39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
from typing import TYPE_CHECKING, List
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from systemrdl.rdltypes import OnReadType
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from .bases import NextStateConditional
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if TYPE_CHECKING:
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from systemrdl.node import FieldNode
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class _OnRead(NextStateConditional):
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onreadtype = None
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def is_match(self, field: 'FieldNode') -> bool:
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return field.get_property("onread") == self.onreadtype
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def get_conditional(self, field: 'FieldNode') -> str:
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strb = self.exporter.dereferencer.get_access_strobe(field)
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return f"decoded_req && !decoded_req_is_wr && {strb}"
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class ClearOnRead(_OnRead):
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onreadtype = OnReadType.rclr
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def get_assignments(self, field: 'FieldNode') -> List[str]:
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field_path = self.get_field_path(field)
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return [
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f"field_combo.{field_path}.next = '0;",
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f"field_combo.{field_path}.load_next = '1;",
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]
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class SetOnRead(_OnRead):
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onreadtype = OnReadType.rset
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def get_assignments(self, field: 'FieldNode') -> List[str]:
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field_path = self.get_field_path(field)
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return [
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f"field_combo.{field_path}.next = '1;",
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f"field_combo.{field_path}.load_next = '1;",
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]
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