50 lines
1.8 KiB
Python
50 lines
1.8 KiB
Python
import networkx as nx
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from migen.fhdl.structure import *
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from migen.flow.actor import *
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from migen.corelogic.misc import optree
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class CompositeActor(Actor):
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def __init__(self, dfg):
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self.dfg = dfg
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# Internal unconnected endpoints become our endpoints. Determine them.
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our_endpoints = []
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for node in self.dfg:
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endpoints = set(node.endpoints)
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for u, v, d in self.dfg.in_edges([node], data=True):
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endpoints.remove(d['sink'])
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for u, v, d in self.dfg.out_edges([node], data=True):
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endpoints.remove(d['source'])
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our_endpoints += list(endpoints)
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Actor.__init__(self,
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SchedulingModel(SchedulingModel.DYNAMIC),
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endpoints=our_endpoints)
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def get_control_fragment(self):
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this = sum([get_conn_control_fragment(x[2]['source'], x[2]['sink'])
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for x in self.dfg.edges(data=True)], Fragment())
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others = sum([node.get_control_fragment() for node in self.dfg], Fragment())
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busy = Fragment([self.busy.eq(optree('|', [node.busy for node in self.dfg]))])
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return this + others + busy
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def get_process_fragment(self):
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this = sum([get_conn_process_fragment(x[2]['source'], x[2]['sink'])
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for x in self.dfg.edges(data=True)], Fragment())
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others = sum([node.get_process_fragment() for node in self.dfg], Fragment())
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return this + others
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def add_connection(dfg, source_node, sink_node, source_ep=None, sink_ep=None):
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if source_ep is None:
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source_eps = source_node.sources()
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assert(len(source_eps) == 1)
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source_ep = source_eps[0]
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if sink_ep is None:
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sink_eps = sink_node.sinks()
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assert(len(sink_eps) == 1)
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sink_ep = sink_eps[0]
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assert(isinstance(source_ep, Source))
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assert(isinstance(sink_ep, Sink))
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assert(source_ep in source_node.endpoints)
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assert(sink_ep in sink_node.endpoints)
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dfg.add_edge(source_node, sink_node, source=source_ep, sink=sink_ep)
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