40 lines
1018 B
Python
40 lines
1018 B
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_predicate(self, field: 'FieldNode') -> str:
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strb = self.exp.dereferencer.get_access_strobe(field)
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return f"{strb} && !decoded_req_is_wr"
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class ClearOnRead(_OnRead):
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comment = "SW clear on read"
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onreadtype = OnReadType.rclr
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def get_assignments(self, field: 'FieldNode') -> List[str]:
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return [
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"next_c = '0;",
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"load_next_c = '1;",
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]
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class SetOnRead(_OnRead):
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comment = "SW set on read"
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onreadtype = OnReadType.rset
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def get_assignments(self, field: 'FieldNode') -> List[str]:
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return [
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"next_c = '1;",
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"load_next_c = '1;",
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]
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