bslathi19/PeakRDL-regblock
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Add support for cpuif that have write strobes

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This commit is contained in:
Alex Mykyta
2022-09-12 21:32:52 -07:00
parent 4bee895c71
commit 6e4246a2cc
14 changed files with 152 additions and 8 deletions
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38
src/peakrdl_regblock/field_logic/sw_onwrite.py
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@@ -33,14 +33,25 @@ class _OnWrite(NextStateConditional):
value = f"decoded_wr_data[{field.high}:{field.low}]"
return value
def _wr_biten(self, field: 'FieldNode') -> str:
if field.msb < field.lsb:
# Field gets bitswapped since it is in [low:high] orientation
value = f"{{<<{{decoded_wr_biten[{field.high}:{field.low}]}}}}"
else:
value = f"decoded_wr_biten[{field.high}:{field.low}]"
return value
class WriteOneSet(_OnWrite):
comment = "SW write 1 set"
onwritetype = OnWriteType.woset
def get_assignments(self, field: 'FieldNode') -> List[str]:
R = self.exp.field_logic.get_storage_identifier(field)
D = self._wr_data(field)
S = self._wr_biten(field)
return [
f"next_c = {R} | {self._wr_data(field)};",
f"next_c = {R} | ({D} & {S});",
"load_next_c = '1;",
]
@@ -50,8 +61,10 @@ class WriteOneClear(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
R = self.exp.field_logic.get_storage_identifier(field)
D = self._wr_data(field)
S = self._wr_biten(field)
return [
f"next_c = {R} & ~{self._wr_data(field)};",
f"next_c = {R} & ~({D} & {S});",
"load_next_c = '1;",
]
@@ -61,8 +74,10 @@ class WriteOneToggle(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
R = self.exp.field_logic.get_storage_identifier(field)
D = self._wr_data(field)
S = self._wr_biten(field)
return [
f"next_c = {R} ^ {self._wr_data(field)};",
f"next_c = {R} ^ ({D} & {S});",
"load_next_c = '1;",
]
@@ -72,8 +87,10 @@ class WriteZeroSet(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
R = self.exp.field_logic.get_storage_identifier(field)
D = self._wr_data(field)
S = self._wr_biten(field)
return [
f"next_c = {R} | ~{self._wr_data(field)};",
f"next_c = {R} | (~{D} & {S});",
"load_next_c = '1;",
]
@@ -83,8 +100,10 @@ class WriteZeroClear(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
R = self.exp.field_logic.get_storage_identifier(field)
D = self._wr_data(field)
S = self._wr_biten(field)
return [
f"next_c = {R} & {self._wr_data(field)};",
f"next_c = {R} & ({D} | ~{S});",
"load_next_c = '1;",
]
@@ -94,8 +113,10 @@ class WriteZeroToggle(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
R = self.exp.field_logic.get_storage_identifier(field)
D = self._wr_data(field)
S = self._wr_biten(field)
return [
f"next_c = {R} ^ ~{self._wr_data(field)};",
f"next_c = {R} ^ (~{D} & {S});",
"load_next_c = '1;",
]
@@ -124,7 +145,10 @@ class Write(_OnWrite):
onwritetype = None
def get_assignments(self, field: 'FieldNode') -> List[str]:
R = self.exp.field_logic.get_storage_identifier(field)
D = self._wr_data(field)
S = self._wr_biten(field)
return [
f"next_c = {self._wr_data(field)};",
f"next_c = ({R} & ~{S}) | ({D} & {S});",
"load_next_c = '1;",
]