bslathi19/PeakRDL-regblock
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

First read/write!

Browse Source
This commit is contained in:
Alex Mykyta
2021-11-16 23:29:58 -08:00
parent d5c5d42390
commit 249fc2df7c
33 changed files with 1332 additions and 202 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
peakrdl/regblock/field_logic/sw_onwrite.py
View File

@@ -8,6 +8,7 @@ if TYPE_CHECKING:
from systemrdl.node import FieldNode
# TODO: implement sw=w1 "write once" fields
# TODO: Implement swwe/swwel masking properties
class _OnWrite(NextStateConditional):
onwritetype = None
@@ -16,7 +17,15 @@ class _OnWrite(NextStateConditional):
def get_predicate(self, field: 'FieldNode') -> str:
strb = self.exp.dereferencer.get_access_strobe(field)
return f"decoded_req && decoded_req_is_wr && {strb}"
return f"{strb} && decoded_req_is_wr"
def _wr_data(self, field: 'FieldNode') -> str:
if field.msb < field.lsb:
# Field gets bitswapped since it is in [low:high] orientation
value = f"{{<<{{decoded_wr_data[{field.high}:{field.low}]}}}}"
else:
value = f"decoded_wr_data[{field.high}:{field.low}]"
return value
class WriteOneSet(_OnWrite):
comment = "SW write 1 set"
@@ -25,7 +34,7 @@ class WriteOneSet(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
field_path = self.get_field_path(field)
return [
f"field_combo.{field_path}.next = field_storage.{field_path} | decoded_wr_data;",
f"field_combo.{field_path}.next = field_storage.{field_path} | {self._wr_data(field)}];",
f"field_combo.{field_path}.load_next = '1;",
]
@@ -36,7 +45,7 @@ class WriteOneClear(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
field_path = self.get_field_path(field)
return [
f"field_combo.{field_path}.next = field_storage.{field_path} & ~decoded_wr_data;",
f"field_combo.{field_path}.next = field_storage.{field_path} & ~{self._wr_data(field)};",
f"field_combo.{field_path}.load_next = '1;",
]
@@ -47,7 +56,7 @@ class WriteOneToggle(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
field_path = self.get_field_path(field)
return [
f"field_combo.{field_path}.next = field_storage.{field_path} ^ decoded_wr_data;",
f"field_combo.{field_path}.next = field_storage.{field_path} ^ {self._wr_data(field)};",
f"field_combo.{field_path}.load_next = '1;",
]
@@ -58,7 +67,7 @@ class WriteZeroSet(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
field_path = self.get_field_path(field)
return [
f"field_combo.{field_path}.next = field_storage.{field_path} | ~decoded_wr_data;",
f"field_combo.{field_path}.next = field_storage.{field_path} | ~{self._wr_data(field)};",
f"field_combo.{field_path}.load_next = '1;",
]
@@ -69,7 +78,7 @@ class WriteZeroClear(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
field_path = self.get_field_path(field)
return [
f"field_combo.{field_path}.next = field_storage.{field_path} & decoded_wr_data;",
f"field_combo.{field_path}.next = field_storage.{field_path} & {self._wr_data(field)};",
f"field_combo.{field_path}.load_next = '1;",
]
@@ -80,7 +89,7 @@ class WriteZeroToggle(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
field_path = self.get_field_path(field)
return [
f"field_combo.{field_path}.next = field_storage.{field_path} ^ ~decoded_wr_data;",
f"field_combo.{field_path}.next = field_storage.{field_path} ^ ~{self._wr_data(field)};",
f"field_combo.{field_path}.load_next = '1;",
]
@@ -113,6 +122,6 @@ class Write(_OnWrite):
def get_assignments(self, field: 'FieldNode') -> List[str]:
field_path = self.get_field_path(field)
return [
f"field_combo.{field_path}.next = decoded_wr_data;",
f"field_combo.{field_path}.next = {self._wr_data(field)};",
f"field_combo.{field_path}.load_next = '1;",
]