bslathi19/PeakRDL-regblock
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Add counter support

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This commit is contained in:
Alex Mykyta
2021-12-11 20:41:49 -08:00
parent f5b12253ad
commit 9eddc9b60f
40 changed files with 1133 additions and 349 deletions
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62
peakrdl/regblock/dereferencer.py
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@@ -60,8 +60,12 @@ class Dereferencer:
return self.get_value(reset_value)
else:
# No reset value defined!
# Callers shall ensure this is impossible
raise RuntimeError
obj.env.msg.warning(
"Field '%s' is a constant but does not have a known value (missing reset). Assigning it a value of X."
% obj.inst_name,
obj.inst.inst_src_ref
)
return "'X"
if isinstance(obj, SignalNode):
# Signals are always inputs from the hwif
@@ -106,28 +110,12 @@ class Dereferencer:
}:
return self.get_value(field.get_property(prop_name))
# Counter properties
if prop_name == 'incr':
prop_value = field.get_property(prop_name)
if prop_value is None:
# unset by the user, points to the implied internal signal
return self.field_logic.get_counter_incr_identifier(field)
else:
return self.get_value(prop_value)
elif prop_name == 'decr':
prop_value = field.get_property(prop_name)
if prop_value is None:
# unset by the user, points to the implied internal signal
return self.field_logic.get_counter_decr_identifier(field)
else:
return self.get_value(prop_value)
# Field Next
if prop_name == "next":
prop_value = field.get_property(prop_name)
if prop_value is None:
# unset by the user, points to the implied internal signal
return self.field_logic.get_field_next_identifier(field)
return self.field_logic.get_field_combo_identifier(field, "next")
else:
return self.get_value(prop_value)
@@ -175,19 +163,31 @@ class Dereferencer:
if prop_name == "swmod":
return self.field_logic.get_swmod_identifier(field)
raise RuntimeError("Unhandled reference to: %s->%s" % (field, prop_name))
"""
TODO:
Resolves to an internal signal used in the field's logic
decrsaturate
decrthreshold
incrsaturate
incrthreshold
overflow
saturate
threshold
"""
# translate aliases
aliases = {
"saturate": "incrsaturate",
"threshold": "incrthreshold",
}
prop_name = aliases.get(prop_name, prop_name)
# Counter properties
if prop_name == 'incr':
return self.field_logic.get_counter_incr_strobe(field)
if prop_name == 'decr':
return self.field_logic.get_counter_decr_strobe(field)
if prop_name in {
'decrsaturate',
'decrthreshold',
'incrsaturate',
'incrthreshold',
'overflow',
'underflow',
}:
return self.field_logic.get_field_combo_identifier(field, prop_name)
raise RuntimeError("Unhandled reference to: %s->%s" % (field, prop_name))
def get_reg_propref_value(self, reg: RegNode, prop_name: str) -> str: