.log.info("cocotbext-eth version %s", __version__)
@@ -202,8 +195,8 @@ class RgmiiSink(object):
self.reset = reset
assert len(self.bus.d) == 4
assert len(self.bus.ctl) == 1
assert len(self.data) == 4
assert len(self.ctrl) == 1
cocotb.fork(self._run())
@@ -250,8 +243,8 @@ class RgmiiSink(object):
continue
# capture high nibble after rising edge, leading in to falling edge
d_val |= self.bus.d.value.integer << 4
er_val = dv_val ^ self.bus.ctl.value.integer
d_val |= self.data.value.integer << 4
er_val = dv_val ^ self.ctrl.value.integer
if self.enable is None or self.enable.value:
@@ -304,8 +297,8 @@ class RgmiiSink(object):
await ReadOnly()
# capture low nibble after falling edge, leading in to rising edge
d_val = self.bus.d.value.integer
dv_val = self.bus.ctl.value.integer
d_val = self.data.value.integer
dv_val = self.ctrl.value.integer
await RisingEdge(self.clock)