Exemple #1
0
    def __init__(self, fragment_or_module, generators, clocks={"sys": 10}, vcd_name=None,
                 special_overrides={}):
        if isinstance(fragment_or_module, _Fragment):
            self.fragment = fragment_or_module
        else:
            self.fragment = fragment_or_module.get_fragment()

        mta = MemoryToArray()
        mta.transform_fragment(None, self.fragment)

        overrides = {AsyncResetSynchronizer: DummyAsyncResetSynchronizer}
        overrides.update(special_overrides)
        fs, lowered = lower_specials(overrides=overrides, specials=self.fragment.specials)
        self.fragment += fs
        self.fragment.specials -= lowered
        if self.fragment.specials:
            raise ValueError("Could not lower all specials", self.fragment.specials)

        if not isinstance(generators, dict):
            generators = {"sys": generators}
        self.generators = dict()
        self.passive_generators = set()
        for k, v in generators.items():
            if (isinstance(v, collections.Iterable)
                    and not inspect.isgenerator(v)):
                self.generators[k] = list(v)
            else:
                self.generators[k] = [v]

        clocks = collections.OrderedDict(sorted(clocks.items(),
                                                key=operator.itemgetter(0)))
        self.time = TimeManager(clocks)
        for clock in clocks.keys():
            if clock not in self.fragment.clock_domains:
                cd = ClockDomain(name=clock, reset_less=True)
                cd.clk.reset = C(self.time.clocks[clock].high)
                self.fragment.clock_domains.append(cd)

        insert_resets(self.fragment)
        # comb signals return to their reset value if nothing assigns them
        self.fragment.comb[0:0] = [s.eq(s.reset)
                                   for s in list_targets(self.fragment.comb)]
        self.evaluator = Evaluator(self.fragment.clock_domains,
                                   mta.replacements)

        if vcd_name is None:
            self.vcd = DummyVCDWriter()
        else:
            self.vcd = VCDWriter(vcd_name)

            signals = list_signals(self.fragment)
            for cd in self.fragment.clock_domains:
                signals.add(cd.clk)
                if cd.rst is not None:
                    signals.add(cd.rst)
            for memory_array in mta.replacements.values():
                signals |= set(memory_array)
            self.vcd.init(signals)
            for signal in sorted(signals, key=lambda x: x.duid):
                self.vcd.set(signal, signal.reset.value)
Exemple #2
0
    def __init__(self, fragment_or_module, generators, clocks={"sys": 10}, vcd_name=None,
                 special_overrides={}):
        if isinstance(fragment_or_module, _Fragment):
            self.fragment = fragment_or_module
        else:
            self.fragment = fragment_or_module.get_fragment()

        mta = MemoryToArray()
        mta.transform_fragment(None, self.fragment)

        overrides = {AsyncResetSynchronizer: DummyAsyncResetSynchronizer}
        overrides.update(special_overrides)
        fs, lowered = lower_specials(overrides=overrides, specials=self.fragment.specials)
        self.fragment += fs
        self.fragment.specials -= lowered
        if self.fragment.specials:
            raise ValueError("Could not lower all specials", self.fragment.specials)

        if not isinstance(generators, dict):
            generators = {"sys": generators}
        self.generators = dict()
        self.passive_generators = set()
        for k, v in generators.items():
            if (isinstance(v, collections.Iterable)
                    and not inspect.isgenerator(v)):
                self.generators[k] = list(v)
            else:
                self.generators[k] = [v]

        clocks = collections.OrderedDict(sorted(clocks.items(),
                                                key=operator.itemgetter(0)))
        self.time = TimeManager(clocks)
        for clock in clocks.keys():
            if clock not in self.fragment.clock_domains:
                cd = ClockDomain(name=clock, reset_less=True)
                cd.clk.reset = C(self.time.clocks[clock].high)
                self.fragment.clock_domains.append(cd)

        insert_resets(self.fragment)
        # comb signals return to their reset value if nothing assigns them
        self.fragment.comb[0:0] = [s.eq(s.reset)
                                   for s in list_targets(self.fragment.comb)]
        self.evaluator = Evaluator(self.fragment.clock_domains,
                                   mta.replacements)

        if vcd_name is None:
            self.vcd = DummyVCDWriter()
        else:
            self.vcd = VCDWriter(vcd_name)

            signals = list_signals(self.fragment)
            for cd in self.fragment.clock_domains:
                signals.add(cd.clk)
                if cd.rst is not None:
                    signals.add(cd.rst)
            for memory_array in mta.replacements.values():
                signals |= set(memory_array)
            for signal in sorted(signals, key=lambda x: x.duid):
                self.vcd.set(signal, signal.reset.value)
Exemple #3
0
    def __init__(self, fragment_or_module, generators, clocks={"sys": 10}, vcd_name=None):
        if isinstance(fragment_or_module, _Fragment):
            self.fragment = fragment_or_module
        else:
            self.fragment = fragment_or_module.get_fragment()

        mta = MemoryToArray()
        mta.transform_fragment(None, self.fragment)

        fs, lowered = lower_specials(overrides={}, specials=self.fragment.specials)
        self.fragment += fs
        self.fragment.specials -= lowered
        if self.fragment.specials:
            raise ValueError("Could not lower all specials", self.fragment.specials)

        if not isinstance(generators, dict):
            generators = {"sys": generators}
        self.generators = dict()
        self.passive_generators = set()
        for k, v in generators.items():
            if (isinstance(v, collections.Iterable)
                    and not inspect.isgenerator(v)):
                self.generators[k] = list(v)
            else:
                self.generators[k] = [v]

        clocks = collections.OrderedDict(sorted(clocks.items(),
                                                key=operator.itemgetter(0)))
        self.time = TimeManager(clocks)
        for clock in clocks.keys():
            if clock not in self.fragment.clock_domains:
                cd = ClockDomain(name=clock, reset_less=True)
                cd.clk.reset = C(self.time.clocks[clock].high)
                self.fragment.clock_domains.append(cd)

        insert_resets(self.fragment)
        # comb signals return to their reset value if nothing assigns them
        reset = []
        for s, slices in list_targetslices(self.fragment.comb).items():
            for l in slices:
                if l is None:
                    reset.append(s.eq(s.reset))
                else:
                    reset.append(s[l[0]:l[1]].eq(s.reset << l[0]))
        self.fragment.comb[0:0] = reset
        self.evaluator = Evaluator(self.fragment.clock_domains,
                                   mta.replacements)

        if vcd_name is None:
            self.vcd = DummyVCDWriter()
        else:
            self.vcd = VCDWriter(vcd_name)